Potassium Tetrafluoroborate Research Articles

Three‐Dimensional (3D) Fluoride Molecular Glue to Improve the SnO2/Perovskite Interface for Efficient Perovskite Solar Cells

AbstractAiming at numerous defects at SnO2/perovskite interface and lattice mismatch in perovskite solar cells (PSCs), we design a kind of three‐dimensional (3D) molecular glue (KBF4‐TFMSA), which is derived from strong intramolecular hydrogen bonding interaction between potassium tetrafluoroborate (KBF4) and trifluoromethane‐sulfonamide (TFMSA). A remarkable efficiency of 25.8 % with negligible hysteresis and a stabilized power output of 25.0 % have been achieved, in addition, 24.57 % certified efficiency of 1 cm2 device is also obtained. Further investigation reveals that this KBF4‐TFMSA can interact with oxygen vacancies and under‐coordinated Sn(IV) from the SnO2, in the meantime, FA+ (NH2−C=NH2+) and K+ cations can be well fixed by hydrogen bonding interaction between FA+ and BF4−, and electrostatic attraction between sulfonyl oxygen and K+ ions, respectively. Thereby, FAPbI3 crystal grain sizes are increased, interfacial defects are significantly reduced while carrier extraction/ transportation is facilitated, leading to better cell performance and excellent stabilities. Non‐encapsulated devices can maintain 91 % of their initial efficiency under maximum‐power‐point (MPP) tracking while continuous illumination (~100 mW cm−2) for 1000 h, and retain 91 % of the initial efficiency after 1000 h “double 60” damp‐heat stability testing (60 °C and 60 %RH (RH, relatively humidity)).

Three-Dimensional (3D) Fluoride Molecular Glue to Improve the SnO2/Perovskite Interface for Efficient Perovskite Solar Cells.

Aiming at numerous defects at SnO2/perovskite interface and lattice mismatch in perovskite solar cells (PSCs), we design a kind of three-dimensional (3D) molecular glue (KBF4-TFMSA), which is derived from strong intramolecular hydrogen bonding interaction between potassium tetrafluoroborate (KBF4) and trifluoromethane-sulfonamide (TFMSA). A remarkable efficiency of 25.8 % with negligible hysteresis and a stabilized power output of 25.0 % have been achieved, in addition, 24.57 % certified efficiency of 1 cm2 device is also obtained. Further investigation reveals that this KBF4-TFMSA can interact with oxygen vacancies and under-coordinated Sn(IV) from the SnO2, in the meantime, FA+ (NH2-C=NH2 +) and K+ cations can be well fixed by hydrogen bonding interaction between FA+ and BF4 -, and electrostatic attraction between sulfonyl oxygen and K+ ions, respectively. Thereby, FAPbI3 crystal grain sizes are increased, interfacial defects are significantly reduced while carrier extraction/ transportation is facilitated, leading to better cell performance and excellent stabilities. Non-encapsulated devices can maintain 91 % of their initial efficiency under maximum-power-point (MPP) tracking while continuous illumination (~100 mW cm-2) for 1000 h, and retain 91 % of the initial efficiency after 1000 h "double 60" damp-heat stability testing (60 °C and 60 %RH (RH, relatively humidity)).

Controlled Release of Diborane from Alkali Metal Borohydride using Ionic Liquid-Based Lewis Acids.

Alkali metal borohydrides present a rich source of energy dense materials of boron and hydrogen, however their potential in propellants has been hitherto untapped. Potassium borohydride is a promising fuel with high gravimetric energy density and relatively low sensitivity to air and moisture. Problems arise due to the dehydrogenation of the borohydride on heating with minimal energy release. Common methods to extract both boron and hydrogen by means of borane species involve direct reaction of boron trifluoride species with alkali borohydrides. However, these methods face storage and safety issues due to rapid release of diborane on mixing the reactants. We propose a method of diborane release through controlled release of boron trifluoride by means of a tetrafluoroborate based ionic liquid. The trifluoride is released from the ionic liquid at elevated temperatures and enables safe mixture of the reactants at room temperature. It was found that the reaction between borohydride and boron trifluoride proceeds well above room temperature with potassium borohydride releasing diborane and potassium fluoride. The reaction pathway shows a primary reaction releasing diborane and potassium fluoride and a second less energy efficient step leading to the formation of potassium tetrafluoroborate. A 3D printed propellant formulation was also tested.

Controlled Release of Diborane from Alkali Metal Borohydride using Ionic Liquid‐Based Lewis Acids

AbstractAlkali metal borohydrides present a rich source of energy dense materials of boron and hydrogen, however their potential in propellants has been hitherto untapped. Potassium borohydride is a promising fuel with high gravimetric energy density and relatively low sensitivity to air and moisture. Problems arise due to the dehydrogenation of the borohydride on heating with minimal energy release. Common methods to extract both boron and hydrogen by means of borane species involve direct reaction of boron trifluoride species with alkali borohydrides. However, these methods face storage and safety issues due to rapid release of diborane on mixing the reactants. We propose a method of diborane release through controlled release of boron trifluoride by means of a tetrafluoroborate based ionic liquid. The trifluoride is released from the ionic liquid at elevated temperatures and enables safe mixture of the reactants at room temperature. It was found that the reaction between borohydride and boron trifluoride proceeds well above room temperature with potassium borohydride releasing diborane and potassium fluoride. The reaction pathway shows a primary reaction releasing diborane and potassium fluoride and a second less energy efficient step leading to the formation of potassium tetrafluoroborate. A 3D printed propellant formulation was also tested.

The Effects of Boron-Containing Compounds against Monilinia fructigena Mycelium Growth

Monilinia fructigena is the causative agent of brown rot in pome fruits, contributing to substantial economic losses, especially in storage facilities. The effects of boron-containing compounds have been considered as an environmentally friendly alternative to fungicides. The objective of the study was to determine suitable boron-containing compounds for inhibiting the mycelium growth of M. fructigena. Eight different compounds with pH adjusted to neutral (pH 7) and non-neutral were tested with concentrations of 0 (untreated control), 5, 10, 20, 40, 60, 80, and 100 mM in vitro conditions. The mycelium growth of the pathogen was totally inhibited with the application of 20 mM of potassium tetrafluoroborate and 10 mM of sodium tetrafluoroborate. The tested concentrations of ammonium pentaborate tetrahydrate, antidot-67, sodium metaborate, and sodium tetraborate decahydrate were not sufficiently effective in inhibiting the mycelium growth of M. fructigena, but the experiment of higher concentrations of them could be utility against the pathogen. The pH of boron-containing compounds was crucial in improving the efficacy of compounds, and the non-neutral compounds showed better results against to inhibition of M. fructigena mycelium growth. The results showed that boron-containing compounds may be pathogen-specific and that the activity of these compounds is related to pH.

Radiance and burning properties of KBF4 in boron-based spectral matched infrared pyrolant

Increasing the selective radiation of boron-based spectral matched pyrolant in the far infrared band (8–14 μm) can make the radiation spectrum of the infrared decoy agent close to the real target. In this study, by designing BF bonds to be generated the spectral efficiency in 8–14 μm of boron-based spectrum-matched infrared decoy was improved. Potassium tetrafluoroborate (KBF4) was used as a fluorine oxidizer in this experiment. The results show that different proportions of KBF4/B/KNO3 produce characteristic radiation peaks at 5 μm and 9 μm, which are provided by boron-containing compositions. And the near, middle and far infrared color ratio of the pyrotechnic composition is about 1.4/1/0.4. By comparing with the radiation spectrum of boron-based pyrotechnics containing polytetrafluoroethylene (PTFE), it is confirmed that BF bonds can be provided from KBF4 and emit characteristic radiation at 9 μm. Combined with TG-DTA, SEM-EDS analysis and REAL theoretical calculation results, a qualitative combustion model of KBF4/B/KNO3 system, which provides infrared radiation characteristics substances (FBO, BF3, etc.), was established. This paper explores the potential of KBF4 to introduce pyrotechnics as a key component of spectrum-matched infrared decoy.

Revisiting Solid-Solid Phase Transitions in Sodium and Potassium Tetrafluoroborate for Thermal Energy Storage.

In situ synchrotron powder X-ray diffraction (PXRD) study was conducted on sodium and potassium tetrafluoroborate (NaBF4 and KBF4) to elucidate structural changes across solid-solid phase transitions over multiple heating-cooling cycles. The phase transition temperatures from diffraction measurements are consistent with the differential scanning calorimetry data (∼240 °C for NaBF4 and ∼290 °C for KBF4). The crystal structure of the high-temperature (HT) NaBF4 phase was determined from synchrotron PXRD data. The HT disordered phase of NaBF4 crystallizes in the hexagonal, space group P63/mmc (no. 194) with a = 4.98936(2) Å, c = 7.73464(4) Å, V = 166.748(2) Å3, and Z = 2 at 250 °C. Density functional theory molecular dynamics (MD) calculations imply that the P63/mmc is indeed a stable structure for rotational NaBF4. MD simulations reproduce the experimental phase sequence upon heating and indicate that F atoms are markedly more mobile than K and B atoms in the disordered state. Thermal expansion coefficients for both phases were determined from high-precision lattice parameters at elevated temperatures, as obtained from Rietveld refinement of the PXRD data. Interestingly, for the HT-phase of NaBF4, the structure (upon heating) contracts slightly in the a-b plane but expands in the c direction such that overall thermal expansion is positive. Thermal conductivities at room temperature were measured, and the values are 0.8-1.0 W m-1 K-1 for NaBF4 and 0.55-0.65 W m-1 K-1 for KBF4. The thermal conductivity and diffusivity showed a gradual decrease up to the transition temperature and then rose slightly. Both materials show good thermal and structural stabilities over multiple heating/cooling cycles.

Niobium Boronizing: Influence of the Treatment Temperature and Time

Abstract The application of niobium borides to components such as lamination cylinders, hightemperature devices, and medical equipment shows their importance and versatility in engineering. To improve niobium’s mechanical resistance and possible oxidation resistance at temperature, this research applied boronizing to pure niobium, carried out with double pack cementation. Boronizing at 950°C and 1,100°C was carried out for 1 and 4 h. Ekabor commercial pack mixture with a nominal chemical composition of 90 % silicon carbide, 5 % boron carbide, and 5 % potassium tetrafluoroborate was used with and without 10 percent by weight (wt%) silicon addition. Scanning electron microscope, energy dispersive spectroscopy, and X-ray diffraction analyses and microhardness tests were used to characterize the treated samples. A continuous high-hardness 2,394-HV0.1 (23.5 GPa) niobium diboride layer was formed at the surface of the niobium substrate. A maximum layer thickness of 53.6 ± 2.9 µm was measured after 4 h at 1,100°C, whereas after 1 h at 950°C, no visible layer was identified with the applied characterization techniques, suggesting a threshold in this temperature. Adding 10 wt% silicon to the pack mixture impacted the kinetics of the diffusion process, which resulted in an increase in layer thickness of 72.6 ± 10.1 µm after processing for 1 h at 1,100°C, but cracks formed in the processed surface.

Modulating phase distribution and passivating surface defects of quasi-2D perovskites via potassium tetrafluoroborate for light-emitting diodes

Quasi-two-dimensional (quasi-2D) perovskites show high potential for perovskite LEDs (PeLEDs) due to a bit larger exciton binding energy and favorable energy transfer as a result of the natural quantum well structure. However, various-n phases and a large number of surface defects within the quasi-2D perovskites generally result in unfavorable energy transfer and serious nonradiative recombination during the electroluminescence (EL) of PeLEDs. Herein, potassium tetrafluoroborate (KBF4) is applied to fine modulate the phase distribution and simultaneously reduce the defect density of quasi-2D perovskites. The results reveal that the introduction of BF4- ions into the quasi-2D perovskites substantially suppresses the nucleation of small-n phases and induces the nucleation of intermediate-n phases to realize an effective cascade carrier transfer, which could accelerate the carrier transfer from small-n phases to high-n phases within the quasi-2D perovskites. Meanwhile, BF4- ions could also fill the Br- anion vacancies of the quasi-2D perovskites to diminish the nonradiative recombination. Consequently, the PeLED shows the maximum external quantum efficiency (EQE) of 13.92% with a high luminance of 19882 cd m−2. This work provides a new avenue to manipulate the phase distribution and defect passivation of quasi-2D perovskites for high-performance PeLEDs.

Dual Effect of Superhalogen Ionic Liquids Ensures Efficient Carrier Transport for Highly Efficient and Stable Perovskite Solar Cells.

Defect accumulation and nonradiative recombination at the interface of the electron-transport layer (ETL) and the photosensitive layer are inevitable obstacles to efficient and stable perovskite solar cells (PSCs). Herein, we reported a dual-effect interface modification strategy that employs potassium tetrafluoroborate (KBF4) molecules for the simultaneous passivation of the SnO2/perovskite interface and perovskite grain boundaries. The introduced highly electronegative BF4- enriched at the SnO2 surface and the chemical bond interaction between them can effectively reduce the hydroxyl (-OH) group defects on the surface of SnO2, improve electron mobility, and reduce nonradiative recombination. Meanwhile, partial K+ diffuses into the grain boundaries, causing the halogen ions to be uniformly distributed in the perovskite film and resulting in better crystallinity. Therefore, the performance of the experimental device was improved from 20.34 to 22.90% compared with the reference device, with a high electrical performance (JSC = 25.1 mA cm-2, VOC = 1.137 V). In particular, the unencapsulated target PSCs retained 85% of their original PCE after aging for 1000 h under ambient conditions (70 ± 10% RH) in the dark.

Флюстік қоспалардың алюминий боридтерінің алюминотермиялық синтезіне әсері

In the article, the influence of fluxing additives on the kinetics of the process and the yield of the alloy is investigated. It has been proven that the use of fluoride salts, in particular CaF2, in an amount from 15.0 to 18.0% contributes to an increase in the burning rate of the charge, the formation of mobile liquid slags that improve phase separation; at 6.7-8.0%, the maximum yield of the alloy occurs. The features of the use of fluxing additives in aluminothermic processes, the dependences of the charge burning rate based on the B2O3-Al system on the amount of flux were determined. The choice of a flux and the determination of its optimal amount, which provides the necessary physicochemical properties of the slag melt, which contributes to the formation of an ingot of aluminum borides, more complete phase separation, were carried out, experiments were carried out using: calcium oxide, fluorspar, potassium chlorides, potassium tetrafluoroborate in various combinations. The effectiveness of using potassium tetrafluoroborate as a fluxing additive mixed with fluorspar to increase the yield of the alloy and increase the boron content in it is analyzed.

Investigation on Inorganic Salts K2TiF6 and KBF4 to Develop Nanoparticles Based TiB2 Reinforcement Aluminium Composites.

In the current research, AA6082 aluminium alloy matrix composites (AAMCs) incorporated with various weight fractions of titanium diboride (0, 3, 6, and 9 wt%) were prepared via an in situ casting technique. The exothermic reaction between inorganic powders like dipotassium hexafluorotitanate (K2TiF6) and potassium tetrafluoroborate (KBF4) in molten Al metal contributes to the development of titanium diboride content. The manufactured AA6082-TiB2 AAMCs were evaluated using a scanning electron microscope (SEM) and X-ray diffraction (XRD). The mechanical properties and wear rate (WR) of the AAMCs were investigated. XRD guarantees the creation of TiB2 phases and proves the nonappearance of reaction products in the AMCs. SEM studies depict the even dispersion of TiB2 in the matrix alloy. The mechanical and tribological properties (MTP) of the AAMCs showed improvement by the dispersion of TiB2 particles. The WR decreases steadily with TiB2 and the least WR is seen at nine weight concentrations of TiB2/AA6082 AAMCs. Fabricated composites revealed 47.9% higher flexural strength and 14.2% superior compression strength than the base AA6082 alloy.

Technology development for obtaining titaniumcontaining bar ligature for aluminum alloy modification

The paper provides the results of experimental studies on the development of a method for obtaining titanium-containing bar ligature, the study of its structure and modifying ability. The distinctive features of the new technology are the use of titanium sponge and/or titanium shavings as titanium raw materials, the primary alloying of aluminum with titanium, and then boron, titanium introduction in two stages: initially, 2/3 of titanium metal raw materials are dissolved in the aluminum melt, and the remaining amount is introduced after the potassium tetrafluoroborate reduction. Titanium sponge pre-impregnation with halide-containing flux and the use of a briquetted KBF4 + Al-powder mixture are also provided. The experimental technology for Al–Ti–B melt preparation is described, titanium and boron extraction into the ligature is calculated, ligature microstructure is investigated, and chemical and molecular compositions of resulting slags are determined. Deformation processing for bar ligature production was carried out by the method of direct extrolling that smoothed over cast structure defects. It was found that the use of high-speed crystallization-deformation in the combined direct extrolling process makes it possible to obtain alloying bars of a given diameter at minimal energy consumption with the required set of mechanical and operational properties. A quantitative modifying ability assessment of the experimental cast-iron ligature and the deformed cast-iron rod obtained by the direct extrolling method was carried out in comparison with the mass-produced cast-iron ligature produced by KBM Affilips (the Netherlands/Belgium). Based on theoretical and experimental studies, the composition and technology for producing Al–Ti–B modifying ligature using titanium sponge and/or shavings and potassium tetrafluoroborate containing 3.0±0.3 % titanium and 1.0±0.2 % boron as alloying additives have been developed that meet the aluminum ligature composition requirements.

Analyzing the Cooling Rate and Its Effect on Distribution of Pattern and Size of the Titanium Diboride Particles Formed

In this work, we synthesize Al/TiB2 metal matrix composites (MMC) based on the effect of cooling rate in the melt while pouring into the permanent mold condition. The objective of this paper is to achieve the desired distribution pattern and increased TiB2 particles’ size in the Al/TiB2 MMC ingot. Two halide salts, viz., potassium hexafluorotitanate (K2TiF6) and potassium tetrafluoroborate (KBF4), are procured and measured. The two salts were mixed with the aluminium melt in the crucible, and it is stirred manually with help of a graphite rod. Because of the exothermic reaction, the melt reacts very quickly and that is what dropped the salts slowly. The salt particles were synthesized because of the exothermic reaction, and it will allow the particles to grow. The size and distribution of particles differ at different place in the MMC. An FEA tool ProCAST was used to analyze the cooling rate of the melt, and SEM is used to study the microstructure of the ingot at different places. The microstructures helped to identify the size of reinforcement in the MMC. The TiB2 particles are distributed more at this location at 810°C, and the TiB2 particles formed various clusters in this zone as 70%–80%. Also, the tribological characteristics are analyzed with the help of the results.

Effect of salt spray parameters on TiC reinforced aluminium based in-situ metal matrix composites

This paper aims attention at characteristics of corrosion of reinforced primary and secondary processed Al6061 based composites along TiC particles. Using potassium hexaflourotitanate (K2TiF6) and potassium tetrafluoroborate (KB4) halide salts, the synthesis of composites was done utilizing in-situ technique using stir casting route at temperature 850° Celsius. Open die forging was subjected upon in-situ composites of cast aluminium alloy at a temperature 500 °C. Both microstructure studies and salt spray test were subjected upon to forged and cast alloy 6061 and its in-situ composites. In accordance to ASTM B117 standard test procedure, salt spray test was conducted utilizing 5% NaCl test solution. The results impart that, the alloy forged, and respective in-situ composites exhibited enhanced corrosion resistance comparatively.

Activated potassium ions as CO2 carriers for PEBAX-5513/KBF4 composite membranes

This study showed that potassium tetrafluoroborate (KBF4) could be used as a carrier to facilitate the transport of CO2. A polymer electrolyte membrane was prepared by incorporating KBF4 into poly (ether-block-amide) (PEBAX-5513) with a flexible PE group. The prepared PEBAX-5513/KBF4 electrolyte membrane exhibited CO2 separation performance that was improved by nine times compared to pure PEBAX-5513 and by about seven times compared to a PVP/KF electrolyte membrane. The membrane exhibited a selectivity of 27.9. This improved separation performance increased the transport of CO2 owing to the reversible interaction of the dissociated potassium ions with CO2 molecules. The dissociation of potassium ions upon thermal treatment of the material was confirmed by Fourier transform Raman spectroscopy, and the selective layer in which the separation mechanism was generated was confirmed by scanning electron microscopy.

On the wear behavior of AA6061 alloy and in-situ AA6061-TiB2 composite subjected to Equal Channel Angular Pressing

This paper reports the effect of annealing and Equal Channel Angular Pressing (ECAP) on the wear behavior of AA6061 alloy and in situ AA6061-5 wt.%TiB2 composite. The in situ AA6061-5 wt.%TiB2 composite was prepared through aluminothermic reduction reaction process using potassium hexafluorotitanate (K2TiF6) and potassium tetrafluoroborate (KBF4) salts as precursors in an AA6061 alloy melt. The in situ AA6061-5 wt.%TiB2 composite and AA6061 alloy were subjected to annealing followed by the ECAP process to refine the grain structure. The wear test was carried out on both the materials (AA6061 alloy and in situ AA6061-5 wt.%TiB2 composite) in annealed and ECAP processed conditions using steel as a counter face material. The wear testing was carried out for different wear process parameters like load (20, 30 and 40 N), sliding velocity (0.5, 1, and 1.5 m s−1) and test temperature (25 °C, 100 °C and 200 °C). The ECAP processed AA6061 alloy displayed superior wear resistance than the ECAP processed AA6061-5 wt.%TiB2 composite. The AA6061 alloy subjected to 6 passes exhibited the highest wear resistance at room temperature (25 °C) for the applied load 30 N with a sliding velocity of 0.5 m s−1. Shallow grooves and a slight plough appeared on the worn surface of the AA6061 alloy. The AA6061-5 wt.%TiB2 composite showed ultra-mild wear mode. The Analysis of Variance (ANOVA) test results helped to identify the contribution of every factor to the wear behavior of both the materials. In the AA6061 alloy and AA6061-5 wt.%TiB2 composite, the number of passes and the applied load were respectively the most influencing factors.

Effect of KBF4 additive on high voltage cycling performance of lithium-ion batteries

Potassium tetrafluoroborate (KBF4), as a high-efficiency electrolyte additive, effectively enhances the electrochemical performance of LiCoO2/Li cells operating under high charging cut-off voltage. The KBF4 additive contributes towards the formation of a lower impedance and stable cathode electrolyte interface on the LiCoO2 cathode surface. This suppresses the subsequent oxidative decomposition of the base electrolyte, which allows the crystal structure of LiCoO2 to be maintained and transition metal leaching from LiCoO2 to be minimised, thus resulting in a significant improvement in the cycling and rate performance. Accordingly, cells with 0.5 wt% KBF4 electrolyte achieve an excellent capacity retention of 85.1% over 300 cycles over a voltage range of 3.0–4.5 V, whereas that of cells with the base electrolyte is only 64.7%. Moreover, KBF4, as a functional additive for high charging cut-off voltage, improves LiNi0.6Co0.2Mn0.2O2/Li cells. Cells with 1.0 wt% KBF4 and base electrolyte exhibit a superior capacity retention of 83.3% and 56.7%, respectively, over 200 cycles for voltage range 3.0–4.5 V.

Dry sliding wear behaviour of A356-TiB<SUB align="right">2/TiC in-situ composites at ambient and elevated temperatures

A356-TiB2/TiC in-situ metal matrix composites have been developed through reactions between liquid aluminium and various chemicals, such as potassium hexa fluorotitanate (K2TiF6), potassium tetra fluoroborate (KBF4), and graphite (C), through flex assisted synthesis. In the present investigation, the distinct quantities of halide salts were added into molten aluminium to obtain 0, 2.5, 5, and 7.5% of TiB2/TiC-reinforced composites. The fabricated composites were examined by a scanning electron microscope (SEM) energy dispersive analysis (EDAX) X-ray diffraction analysis (XRD) and micro-hardness tests to evaluate the effects of adding the reinforcement. The wear behaviour of A356-TiB2/TiC composites was studied using a pin-on-disk apparatus. The influence of wt% of the reinforcement, sliding velocity, normal load, and temperature on wear rate (WR), coefficient of friction (COF), specific wear rate (SWR), and wear rate per unit wt% of the reinforcement. The worn out surfaces of A356-TiB2/TiC composites were carefully analysed with an SEM. TiB2 and TiC particles improved the wear resistance of composites at ambient and elevated temperatures. This result reveals that at elevated temperatures, the pure alloy was subjected to adhesive wear, whereas oxidation wear was more dominant in A356-TiB2/TiC composites.

Dry sliding wear behaviour of A356-TiB<SUB align="right">2/TiC in-situ composites at ambient and elevated temperatures

A356-TiB2/TiC in-situ metal matrix composites have been developed through reactions between liquid aluminium and various chemicals, such as potassium hexa fluorotitanate (K2TiF6), potassium tetra fluoroborate (KBF4), and graphite (C), through flex assisted synthesis. In the present investigation, the distinct quantities of halide salts were added into molten aluminium to obtain 0, 2.5, 5, and 7.5% of TiB2/TiC-reinforced composites. The fabricated composites were examined by a scanning electron microscope (SEM) energy dispersive analysis (EDAX) X-ray diffraction analysis (XRD) and micro-hardness tests to evaluate the effects of adding the reinforcement. The wear behaviour of A356-TiB2/TiC composites was studied using a pin-on-disk apparatus. The influence of wt% of the reinforcement, sliding velocity, normal load, and temperature on wear rate (WR), coefficient of friction (COF), specific wear rate (SWR), and wear rate per unit wt% of the reinforcement. The worn out surfaces of A356-TiB2/TiC composites were carefully analysed with an SEM. TiB2 and TiC particles improved the wear resistance of composites at ambient and elevated temperatures. This result reveals that at elevated temperatures, the pure alloy was subjected to adhesive wear, whereas oxidation wear was more dominant in A356-TiB2/TiC composites.