Copper matrix composites (CMCs) are known to be lightweight and possess competent mechanical properties, hence is highly suitable for a broad range of advanced applications. Its significance in aerospace, marine, and structural domains make it worthwhile to be investigatedfor low-cost manufacturing and selection of appropriate reinforcements. A comprehensive understanding of CMCs in terms of its fabrication methodologies and the diverse properties achievable through the incorporation of discrete reinforcement materials are essential to beexplored. Given, this manuscript evaluates the distinct methodologies for the preparation of CMCs through various fabrication routes. Besides, the substantial improvement/variation in properties such as mechanical (strength, toughness, hardness and creep), metallurgical (microstructure, grain size and grain boundaries), thermal properties (thermal conductivity, coefficient of thermal expansion) and tribological properties (friction, wear) through the incorporation of reinforcements (additives/filler materials/adhesives) of CMCs also is brought under detailed discussion.

Copper/Diamond composites have gained a lot of attention in recent years due to their excellent thermal conductivity and their potential for use in high-power electronic devices. The current work targets on an experimental investigation of the tribological,mechanical, and thermal behaviour of copper diamond composite by using reinforced micro-diamond particles. Copper matrix composites with varying weight percentages of diamond particles were produced with the aid of the powder metallurgy. The wear tests were carried out on Pin-on-Disc wear test machine as per ASTM G99. The doping of an optimum amount of diamond particles (1% wt.) improved the overall wear performance by 51% under a normal load of 80 N. The doping had also showed a significant improvement in hardness by 26% and thermal conductivity by 1 %. The primary wear mechanisms of Cu-Diamond composites appear to be a combination of brittle fracture, fragmentation of diamond-reinforced particles and ploughing in the Cu-alloy matrix.

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