**1.1.5 Beryllia**

Beryllia has a high resistance to reduction and thermal stability and its melting point is 2550 0C. It is the most resistant oxide to reduction with carbon at higher temperatures. Thermal resistance is very high though its electrical conductivity is very low. Mechanical properties of beryllia are steady till 1600 0C and it is one of the oxides that has high compression strength at this temperature. An important amount of beryllium oxide acquired from beryl. It is a favourable refractory material for molten metals owing to its resistance to chemical materials (Geçkinli, 1992).
