Metal And Ceramic Matrix Composites

Metal and ceramic matrix composites.

Metal and ceramic matrix composites.

The use of graphene as reinforcement for structural materials is motivated by their exceptional mechanical functional properties and their unique physical chemical characteristics. This review critically examines the current state of graphene reinforced metal gnp mmc and ceramic matrix composites gnp cmc. Metal matrices offer not only high temperature resistance but also strength and ductility or bendability which increases toughness. Although there is not a universally accepted definition of mmcs we may consider mmcs as being a composite system with two distinct constituents that is a metallic matrix most commonly aluminium magnesium or titanium and a second material metal ceramic or other organic compound acting as a reinforcement.

Metal matrix composites findings metal matrix composites mmcs usually con sist of a low density metal such as aluminum or magnesium reinforced with particulate or fibers of a ceramic material such as silicon carbide or graphite. The requirement that finished parts be able to operate at temperatures high enough to melt or degrade a polymer matrix creates the need for other types of matrix materials often metals. Ranjit bauri devinder yadav in metal matrix composites by friction stir processing 2018. 1 2 1 particle reinforced metal matrix composites pmmcs pmmcs contain ceramic particles with an aspect ratio less than five.

Compared with unreinforced metals mmcs offer higher specific strength and stiffness. Both the matrix and the fibers can consist of any ceramic material whereby carbon and carbon fibers can also be considered a ceramic material. The shape of the reinforcing particles may vary as spherical platelet or any other regular or irregular shape. Metal matrix composites mmcs are often related to light metal matrix composites.

A metal matrix composite mmc is composite material with at least two constituent parts one being a metal necessarily the other material may be a different metal or another material such as a ceramic or organic compound when at least three materials are present it is called a hybrid composite an mmc is complementary to a cermet.