Abstract

Hybrid metal matrix composites (HMMCs) gathered attention due to their attractive features such as reduced weight, better strength, high thermal stability and corrosion resistance. HMMCs are composites of the second generation wherein more than one type of reinforcement having different shape and size is used to achieve better properties. Most of the HMMCs are being manufactured using the synthetic form of reinforcements such as Al2O3, SiC, B4C and TiC. The properties of the composites are governed by the nature of the reinforcement used for fabrication. Nowadays, green HMMCs are produced with a combination of industrial–agricultural waste and synthetic reinforcement particles. Hard ceramic synthetic particles are used as primary reinforcement and industrial–agricultural wastes are used as secondary reinforcement to fabricate the hybrid composites. Development of green hybrid composites using industrial/agricultural waste- and synthetic-based reinforcements is gaining more importance because of the easy availability of industrial–agricultural waste reinforcements with low densities and low cost. This chapter reviews the potential and effect of industrial/agricultural waste- and synthetic-based reinforcements on tribological properties of HMMCs for industrial applications. It may also serve as a knowledge base for future research towards the manufacturing of green HMMCs using industrial/agricultural waste-based reinforcements.

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