Glass Fraction Research Articles

The Volcanic-Rich Layer of the “Camporotondo (Marche, Italy)” Section: Petrography and Sedimentation of an Unknown Distal Messinian Eruption

A Messinian and lithified horizon enriched in volcanic particles with thicknesses of 170–180 cm crops in the Camporotondo (CR) section (Marche, Italy). This volcanic-rich layer (VRL) was investigated by field plus mesoscopic observations, X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), bulk composition methods and electron-microprobe analysis (EMPA). The quantitative textural features of volcanic and sedimentary components were determined by 2D image analysis. The lowermost massive 70–80 cm portion is free of sedimentary structure or characterised only by plane-parallel ones, whereas the uppermost one is undulated and cross-laminated. The XRPD and SEM outcomes unveil that the VRL of CR is mainly composed of glassy shards (≥80 area%), a variable amount of sedimentary minerals (<20 area%) and a very low content of magmatic minerals (few area%). The bulk and micro-chemical attributes of volcanic and glassy materials are rhyolitic and almost identical to previous VRLs dated at 5.5 Ma (VRL-5.5). The signatures of immobile elements and the high amount of H2O present in the glass fraction suggest a provenance from a convergent geodynamic setting. The 2D image analysis on SEM observations show that the VRL-5.5 of CR is composed of very fine and sorted (averages of MZ of 5,72 and σi of 0,70), scarcely vesicular, glass shards, with similar long and short size dimensions, shape and roundness. The VRL-5.5 of CR is free of large minerals and fossils. The coupling of mesoscopic and microscopic determinations indicates that the lowermost interval was deposited such as a primary tephra, i.e., fallout pyroclasts sinking in seawater. Instead, the uppermost interval derives from local, low-energy and sin-depositional remobilisation of the same VRL-5.5. The textural attributes of the volcanic fractions, the sedimentological features and the thickness of the VRL at CR correspond to the westward deposit of a still unknown eruption likely occurred at 5.5 Ma.

Effects of the fly ash and water glass on the mechanical properties and water stability of the high ductile magnesium phosphate cement-based composite

High ductile magnesium phosphate cement-based composites (HDMPCC) give full play to the superior performance of magnesium phosphate cement (MPC) in repair and reinforcement. However, when the MPC is cured in water or wet environment, the strength will be greatly reduced and the durability will be poor. In this paper, a series of experiments were conducted to investigate the effects of the substitution rate of fly ash (FA) and mass fraction of water glass (WG) on the mechanical properties and water stability of the HDMPCC. The main properties of the HDMPCC were examined, including the workability, compressive performance, bending performance and water stability. Finally, the effect mechanism was observed by using the Scanning Electron Microscopy (SEM). The results showed that the slump and compressive strength decreased as the FA substitution rate increased. In addition, when the FA substitution rate was 40%, the HDMPCC had the most excellent bending performance and water stability. The WG had little effect on the slump and compressive strength. However, the HDMPCC with a WG mass fraction of 5% had the best water stability, while excessive WG could reduce the fluidity of the slurry. The microscopic test results indicated that the FA and WG could improve the compactness of the HDMPCC. Moreover, the failure mode of PVA fiber at the fracture interface changed from the fracture failure to pull out damage after 7-day immersion, which improved the ductility of the specimens.

Mercury and REE contents in fruticose lichens from volcanic areas of the south volcanic zone

Volcanic eruptions represent one of the natural sources of Hg along with evasion from the oceans. This work evaluates the influence of these sources on the Hg bioaccumulation by fruticose lichens. The sampling areas were located in nearby sites affected by recent volcanic activity in the Patagonia Andean range. Geological techniques such as the study of REE and multi-element patterns were used to identify the volcanic ash sources. The relationship among Hg and semi volatile elements with the distance to the emitting points were considered. In general, the results found in the lichens were in agreement with the provenance of glass fractions from volcanic eruptions in the influenced zone. The diagrams of lichen multi-elements concentration showed similar patterns for lichens taken from locations further south (near Hudson volcano) which were different from the lichens taken from the northern area (near Puyehue, Calbuco and Copahue volcanoes). The average values of LREE/MREE showed similar values in lichen samples taken from the north and south areas from Puyehue Cordon Caulle Volcanic Complex and the ranges of the volcanic glass particles expelled during the 2011 eruption. The results suggest that normalized patterns of the REEs in fruticose lichens might provide a proxy record of the elements released from a volcanic source. Correlations of concentration of semi volatile elements to the volcanic distances and to the Pacific Ocean showed that Hg and Sb bioaccumulation in lichens had one or both contributions.

Unsaturated Polyester-Based Polymer Concrete Containing Recycled Cathode Ray Tube Glass Aggregate

Polymer concrete (PC) is a composite construction material that boasts several advantages, such as lightness, low water permeability, high resistance to corrosive environments, and chemical degradation. Consequently, it has recently attracted interest as an alternative material to the traditional ones for several civil applications. In this study, unsaturated polyester resin was considered the matrix phase of PC. Aimed to produce green PC, the commonly dispersed phase of natural aggregate was totally replaced by recycled glass aggregate (RGA) deriving from cathode ray tube (CRT) glass waste. Fine and coarse fractions of non-hazardous CRT glass were considered in different ratios. Chemical and physical analyses were carried out through XRF, particle size distribution and microstructural analysis to characterize RGA. The influence of RGA particle size and percentage on PC performance was investigated by microstructural analysis and aggregate packing, chemical resistance, water absorption, and mechanical analyses, such as bending, impact, and scratch test. Using solely the coarse fraction of RGA led to the manufacturing of a green PC with similar performance to the traditional PC and in addition lower in density. The PC quality mainly depended on the matrix crosslinking which, for PC containing fine RGA, was promoted by adding 4 wt% of silane coupling agent.

Microstructure and particle size effects on selected mechanical properties of waste glass-reinforced aluminium matrix composites

The development of new lightweight engineering materials with highly improved mechanical properties has been a thought-provoking issue of materials engineering lately. The attempt being made by the industrial and academic bodies has engendered the shift to composite materials over conventional ones. Aluminium reinforced composites are now being used in the transportation industries such as automobile and aerospace. Waste glass is a hard ceramic material which is majorly made up of silica, it is cheap, available and can serve as a replacement for costly reinforcement like silica, silicon carbide and titanium carbide. As a result, this research studied the effect of stir casting parameters (weight fraction of reinforcement and particle size) on the physical and mechanical properties of aluminium Al 6061/waste glass composites. The results obtained showed that density and fracture toughness of the samples reduced with an increase in weight fraction and particle size of waste glass. Brinell hardness improved progressively with increase in the weight fraction of waste glass and a reduction in particle size. Tensile strength improved from 0 to 8 wt% after which a reduction was noted at 10 wt% for samples reinforced with −6 µm particle size while 6 wt% reinforcement had the best tensile strength for samples reinforced with −13 µm and –23 µm particles sizes. The morphology examined showed the interfacial interaction between matrix and reinforcement in relation to mechanical properties. The study established the effectiveness of the composites as compared to the pure matrix which made them better candidate materials for various engineering applications like automobiles.

Minimally-invasive dentistry via dual-function novel bioactive low-shrinkage-stress flowable nanocomposites

The objectives of this in vitro study were to develop a novel low-shrinkage-stress flowable nanocomposite with antibacterial properties through the incorporation of dimethylaminohexadecyl methacrylate (DMAHDM) and nanoparticles of amorphous calcium phosphate (NACP), and investigate the mechanical and oral biofilm properties, to be used in minimally-invasive techniques. MethodsThe light-cured low-shrinkage-stress flowable resin was formulated by mixing urethane dimethacrylate (UDMA) and triethylene glycol divinylbenzyl ether (TEG-DVBE) at a 1:1 mass ratio. Different mass fractions of glass, and either 5% DMAHDM or 20%NACP or both were incorporated. Paste flowability, ultimate micro tensile strength and surface roughness were evaluated. The antibacterial response of DMAHDM resin was assessed by using biofilms of human saliva-derived microcosm model. Virtuoso flowable composite was used as a control. Results(45% resin+5% DMAHDM+20% NACP+30% glass) formula yielded the needed outcomes. It had flow rate within the range of ISO requirement. The micro tensile strength was (39.1 ± 4.3) MPa, similar to (40.1 ± 4.0) MPa for commercial control (p > 0.05). The surface roughness values of the novel composite (0.079 ± 0.01) µm similar to commercial composite (0.09 ± 0.02) µm (p > 0.05). Salivary microcosm biofilm colony forming unit values were reduced by 5–6 logs (p < 0.05). Biofilm metabolic activity was also substantially reduced, compared to control composite (p < 0.05). SignificanceThe novel bioactive flowable nanocomposite achieved strong antibacterial activities without compromising the mechanical properties. It is promising to be used as pit and fissure sealants, and as fillings in conservative cavities to inhibit recurrent caries and increase restoration longevity.

Production of Porous Ceramic Materials from Spent Fluorescent Lamps

Spent fluorescent lamps (SFL) are classified as hazardous materials in the European Waste Catalogue, which includes residues from various hi-tech devices. The most common end-of-life treatment of SFL consists in the recovery of rare earth elements from the phosphor powders, with associated problems in the management of the glass residues, which are usually landfilled. This study involves the manufacturing of porous ceramics from both the coarse glass-rich fraction and the phosphor-enriched fraction of spent fluorescent lamps. These porous materials, realizing the immobilization of Rare Earth Elements (REEs) within a glass matrix, are suggested for application in buildings as thermal and acoustic insulators. The proposed process is characterized by: (i) alkaline activation (2.5 M or 1 M NaOH aqueous solution); (ii) pre-curing at 75 °C; (iii) the addition of a surfactant (Triton X-100) for foaming at high-speed stirring; (iv) curing at 45 °C; (v) viscous flow sintering at 700 °C. All the final porous ceramics present a limited metal leaching and, in particular, the coarse glass fraction activated with 2.5 M NaOH solution leads to materials comparable to commercial glass foams in terms of mechanical properties.

PROPERTY EVALUATION AND COMPLIANCE LEVEL ANALYSIS OF GLASS WASTES REINFORCED CERAMIC COMPOSITES FOR MASONRY APPLICATIONS

Abstract: This study investigated the effects of various sieve fractions of waste glass (WG) on the properties of fired clay bricks in order to enhance its service efficiency for masonry. Green bricks prepared with various sieve fractions of WG were dried in air for 24 hours and later in an oven at 110 ᵒCfor 8 hours to remove moisture content and then fired in a furnace at 4 ᵒC/min until 1000 ᵒC was attained. They were left to soak for another 4 hours and allowed to cool in the furnace. Samples were tested for firing shrinkage, weight loss, apparent porosity, water absorption, bulk density, compressive strength and modulus of rupture. Property evaluation and compliance level analysis were carried out on the results obtained, to check level of compliance with existing standards. Results revealed that firing shrinkage, weight loss, apparent porosity and water absorption reduced as WG particle sizes reduced while bulk density, compressive strength and modulus of rupture increased as WG particle sizes reduced. Compliance level table shows that sieve fractions of -150+75 μm (sample C) and -75 μm (sample D) had 100% compliance with all standards used for comparison, while the control sample X (0% additive), (sample A) -850+300 μm and (sample B) -300+150 μm had 50 %, 63 % and 88 % compliance respectively. In conclusion, WG particles sizes of 150 μm and 75 μm had the optimum impact on the properties of fired clay bricks for construction purposes.

Integrated waste management system in Universitas Negeri Semarang, Indonesia

Waste has become a global problem worldwide. Universitas Negeri Semarang (UNNES) also cannot avoid this problem. Therefore, UNNES has included the sustainable waste management system in its long-term target. However, this target will not be achieved if UNNES does not take any real action. Starting this year, UNNES begin to operate integrated, independent, and sustainable waste processing to replace conventional waste processing, which only piled up the waste in the city landfill. This paper aims to describe this new waste management system of UNNES comprehensively. The study found that the system can effectively handle up to 5 tons of various waste that UNNES produces a day. The waste was sorted and classified into four categories, and different treatments processed it. Leaves and food waste were recycled into compost and black soldier fly (BSF) maggots, respectively. While plastic, bottle, and paper waste were distributed to the third party, they managed the waste. Finally, the rest of the unsegregated waste (e.g., twigs or branches, glass fraction, unrecyclable plastic) were turned into the ashes by an eco-friendly incinerator.

Performance of glass-blended cement produced by intergrinding and separate grinding methods

This study aims to investigate the grindability and performance of glass-blended cements depending on the grinding method and glass type. Two grinding methods, intergrinding and separate grinding, and two types of waste glass, liquid crystal display glass (LCDG) and soda-lime glass (SLG), were considered. To study grindability, the milling characteristics of the coarse waste glass and fine glass-blended mixtures were investigated. The four types of glass-blended cements produced by the two grinding methods and the two types of waste glass were evaluated on particle size distribution, chemical composition, heat flow of hydration, hydration behavior, strength development and mitigation in alkali–silica reaction (ASR) expansion. It was found that the intergrinding method was more cost-efficient in producing glass-blended cements than the separate grinding method. Intergrinding of the glass-blended mixtures resulted in finer cement and coarser glass fractions. The interground glass-blended cements showed faster hydration reactivity but slightly lower strength and mitigation in ASR expansion than did separately ground glass-blended cements.

Characterization and recycling potential of the discarded cathode ray tube monitors

Abundantly available discarded cathode ray tubes are a serious threat to the environment and loss to resource conservation and therefore requiring immediate recycling efforts. In this study, extensive characterization of all parts of the discarded cathode ray tube was carried out using X-ray diffraction, thermo-gravimetric, X-ray photoelectron spectroscopy, Scanning electron microscope, and Energy Dispersive Spectroscopy. The detailed mass balance and the overall potential (market value calculations) of discarded cathode tubes as an urban source, and the techno-economic calculations were carried to provide guidelines for the development of recycling technology. Recycling techniques of cathode-ray tubes were reviewed, and a concise flow sheet for overall recycling was prepared for evaluation and assessment of recycling potential. The thermal response and dissociation kinetics of the phosphor were investigated, and the activation energy in the temperature range (600–930 °C) for thermal processing of phosphor was determined as 105.4 kJ/ mol. Effective recycling of cathode ray tube phosphor can yield 4.5 g of Y, Eu and, La metal values per 500 kg of discarded units with a market value of 835 INR and an overall market value of 115,870 INR ($1567.34). The different fractions of cathode-ray tube glass were recycled using a combination of the pyrometallurgical and hydrometallurgical processes for metal recovery. Recycling of different fractions of hazardous discarded cathode ray tubes is necessary and is beneficial for a circular economy for recovery of phosphor, copper, glass and coating material, plastics, and steel.

Decoupling Microstructural and Residual Stress Effects on Glass-Ceramic Toughening

Barium disilicate (BaO.2SiO 2 = BS2) is one of the very few stoichiometric glasses that allows for accurate control of the desired microstructure via thermal treatment, making it a (scarcely studied) model system for microstructure-property studies. Here, we performed a systematic research work on the variation in hardness, elastic modulus, fracture strength, and toughness as a function of the crystalline volumetric fraction, crystal size, and residual stresses in BS2 glass-ceramics (GC). These microstructural features were independently modified; the average crystal diameter varied from 5 to 100 μm and the crystallized volumetric fraction from 0 to 68%. The internal residual stresses in the crystals, are tensile in this system . Samples with an average spherulite size above 30 µm showed spontaneously fractured crystals due to the residual stresses. The samples with 5 and 10 µm spherulites have not cracked because the spherulites have a high volume fraction of residual glass (74%) and moderate internal stresses (40-70 GPa). The fracture toughness, K IC , increased with the spherulite size and volume fraction. However, the residual glass inside the spherulites rendered crack bowing, bridging, and trapping ineffective. The variation of K IC with the crystallized volume fraction is similar for GCs with different crystal sizes. Also, a comparison with a lithium silicate glass-ceramic showing compressive residual stresses yielded similar results. These combined findings indicate that the crystallization of a tougher phase is the crucial parameter controlling fracture toughness in these materials. The results with this model material can be extended to design novel strong and tough glass-ceramics.

Evaluation of the Pozzolanic Activity of Glass Powder in Three Maximum Grain Sizes

The addition of pozzolans has a potentially important role in the cement industry since using waste from other industries has important environmental benefits, including reduced CO2 emissions from cement production. This study evaluates the pozzolanic activity of the glass powder in three different particle sizes (150 µm, 75 µm, and 45 µm, upper limits) and compares the results with those of other added pozzolans and technical standards found in the literature. Pozzolanicity was determined by four methods: Pozzolanic Activity Index (PAI) with lime, Performance Index (PI) with Portland cement, electric conductivity, and modified Chapelle. The results of the Chapelle and electrical conductivity trials indicated the pozzolanic activity of glass powder in all three particle sizes studied. The results of PAI with lime revealed pozzolanic activity of the 45 µm fraction while the performance index with cement showed the pozzolanicity of the 75 µm and 45 µm fractions according to ASTM C 618-05 (2005). It is concluded that the smallest glass fractions provided better reaction rates due to larger contact surfaces and are, therefore, considered pozzolans.

Fabrication of sustainable magnesium phosphate cement micromortar using design of experiments statistical modelling: Valorization of ceramic-stone-porcelain containing waste as filler

Magnesium phosphate cement (MPC) is a potential sustainable alternative to Portland cement. It is possible to lower the total CO2 emissions related to MPC manufacturing by using by-products and wastes as raw materials. When by-products are used to develop MPC, the resultant binder can be referred to as sustainable magnesium phosphate cement (sust-MPC). This research incorporates ceramic, stone, and porcelain waste (CSP) as a filler in sust-MPC to obtain a micromortar. Sust-MPC is formulated with KH2PO4 and low-grade MgO (LG-MgO), a by-product composed of 40–60 wt% MgO. CSP is the non-recyclable glass fraction generated by the glass recycling industry. The effect of water and CSP addition on the mechanical properties of sust-MPC was analyzed using design of experiments (DoE). A statistical model was obtained and validated by testing ideally formulated samples achieved through optimization of the DoE. The optimal formulation (15 wt% of CSP and a water to cement ratio of 0.34) was realized by maximizing the compressive strength at 7 and 28 days of curing, resulting in values of 18 and 25 MPa respectively. After one year of curing, the micromortar was physico-chemically characterized in-depth using backscattered scanning electron microscopy (BSEM-EDS) and Fourier transform infrared-attenuated total reflectance spectroscopy (FTIR-ATR). The optimal formulation showed good integration of CSP particles in the ceramic matrix. Thus, a potential reaction between silica and the K-struvite matrix may have occurred after one year of curing.

Design, Analysis and Manufacturing Polymer Fiber Reinforced Composite Helical Spring

In this work it had been focused on the possibility of replacement of steel spring in suspension system by fiber reinforced polymer composite that is responsible for light weight of spring which leads to reduces the weight of vehicle and improve fuel efficiency. This type of spring used in motor cycles, light weight vehicle. The design will be simulated by ANSYS workbench. Then, E-Glass fiber has been used to fabricate helical compression spring of 40% fiber volume fraction of glass. with polyester resin. The deflection of glass reinforced composite spring is more than steel spring but within permissible limit. weight of composite spring is reduced by 57% than of steel.

Using glass content to determine the reactivity of fly ash for thermodynamic calculations

Thermodynamic models for the hydration of ordinary portland cement (OPC) typically predict the composition of the resulting pore solution and the hydrates well. However, predictions for cementitious systems containing OPC and supplementary cementitious materials (SCM) are more challenging. The bulk chemical composition of fly ash does not sufficiently reflect the reactive portion of the material, as the crystalline components of fly ash do not generally react in cementitious systems. Thermodynamic modeling inputs using only the bulk chemical composition of fly ash overestimate the extent of both pozzolanic and hydraulic reactions. Two additional approaches are presented to overcome this limitation. In the first approach, the maximum reactive fraction of fly ash is computed by multiplying each bulk phase of the fly ash by a degree of reaction (DoR*) that is measured experimentally through calorimetric methods. In the second approach, the reactive (glass) fraction of the fly ash is determined to calculate its reactivity. In this alternative approach, the fraction of crystalline oxides measured using quantitative x-ray diffraction (QXRD) is subtracted from bulk oxide content determined using x-ray fluorescence (XRF) to establish a degree of reaction for each phase (DoRph*) to be used in the determination of the thermodynamic modeling inputs. Thermodynamic modeling predictions substantially improve by incorporating fly ash reactivity into the calculations using either the DoR* or DoRph*. The calculation of the reactive phases of fly ash using QXRD and XRF data serve as a potential alternative to the current calorimetric methods to calculate reactivity.

SPECIATION OF METALS IN SEDIMENTS FROM DAMS AND RIVERS ALONG GOLD MINING VICINITIES IN ZAMFARA STATE

Sediments samples from three dams and rivers in Zamfara State were analyzed for chemical association of the metals (Zn, Cd, Cr, Pb and Hg) using sequential extraction method to determine the amount of the heavy metals available for absorption. The concentrations were determined in four fractions. The concentration of heavy metals in the food crop (tomatoes) was also determined using atomic absorption spectrometry (AAS). The sequential extraction was carried out using (1.0 g) of powder sample weighed into a glass centrifuge (60 ml) and fractions were obtained. Comparing the way the metals were bound to the different fractions in the sediments, it showed clearly that the metals in the sediments are bound to different fractions with different strength. Cd and Cr were primarily in the carbonate bound fraction while Zn and Hg appear mainly in the residual phase. Pb was found in carbonate, exchangeable and water soluble fractions. The distribution of the five metals studied revealed their differences in mobility. From the five elements studied, Cd (14.739- 39.931%) and Pb (0.105- 9.832%) appeared to be the most readily solubilized, thus making these elements the most potentially bioavailable. This may present a real threat as Cd and Pb are transferred into the food chain from soil contaminated by these metals. Zn and Cr levels in the tomatoes, were within international standard while Cd (0.1022 mg/l), Pb (0.2104 mg/l) and Hg (1.8818 mg/l) levels were far above (0.01, 0.01 and 0.001mg/l) USEPA standard for drinking water. Two indices such as contamination

Synthesis and characterisation of high ceramic fraction brannerite (UTi2O6) glass-ceramic composites

Brannerite, UTi2O6, glass-ceramic composites have been prepared, using UO2 and TiO2 as the ceramic phase precursors. A range of cold-press and sinter samples with varying glass:ceramic ratios have been prepared under argon at 1200 °C to investigate the effect of glass content on formation of brannerite. Ceramic brannerite formed well in all compositions, even at low (10% by weight) glass fractions, with UO2 as a minor product. Three further brannerite glass-ceramics have been prepared by hot isostatic pressing to investigate the compatibility of this system to HIPing. The samples HIPed at 1200 °C form brannerite, with UO2 as a minor phase with slightly higher abundance than in the cold-press and sinter samples.

Investigation of cementitious properties of different constituents in municipal solid waste incineration bottom ash as supplementary cementitious materials

To investigate the municipal solid waste (MSW) incineration bottom ash (IBA) as a value-added building material, this study focuses on evaluating different IBA constituents (such as glass, ceramic, mineral, slag-I with low-ferrous sintered phase and slag-II with high ferrous sintered phase) to be used as supplementary cementitious materials (SCMs) and then comparing to commercial SCMs (ground-granulated blast-furnace slag-GGBS and fly ash-FA). The investigated IBA constituents were milled into powder and then used as SCMs to partially replace cement in mortars. Their influences on cement hydration were evaluated by an isothermal calorimeter and the pozzolanic activities were assessed through the modified Chapelle test. The strength development of the mortars was studied to quantify their contributions as SCMs when compared to that of GGBS and FA. The microstructure of the hydrated mortar with IBA constituents was further evaluated. The experimental results showed that, at an early age of the IBA blended cement hydration, the powdered IBA constituents contributed to an increase in heat release, which was higher than that of FA and lower than that of GGBS; and the formation of monosulphate was accelerated. After 90 days’ curing, the powdered glass and ceramic fractions derived from IBA contributed significantly to the mortar strength compared to other constituents, indicating their relatively high reactivity that was confirmed by their high consumption of portlandite in the modified Chapelle test. The samples prepared with glass and ceramic powders derived from IBA had a relatively higher efficiency strength index (ESIt,FA/GGBS) than other IBA constituents, indicating their higher potential to be used as SCM alternatives. Therefore, it is suggested that the ground ceramic and glass fractions separated from IBA can be used as SCM alternatives, which can achieve over 80% and over 93% ESI of that of FA and GGBS, respectively. Furthermore, the other fractions of IBA, namely the coarse IBA and IBA-minerals can only be used as fillers.

Fe-based metallic glass reinforced FeCoCrNiMn high entropy alloy through selective laser melting

Improving the comprehensive mechanical properties of metallic materials has attracted great attentions. Here, FeCoCrNiMn high entropy alloy composite with combined high strength and toughness was fabricated by selective laser melting. The intriguing finding is that two different high entropy phases in addition to amorphous phase were detected at the high-entropy alloy and metallic glass interfacial region. With increasing the fraction of Fe-based metallic glass, the composite exhibited enhanced strength above 1000 MPa and excellent fracture toughness over 100 MPa m1/2, demonstrating potential engineering applications. The above scenario is fundamentally understood according to the high mixing entropy and sluggish effects, as well as the little atomic size difference that facilitates the generation of new high entropy phase. The combined high strength and toughness of the composite is well understood in terms of the dispersion strengthening.