Effect of sintering parameter in copper based alloys metal matrix composite

Mohd Nor, Mohd Khaidin (2014) Effect of sintering parameter in copper based alloys metal matrix composite. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Copper alloys have a good strength but the copper is soft and not suitable for hard application such as cutting tool. Due to the limitation on properties of copper alloy, it is vital to embed it with others hard materials. Among hard material which include metal and ceramic, tungsten carbide (WC) has attractive features to combine with copper alloys such as hardness and wear resistance. Thus the aim of this project is to synthesized and determined the properties of the composite compound of copper alloy with WC using powder metallurgy route. A mixture powder of Cu/WC powder has been conducted using planetary ball milling process to produce homogeneous composites powder. The concentration of WC as a reinforcement added to the Cu powder is 10, 20 and 30 wt% respectively and sintered at temperature in the range of 900°C-1050°C. The result shows that both hardness and density increased with the increase of sintering temperature for all compositions. However at 1050°C the density and hardness for 70Cu/30WC composition was slightly decreased. For SEM image, it was observed that the porosity decreased by increasing sintered temperature from 900°C to1000°C.

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