Paradigm of state-of-the-art CNT reinforced copper metal matrix composites: processing, characterizations, and applications

Abstract

The role of materials and materials science is increasing day by day; with newer applications in the domain of engineering and technology. The metal matrix composites have revealed their potential in the advanced applications and proved their worthiness where monolithic conventional materials failed to deliver. Further, the variety of reinforcements available can alter the properties and can help in obtaining tailor-made properties as per requirements. The functional properties can be incorporated and further enhanced by adding the relevant reinforcements in the metal matrix. Copper based MMC's are widely used in many thermal and electrical applications coupled with high strength, better heat transfer, and excellent corrosion resistance. These properties can further be altered and improved by addition of carbon nanotubes (CNT's) reinforcement to the copper matrix. The present work focusses on the processing routes of CNT's and copper-CNT's MMC's with focus on microstructures, properties and correlation with reinforcement percentages and processing methods. A detailed review on the processing of Cu-CNT MMC's is presented with the effect of reinforcement on mechanical (strength and hardness), thermal conductivity, electrical conductivity and functional properties.

Keywords

• Metal matrix composites
• Carbon nanotubes (CNT'S)
• Copper
• Strength
• Electrical conductivity
• Hardness