Abstract
The present study is to investigate the influence of weight percentage of silicon carbide (SiC) (5,10 %, 15%) and particle size (10,20,40µm) of SiC and constant 2% of Molybdenum disulphide(MoS2)is reinforced with aluminium matrix. Wear performance of the composite was carried out through pin-on-disc method to calculate friction coefficient and wear resistance of the composites. The experiments were conducted by varying the sliding speed of (1.5,2.5 &3.5 m/s), loads (30,50&70N) with sliding distance ranges from (500, 1000& 1500m) under dry sliding conditions. Taguchi plan of experiments and ANOVA method was carried out to find the outcome of reinforcement ceramic particles, sliding distance, sliding speed, and applied load over the friction coefficient and wear rate. The result reveals that applied load and sliding distance are the most influencing factors for friction coefficient. Load and percentage of SiC indicates the most affecting factor for wear rate. Worn out surface of the composites were studied by optical microscopic image and Gwyddion software. To conclude, it was interfered that 15% weight percentage of SiC at 10µm offers better wear resistance and friction coefficient in AHMMCs.
Highlights
During recent days Hybrid metal matrix composites are generating a wide interest in the area of research
Aluminium is the material mostly used as base matrix due to its lightweight, high strength and easy availability on the earth at lowest price 1-4.Ceramic particles with aluminium alloy can be effectively fabricated by stir casting technique
Hardness is increased with adding hard reinforced like silicon carbide (SiC) and increases the resistance against wear 6.The wear behaviour of automobile break pad material added with aluminium/SiC MMCs which the composites are fabricated through stir casting method
Summary
During recent days Hybrid metal matrix composites are generating a wide interest in the area of research. Aluminium is the material mostly used as base matrix due to its lightweight, high strength and easy availability on the earth at lowest price 1-4.Ceramic particles with aluminium alloy can be effectively fabricated by stir casting technique. Such that the developed MMC exhibits uniform distribution of the ceramic particles with matrix material[5].The dry sliding wear of Al composites fabricated through squeeze casting method and found that the alloy having SiC fibers exhibits low wear rate than the base aluminium alloy material.
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