How is ceramic defined?
Ceramics are generally made by taking mixtures of clay, earthen elements, powders, and water and shaping them into desired forms. Once the ceramic has been shaped, it is fired in a high temperature oven known as a kiln. Often, ceramics are covered in decorative, waterproof, paint-like substances known as glazes
Ceramics are compounds of metallic and nonmetallic elements possess high hardness, high compressive strength, high elastic modulus, low thermal expansion, low density etc.
It is possible to obtain ceramic materials of any required properties, mechanical, electrical, chemical or magnetic by suitable processing techniques and by composite approach and hence has a wide range range of applications
They have special advantages of light weight, can withstand very high temperatures and aggressive environments compared to metals used mainly as coatings and sensors