Increase In Weight Percentage Research Articles

Machinability study on Al7075/Al2O3-SiC hybrid composites

In the present research, the effects of volume fraction of SiC+Al2O3 particles and aging temperature on the machinability of stir-casted Al7075 metal matrix composites (MMC) have been investigated. The hybrid composites were fabricated using the liquid metallurgy route. Al7075 was reinforced with different wt. % of SiC (3%, 6%, and 9%) and Al2O3 (2%, 4%, and 6%) which were used to fabricate the hybrid metal matrix composites. The samples were aged at different temperatures (140 ºC, 160 ºC, and 180 ºC) for 4 h and cooled at furnace temperature (27 ºC). The machinability of hybrid metal matrix composites was studied by carrying out L27 orthogonal array experiments. Three process parameters were selected, such as 0.2 mm/min of the depth of cut, 0.1 mm/min of feed rate, and 1500 rpm of spindle speed. The obtained results indicate that the surface roughness and machining force of MMCs increase with an increase in weight percentage of Al2O3/SiC and decrease with the increase in aging temperature. Optimum machining force and surface roughness were obtained at 2% Al2O3 + 3 % SiC and 180°C of aging temperature.

Elastic Modulus Micro-Modelling of Graphene Nanoplates (GnPs) Filled Mixture of Epoxy Resin and PVDF Polymer Materials

The main objective of the present work is to develop micro-modelling of elastic modulus of graphene nanoplates (GnPs) reinforced mixture of epoxy resin and PVDF polymer materials. The weight percentage variation of graphene nanoplates are incorporated in the mixture ratio 10:1 of epoxy resin and PVDF polymer materials for the measurement of elastic modulus with the variation of weight percentage of graphene nanoplates under tension and compression. Results indicate that the elastic modulus under tension and compression increases with the increase of weight percentage of graphene nanoplates in the mixture of epoxy resin and PVDF polymer matrix due to inhancement of mechanical properties of mixed PVDF and Epoxy resin polymer matrix.

Tuning the energy bandgap and nonlinear absorption coefficients of WOx/ ZrO2 nanocomposite thin films with the role of weight and doping concentration

The structural, linear and nonlinear optical properties of PMMA/ZrO2 and PMMA/WZrO2 nanocomposites thin films were investigated. Tungstated zirconia nanoparticles were synthesized with different tungsten concentrations (3, 20 and 37% w/w) via solvothermal reflux method. To investigate the effect of weight and doping concentration, thin films with different tungsten ratio (undoped, %3, %20 and %37 W doped) were prepared and also weight percentage of the investigated samples in polymer (10 and 20 wt%) were changed for each doping ratio. The samples were examined using XRD, TEM, XPS and EDX analysis. The linear and nonlinear optical properties were studied by UV–Visible spectrophotometry and Z scan technique. The linear spectra were used to calculate the energy band gap. The fluorescence peak at 375 nm for undoped and doped ZrO2 nanocomposites are assigned to the presence of oxygen vacancies in the nanostructures. A theoretical model including one photon, two photon and free carrier absorptions and their saturations were used to analyze the experimental data. The linear absorption of all samples increased with increasing weight percentage of the films. The films which have a low tungsten ratio (%3 W) showed minimal absorption. The band gap decreased with addition of tungsten and the increasing nanoparticle weight concentration. OA Z-scan experiment results indicated that the addition of the tungsten to PMMA/ZrO2 reduced the nonlinear absorption performance.

Effect of copper reinforcement on the microstructure, macrotexture, and wear properties of a friction-surfaced Al-Cu-Mg coating

The effect of copper reinforcement weight percentage and pre-coating treatment on the microstructure, mechanical properties, macrotexture, and wear resistance of friction surfaced Al-Cu-Mg clad on AA1050 alloy was investigated in this study. The research findings indicate that when coatings are fabricated with solid solutionized (SS) rod at a constant reinforcement weight percentage, the agglomeration of copper powders is greater than when coatings are fabricated with T3 treated rod. By increasing the weight percentage of copper powder in the coatings created with an SS rod, the width and thickness of the coatings decrease and increase, respectively. Additionally, increasing the weight percentage of copper powder results in an increase in the width and thickness of coatings created with a T3 rod, respectively. By increasing the weight percentage of copper powder from 0 to 27%, the average grain size of the coating decreases from 5.4 ± 0.2 to 1.8 ± 0.2 μm in coatings created with T3 rods and from 7.9 ± 0.3 to 2.4 ± 0.3 μm in coatings created with SS rods. It was discovered that samples coated with T3 rods have a more uniform distribution of copper-rich particles. As the copper reinforcement weight percentage increases, the texture intensity of the coating created with T3 and SS rods increases. By increasing the weight percentage of copper to 27%, the wear rate in coatings created with T3 and SS rods is reduced by 76 and 74%, respectively, compared to the AA1050 substrate.

DEVELOPMENT OF POLYMER - BAMBARANUT SHELL COMPOSITE FOR STRUCTURAL BOARD APPLICATION

This paper is aimed at investigating the use of Bambaranut shell powder as reinforcing material in polymer matrix for structural board production and to investigate its effect on the physical and mechanical properties of the resulting composites. Composites were prepared with 10%, 20%, 30%, 40% and 50% by weight of Bambaranut shell of particle size 150 µm. SEM was used to analyze the internal structure of the composites. Analysis of variance was employed to investigate the influence of the addition of Bambaranut shell particle on both the mechanical and physical properties of the samples. The properties measured range as follows: water absorption ( 0.65 to 1.95 %); density (0.1044 to 0.1129 g/〖cm〗^3 ); ultimate tensile strength (20.90 to 11.76 MPa); tensile modulus (102.55 to 161.41 MPa), flexural modulus (3818.53 to 2283.70 MPa) and flexural strength (29.96 to 53.09 MPa). Results show that as percentage of Bambaranut shell particle increased from 10% to 50% there was a decrease in tensile, compressive, impact Strength and flexural modulus. Also, increase in weight percentage of Bambaranut shell particles lowered the density and raised the hardness, and water absorption of the composites. The mechanical properties showed that the composites produced can be used for structural application.

Investigations on dislocation density and strain of polyaniline withWO3nanocomposites

Polyaniline is equipped by in-situ chemical oxidative polymerization method using ammonium persulphate as an oxidizing agent. The prepared Polyaniline is doped with the nano particles of WO3 at dissimilar weight percentage. The nano-compsites are characterized using XRD and SEM. The crystallite sizes are obtainvia Debye-Scherer relation from the XRD spectra for nano-composites of different weight percentages. The crystallite sizes of nano-particles decreased with increase in weight percentage of WO3 with the PANI. The dislocation density due to the defects in the crystals of nano-composites is obtained. The dislocation density increased as wt % of WO3 in PANI increased. Further, the strain produce at the grain boundary is obtained by FWHM of the XRD spectra. The strain of nano-composites at the grain boundary increased as dislocation density increased. Strain at the grain boundary is also increased as weight percent of WO3 increased in the nano-composites of PANI. Further, the surface morphology of the nano-composites of PANI/WO3 at different weight percentages were observed using SEM. The particles are appeared granular in shape and size. The agglomeration in the sizes of the nano-composites was observed as weight percent of WO3 with PANI increased.

Weight gain and comorbidities associated with oral second-generation antipsychotics: analysis of real-world data for patients with schizophrenia or bipolar I disorder

BackgroundMany second-generation antipsychotics (SGAs) are associated with weight gain and cardiometabolic effects. Antipsychotic-associated weight gain is linked to treatment interruptions, potentially increasing risk of relapse and hospitalization. This retrospective study assessed clinically significant weight gain (CSWG), treatment interruptions, and development of cardiometabolic conditions in patients with schizophrenia (SZ) or bipolar I disorder (BD-I) following initiation of oral SGAs with moderate to high weight gain risk.MethodsPatients with no prior use of moderate to high weight gain risk oral SGAs were identified from patient-level medical/pharmacy claims and electronic medical records (January 2013–February 2020; OM1 Real-World Data Cloud). Those with ≥ 1 weight measurement in both the 12 months preceding and 3 months after SGA initiation (index date) were analyzed for continuous changes in weight, CSWG (≥ 7% and ≥ 10% increases from baseline), treatment interruptions (switches/discontinuations), and development of cardiometabolic conditions.ResultsMedian follow-up times in the SZ (n = 8174) and BD-I (n = 9142) cohorts were 153.4 and 159.4 weeks, respectively; 45.5% and 50.7% were obese at baseline. Mean (SD) percent weight increase during treatment was 3.3% (7.2) and 3.7% (7.0) for patients with SZ and BD-I, respectively, and was highest for underweight/normal weight patients (SZ: 4.8% [8.1]; BD-I: 5.5% [8.7]). More than 96% had treatment interruptions during follow-up, primarily discontinuations. CSWG and treatment interruptions occurred within a median of 13 and 14 weeks after treatment initiation, respectively. Of patients with CSWG and treatment interruptions, approximately 75% did not return to baseline weight during follow-up. Among those without baseline cardiometabolic conditions, 14.7% and 11.3% of patients with SZ or BD-I, respectively, developed ≥ 1 condition over 12 months post-index. Incidence was generally highest among those who were overweight/obese at baseline and those who experienced CSWG.ConclusionsIn this analysis of real-world data, both weight gain and treatment interruptions occurred early in treatment for patients with SZ or BD-I. Treatment-associated weight gain persisted despite switching or discontinuing index treatment. Additionally, cardiometabolic morbidity increased within 12 months of treatment initiation. Patients with SZ or BD-I are at greater risk than the general population for cardiometabolic conditions; weight gain associated with SGAs may exacerbate these health risks.

Comparative Study of Zn Loading on Advanced Functional Zeolite NaY from Bagasse Ash and Rice Husk Ash for Sustainable CO2 Adsorption with ANOVA and Factorial Design

The objectives of the research were to develop synthesis and estimation of each factor on carbon dioxide adsorption of advanced functional zeolite NaY material derived from bagasse ash and rice husk ash with different crystallization temperatures and weight percentages of zinc by the ion exchange method. The adsorbents were tested in a packed bed reactor at different temperatures and flow rates of carbon dioxide. The Minitab program was used to estimate the effects of each factor on carbon dioxide adsorption properties. The results showed that extracted silicon dioxide from bagasse ash and rice husk ash could be successfully used as raw material for zeolite NaY synthesis with a crystallization temperature of 298.15 K. The zeolite NaY crystalline structure was well-preserved after ion exchange. The highest capacity of carbon dioxide adsorption was at 10.33 mmol/g with zeolite 5B298-373-1. The results of the Minitab program showed that the carbon dioxide adsorption decreased with increasing crystallization temperature and carbon dioxide flow rate parameters. However, the increased weight percentage of zinc loading on zeolite NaY resulted in better carbon dioxide adsorption. The factors of the types of adsorbents and adsorption temperature showed interaction with each other.

Microstructure and Mechanical Properties of Aluminum Matrix Composites Reinforced With In-Situ TiB2 Particles

The present article investigates the microstructure and mechanical properties of A356 matrix composite reinforced with TiB2 particles synthesized by the salt metal reaction of as-cast and T6 state. Microscopic observations of the prepared composites reveal that in-situ grown TiB2 particles are characterized with regular shapes and nearly uniform distributed in the A356 matrix. A clear interface between the A356 matrix and TiB2 particles was observed. The detailed analysis of mechanical properties of synthesized composites of as-cast and T6 state show that the ultimate tensile strength and Young’s modulus of the synthesized composites increased with the increasing weight percentage (wt%) of in-situ TiB2 particles in the A356 matrix, but the Poisson’s ratio of the synthesized composites decreased with the increase of TiB2 particles wt%. The Young’s modulus of the composites increased by up to 10.8% and the Poisson’s ratio decreased by up to 3.2% with the increase of TiB2 particles wt%, compared to A356 alloy. With the increase of TiB2 particle wt%, the yield strength of the composites decreased at first (when the TiB2 particle wt% is less than 1%) then increased, while elongation and percent reduction in area increased at first and then decreased. Furthermore, T6 heat treatment can refine grain and effectively improve the mechanical properties of composites.

Biphasic Properties of PVAH (Polyvinyl Alcohol Hydrogel) Reflecting Biomechanical Behavior of the Nucleus Pulposus of the Human Intervertebral Disc.

PVAH is a mixture of solid and fluid, but its mechanical behavior has usually been described using solid material models. The purpose of this study was to obtain material properties that can reflect the mechanical behavior of polyvinyl alcohol hydrogel (PVAH) using finite element analysis, a biphasic continuum model, and to optimize the composition ratio of PVAH to replace the nucleus pulposus (NP) of the human intervertebral disc. Six types of PVAH specimens (3, 5, 7, 10, 15, 20 wt%) were prepared, then unconfined compression experiments were performed to acquire their material properties using the Holmes–Mow biphasic model. With an increasing weight percentage of PVA in PVAH, the Young’s modulus increased while the permeability parameter decreased. The Young’s modulus and permeability parameter were similar to those of the NP at 15 wt% and 20 wt%. The range of motion, facet joint force, and NP pressures measured from dynamic motional analysis of the lumbar segments with the NP model also exhibited similar values to those with 15~20 wt% PVAH models. Considering the structural stability and pain of the lumbar segments, it appears that 20 wt% PVAH is most suitable for replacing the NP.

Investigation on photocatalytic and structural characteristics of normal concrete using TiO2 at ambient temperature

The difference of opinion on strength-gaining due to use of Titanium dioxide (TiO2) as an additive in concrete manufacturing along with the depollution characteristics of TiO2 in normal concrete at ambient temperature is addressed in this manuscript. Different weight percentages of TiO2 (1 %, 2 %, 4 %, and 6 % of the weight of cement) are mixed with other ingredients of M20 concrete during manufacturing of specimens and tested after 7 days and 28 days of curing. The result shows slight decrease in compressive strengths with increase in weight percentage of TiO2 in the same grade of concrete raising question on the strength gain and optimum weight percentage of TiO2 for a grade of concrete. The grade of concrete for 53 grade cement available in the local market is adopted through trial and error. The loss of strength for addition of TiO2 is not significant and the specimens’ strengths greater than the characteristic strength of concrete prove it fit for use as structural material. The split tensile and flexural strength results follow the same trend of decline in strengths with increased percentage of TiO2. The cube and cylindrical specimens are tested for self-cleaning properties using Rhodamine B dye and exposure to sunlight for photocatalytic activities of the additive. Experimental results show significant improvements in the cleaning property with higher weight percentages of TiO2 due to more photocatalytic activities. In addition, due to utilization of solar photons in degradation of pollutants, the additive is proved to be effective in using alternate energy sources and energy efficient in reducing environmental pollution.

Tribological Behaviors Analysis of Synthesized Chromel Composite

This paper makes an investigation on the synthesis of tantalum carbide (TaCx) based chromel composites and their tribological behaviour using pin on disc under various load conditions. The reinforced chromel alloy with TaCx was prepared at the rate of 0, 3 and 6 wt.% of TaC using stir casting route. The wear resistance of composites was found to improve with the increase in weight percentage of TaC. The wear properties of Chromel-TaCx composite were enhanced due to the presence of 6% TaC. The wear worn out surface of chromel composite was studied through microstructures. The optimal process factors and their effect on responses have been analyzed through Response Surface Methodology (RSM) and Analysis of Variance (ANOVA).

Study on microstructure characterization of fracture frontier of post welds heat treatment and type IV cracking of P92 steel welded joint

In the research work presented in this study microstructure evolution at fracture frontier of crept P92 weld, creep rupture life and effect of creep exposure time on microstructure evolution in fine-grained heat affected zone were performed. Microstructure evolution and creep rupture behavior of metal arc welded joint of P92 steel plate in the as-welded have been studied. The different states of post weld heat treatment (PWHT). (i). post welded heat treatment at 760 o C for the 2h (ii). re-austenitizing at 1040 o C for 60 min and air cooled and tempering at 760 o C for 2h. In PWHT condition, most common type IV cracking was observed creep exposure 620 o C / 150 MPa. The martensitic matrix fracture is also observed in PWNT 1 condition. A move away from the fracture frontier, the cavities still remain in the microstructure while the martensitic matrix fracture is difficult to observe. The line mapping also confirmed the increase in weight percentage of Cr and Mo in M 23 C 6 . The elemental mapping of PWHT 2 condition is also carried out in FGHAZ which confirm the formation of Mo and Cr-rich M 23 C 6 precipitates.

Investigation on Mechanical Properties of Al5052/BN Metal Matrix Composite

The paper aims to find the Mechanical properties of HNT and Boron Nitride, reinforced with Aluminium hybrid metal matrix composites. The aluminum matrix material are reinforced with different weight percentage of HNT(3%,5%,7%) and BN(2%,3%,4%).The hybrid matrix are fabricated through sir casting technique.The mechanical Properties of like hardness, tensile, impact and micro structure of the composites are examined. The hardness and tensile of the composite are increased with increase in weight percentage of boron nitride and HNT. Also the microstructure of the composites shows the clear distribution of the composites and XRD pattern shows the presence of reinforcement in the composites. The hardness and tensile strength increases when 7% of HNT and 4% of boron nitride are added towards the base materials.

Novel nanocomposite polylactic acid films with Curcumin-ZnO: structural, thermal, optical and antibacterial properties

In this work, biodegradable polylactic acid (PLA)/Curcumin/ZnO nanocomposite films were prepared by using the film casting method at room temperature. Zinc Oxide nanoparticles (NPs) were prepared in a green method using Bambusa arundinacea leaves extract. Scanning electron microscopy results showed that curcumin and ZnO NPs were uniformly dispersed in the PLA matrix. X-ray diffraction analysis showed that addition of curcumin converts semi-crystalline PLA into amorphous. The photoluminescence spectra of PLA/Curcumin showed a broad emission band in green color. After adding ZnO NPs, the spectra showed a redshift in the emission peak with a gradual decrease in the intensity with increasing weight percentage. The energy band gap values are calculated by Tauc's plot for all PLA nanocomposite films. The antibacterial activity was not observed in pure PLA film whereas the PLA nanocomposite films exhibited antibacterial activity against both gram -ve and gram ​+ ​ve bacteria. The antibacterial activity was increased by incorporating the curcumin and ZnO NPs concentrations. The present study provides a simple procedure to prepare large-area PLA nanocomposite films with good antibacterial activity.

Synthesis and characterization of Fe2O3 nanoparticles incorporated PVA nanocompositefilms

Polyvinyl alcohol–iron oxide nanocomposite (PVA-Fe2O3 NC) films have been formed when iron oxide nanoparticles (Fe2O3 NPs) are incorporated into a polyvinyl alcohol (PVA) base matrix. In this study, for the preparation of a series of PVA-Fe2O3 NC films, different weight percentages (0, 2, 4, 6, and 8 wt. %) of Fe2O3 NPs have been added into the PVA solution using the solution cast method. The morphological and spectroscopic properties of the PVA-Fe2O3 NC films have been studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet-visible spectrophotometry (UV-Vis) spectroscopy techniques. XRD studies reveal that the original structure of the Fe2O3 NPs is preserved in the PVA-Fe2O3 NC films, and the crystallinity of the PVA-Fe2O3NC films has been increased. The SEM images confirm that the Fe2O3 NPs have been homogeneously distributed in 3-dimension with dots and rod-like structures. The UV-visible investigations have been carried out for the series of PVA-Fe2O3 NC films, which result in a significant change in opto-electronic properties. With an increasing weight percentage of Fe2O3 NPs in the PVA-Fe2O3 NC films, the direct bandgap decreased from 5.39 eV to 5.01 eV, the indirect bandgap decreased from 4.73 eV to 3.27 eV, the Urbach energy increased from 0.428 eV to 0.538 eV, the linear refractive index increased from 1.63 to 5.86, and the extinction coefficient increased from 1.86 X 10-6 to 1.74 X 10-5. These results have shown that the spectroscopic properties of PVA-Fe2O3 NC films are modified considerably with the small addition of Fe2O3 NPs in the PVA matrix, which are useful for optoelectronic applications.

Mechanical and Wear Behaviour of Nano‐Fly Ash Particle‐Reinforced Mg Metal Matrix Composites Fabricated by Stir Casting Technique

In recent years, magnesium‐based alloys and composites have great attention in automobile, structural, and biomedical industries due to their desirable characteristics such as lower density, low elastic modulus, high specific strength, better damping properties, and excellent castability. The pure magnesium was used as a matrix material and reinforced with fly ash fillers of different compositions with a weight percentage of 2.5%, 5%, and 7.5% to compare with the pure magnesium. The three different weights (wt%) of fly ash/Mg samples were prepared using the bottom pouring stir casting method. Fabricated samples sliding wear characteristics and mechanical behaviour (ASTM standard) were studied. Wear, tensile, and hardness results portray that 7.5 wt% fly ash composites possess better elongation and hardness and good wear resistance. The tensile strength values were improved by 42% in sample 4 compared with pure Mg. Hardness values were also improved by 21% in sample 4 compared with pure Mg. The wear rate and coefficient of friction are also reduced by the increased weight percentage of fly ash reinforcement. SEM images display casted pure magnesium’s morphology and wear‐tested samples’ worn surface characteristics.

Mechanical and tribological behavior of flyash, red mud and mica particles reinforced Al7075 alloy hybrid metal composites

In the present research Al7075 alloy with 1, 3 and 5 varying weight percentages of flyash, 1, 2 and 3 varying wt.% of red mud along with constant 4 wt.% of mica particles composites were synthesized by stir casting technique. Thus prepared Al7075 alloy composites were subjected to the microstructural characterization using SEM and EDS. Mechanical properties were evaluated to know the impact of multi micro particles addition on the hardness, ultimate strength, yield strength, and ductility behavior of Al7075 alloy composites. Further, wear behavior of the prepared Al7075 alloy with mica, flyash and redmud composites were experimented using pin-on-disc apparatus by varying normal load and sliding velocity at constant 3000 m sliding distance. The improved mechanical properties were observed with the addition of micro scaled flyash, redmud and mica particles, further improvement was attained with the increasing weight percentage of flyash and red mud in the Al7075 matrix alloy. However, there was decrease in the ductility of the composites with an incorporation of hard micro particles in the soft Al matrix. Fractography and worn surface analysis were carried out to know the influence of micro particles on the tensile failure and wear surfaces of the composites.

Fabrication and tribological behavior of novel UHMWPE/vitamin-C/graphene nanoplatelets based hybrid composite for joint replacement

PurposeThis study aims to fabricate and investigate the tribological performance of ultra-high molecular weight polyethylene (UHMWPE)-based composite materials reinforced with 0.5, 1 and 2 weight percentage of graphene nanoplatelets (GNPs) while keeping the weight percentage of vitamin C constant at 2% for each composite.Design/methodology/approachIn this paper, the composites were fabricated using hot pressing, and the dispersion of GNP/vitamin C/UHMWPE hybrid composite was investigated by X-ray diffraction. Experimental trials were performed according to ASTM F732 on a reciprocating sliding tribometer (pin-on-disc) at human body temperature of 37 ± 1 °C, for a load of 52 N, to assess the role of these fillers on the tribological properties of UHMWPE against Ti6Al4V counter body material under dry and lubricating (human serum) environment.FindingsIn this study, it has been observed that friction and wear behavior of the developed composites improve with increase in weight percentage of GNP, and human serum adheres to the surface of the composite pins upon sliding, resulting in the formation of a film, which results in better wear resistance of the composite pins under human serum lubrication than dry sliding. Scanning electron microscope was used to investigate the worn surface morphological examination of the composite materials. Specific wear rate of 0.76 × 10−7 mm3/Nm was attained for 2 Wt.% GNP-filled composite under human serum lubrication.Practical implicationsThe results indicate the compatibility of the composite material used in this study and suggested the in vitro implant application.Originality/valueThe presented work includes novel study of synergistic effect of GNP (which acts as a solid lubricant) and vitamin C (added as an antioxidant) on the tribological performance of UHMWPE under dry and human serum lubrication.

The investigation of the effect of nano particles on dry sliding wear and corrosion behavior of Al-Mg/Al2O3 composites

Aluminum matrix composites were extensively used as structural material as it possesses good surface properties such as wear and corrosion resistance. The practical importance of nano particles in composite materials has triggered widespread attention towards the enhancement of its properties. In this study, Al-Mg/Al2O3 (0–8 wt%) metal matrix nano composites fabricated by two step stir casting route was investigated to comprehend its wear and corrosion behaviour. The Pin-on-Disc dry sliding wear test was performed on Al-Mg/Al2O3 (0–8 wt%) by adopting Design of Experiments under the action of different contact loads and sliding distance following the ASTM G99 Standard. The experimental results conveyed that specific wear rate decreases with increase in sliding distance. Statistical analysis was performed by Taguchi’s Technique and Analysis of Variance (ANOVA) to determine the most dominating factor that influences specific wear rate for the optimum weight percentage of reinforcement. Analysis revealed adequacy with the constructed model in predicting the wear behavior of composite and unreinforced Al-Mg alloy. The corrosion behaviour of the base alloy and composites was analysed by static immersion and electrochemical assessments, by immersing prepared specimens in aqueous sodium chloride (3.5%) solution. The dependance of corrosion rate of the composites with the weight percentage of Al2O3, exposure duration and temperature of the corrosive medium was studied in detail. Corrosion test results exhibit that corrosion rate decreases with increase in weight percentage of Al2O3 particles and exposure duration, whereas it follows reverse trend with increase in corrosion medium temperature.