Abstract

The demand in usage of advanced material in lightweight Aluminum (Al) has increased drastically in the present, especially in automobile and aerospace applications. Aluminium based Metal Matrix Composites (MMCs) has its own advantage that it offers a very low thermal expansion coefficient, high specific strengths, wear and heat resistance as compared to conventional Al alloys. To group all these properties, Aluminum based MMCs have become a very useful method for various industrial applications. Therefore, a combination of Aluminum (Al) and Tungsten carbide-cobalt (WC-Co) is of interest. Al-WC-Co composites with 10 to 35 weight % of WC-Co were fabricated using powder metallurgy o process. Then, the powder mixtures were pressed and sintered by using vacuum sintering technique at above 600 C. In this present research, the samples were tested for its hardness by rock well hardness test. It was found that the hardness increased with increase in percentage of WC-Co. The surface morphology of the samples were investigated by Scanning Electron Microscopy (SEM). PXRD (Powder X-Ray Diffraction) analysis reveals that, uniform structure of composites was formed in Al-WC-Co.

Keywords
MMC, SEM, Tungsten Carbide, PXRD.

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