These composites’ main body is the metal matrix. Ceramic additives are usually used as an additive. Metal matrix composites are the biggest alternative to traditional materials. When high elastic modulus of ceramics join with plastic transformation properties of metals, materials having a higher resistance to corrosion, high fracture toughness and high compressive stress can be obtained. These composites are widely used in the automotive, aerospace and defense industry.
Ceramics have superior high temperature properties but are very rigid and brittle. Furthermore, they have a relatively low density, low thermal shock resistance and toughness. To improve these properties of ceramics ceramic matrix composites are used. Examples of ceramic materials used for CMC production are Al2O3, SiC, Si3N4, B 4C, TiC, TiB, TiN and AIN.
Depending on the application, ceramic matrix composites are obtained by using one or more of these ceramics. Example of additives used are carbon, ceramics and glass fibers. In case of ceramic fibers reinforced with ceramic materials, strength and toughness can be increased.
Polymer materials are used almost every part of our lives. Although polymers have good corrosion resistance, light and cheap but also have disadvantages such as low strength and flammability. Today polymer matrix composites are used in many fields due to the improved properties that they offer. Such applications are automotive, home appliances and sports equipment. Some of the additives used in PMC’s are aluminium trihydroxide (ATH), glass fiber, nano clay, talc, barium titanate, kevlar and carbon nano tubes.