Abstract:

In this study, ZA40/SiC composite samples were produced by adding silicon carbide (SiC) powders as reinforcement into the matrix material zinc-aluminium (ZA40) alloy powders by powder metallurgy method, which is an advanced technique in material production. As the amount of reinforcement, the ratio of SiC into the ZA40 matrix was determined as 0-0.5-1-1.5 and 2 wt. %. In the production phase, the powders were mechanically alloyed in a planetary ball mill at 400 rpm under a protective argon atmosphere for 2 hours at room temperature. The mixed powders were sintered under 600 MPa pressure at 500 °C for 3 hours by hot press method. After taking the hardness and density values of the powders made rigid, they were examined by calculating their wear resistance, weight losses and friction coefficients under 10 and 20N loads, traveling 100 meters at 200 rpm in a ball-on-disk abrasion test setup. After the wear tests, detailed SEM (Scanning Electron Microscope) images of the samples were examined and the effects of wear they were exposed to was determined by looking at the damage. According to the results, it was seen that increasing SiC reinforcement changed the physical and mechanical properties of the composites and made significant contributions to the wear resistance.

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