Glass & Ceramics

WHAT ARE GLASS

1.Glass is one of the most useful but inexpensive materials in the world. Many productsare made from glass because of its specials properties.

2.Glass is:

a.Transparent, hard but brittle. 

b.A heat and electric insulator.

c.Resistant to corrosion.

d.Chemical not reaction and therefore resistant to chemical attack.e.Easy to maintain.

CERAMICS

1.Traditional silicate ceramics are made by heating aluminosilicate clay such as kaolin toa vary high temperature.

2.Ceramics have many special properties that make them one of the most useful materialsin our everyday life. That:

a.Are hard, strong but brittle 

b.Have high melting point and remain stable at high temperature

c.Are heat and electric instrument

d.Are resistant to corrosion and wear 

e.Are chemically not reactivef.Do not readily deform under stress

3.Ceramic play important role in our daily life. They are uses as

a.Construction materials

i.Ceramic are strong and hard, uses to make roof tiles, bricks cement, sinks, andtoilet bowls.

ii.They are also used to make refractory bricks because high resistant to heat. 

b.Decorative items

i.To make pottery, china plates, and porcelain vases since they do not tarnisheasily and are durable.

ii.They are used to make bathroom fixture such as floor and wall tiles.

c.Electrical insulator 

i.Ceramic are used to make electrical insulator in electrical items such as toasters,fridges and electrical plug.