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Write a short note on particle reinforced composites
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written 6.1 years ago by |
Particle reinforced composite :
Particles are made from metal powder, mineral powder, ceramic powder & carbon black. Particles increases elasticity modulus & decreases ductility & permeability. It also produces inexpensive composite material.
i) Large particle composite: Its features are as follows
Examples:
Material | Matrix | Dispersed | Properties | Uses |
---|---|---|---|---|
1.Concrete | cement | Sand & gravel | Harder & stronger than plain cement | Construction purpose |
2.Oxide based cermets | Cr | Al2O3 | Good strength & good shock resistance properties | Shock resistant equipment |
3.Carbide based cermets | Co & Ni | 1.WC &TiC | 1.increases surface hardness | Wire drawing, dyes& machine parts |
Co & Ni | 2.CrC | 2. High abrasion & resistance resistance | Valves, Spray nozzles & pump parts | |
4.Modern rubber | Vulcanized rubber | Carbon black,(Stiffer) | Enhancement in mechanical properties | Used in automobile industry for making tires |
5.Spherodized steel | α Iron( ductile) | Fe3C cementite(brittle) | Ductility of composite decreases | Spherical steel structure for fixing tires |