Question

Ceramic materials classification and properties

Answer 1

Ceramic materials are inorganic, non-metallic materials made from compounds of a metal and a non metal. Ceramic materials may be crystalline or partly crystalline. They are formed by the action of heat and subsequent cooling.

Properties of Ceramics:

1)Extreme hardness

– High wear resistance

– Extreme hardness can reduce wear caused by friction

2)Corrosion resistance

3)Heat resistance

– Low electrical conductivity

– Low thermal conductivity

– Low thermal expansion

– Poor thermal shock resistance

4)Low ductility

– Very brittle

– High elastic modulus

5)Low toughness

– Low fracture toughness

– Indicates the ability of a crack or flaw to produce a catastrophic failure

6)Low density

– Porosity affects properties

7)High strength at elevated temperatures