Fused Silica Ceramic

Glass codes 7980 7979 and 8655 are high purity non crystalline silica glasses with excellent optical qualities.

Fused silica ceramic.

Fused silica our fused silica material consists of sintered quartz glass high purity powder with a fine pore structure which has an extremely low expansion coefficient and thus a very good thermal shock resistance. Hpfs fused silica glasses are known throughout the industry for their consistent repeatable performance. The material is also chemically inert up to moderate temperatures except to hydrofluoric acid which dissolves silica. Iso9001 and iso14001 certified.

Fused silica is offered in many different grades to support various product applications. Blasch s fused silica refractories are designed for optimal thermal shock resistance insulating properties and a low coefficient of thermal expansion. Fused silica glass is a very low thermal expansion material and so is extremely thermal shock resistant. Fused silica ceramics have superior comprehensive properties like low bulk density 2 20 g cm 3 and low coefficient of thermal expansion 0 54 10 6 k 0 800 c good chemical resistance high temperature creep resistance and high thermal shock resistance no breakage after thermal shock between 0 and 1100 c excellent insulating properties 10 15 ω at room.

It will devitrify above about 1100 c in the presence of contaminants such as sodium phosphorus and vanadium with the. Although the terms fused quartz and fused silica are used interchangeably the optical and.