Performance of Fused Silica Ceramic

The raw material of Fused Silica Ceramic is fused silica or quartz glass, which is a ceramic product made by crushing, molding, sintering, and other processes. The earliest development was completed by the United States in the 1960s, and mass production was achieved in the United States in 1963. It is a new type of high-purity and high-temperature resistant quartz material. In the following years, my country started the research and application of quartz ceramics in 1972 and realized industrialization in Qingdao, Shandong that year. Compared with quartz glass, quartz ceramics can be regarded as a comprehensive "upgrade" to quartz glass. So what is the performance of Fused Silica Ceramic? Let's see together.

The following is a list of contents:

• Good thermal conductivity

• The flexural strength of Fused Silica Ceramic increases with increasing temperature

• The small coefficient of thermal expansion is also its biggest feature

• Chemical properties are also very stable

• Capacitive properties

Good thermal conductivity

One of the biggest features of Fused Silica Ceramic is that its thermal conductivity is very good, the thermal conductivity changes very little, and the thermal conductivity hardly changes below 1100 °C;

The flexural strength of Fused Silica Ceramic increases with increasing temperature

From room temperature to 1100℃, its strength can be increased by 33%. From the point of view of material physics, it is because Fused Silica Ceramic increases its plasticity but decreases its brittleness as the temperature increases. This characteristic makes it special from other ceramic products (alumina ceramics, silicon nitride ceramics, etc.);

The small coefficient of thermal expansion is also its biggest feature

When the temperature reaches 800°C, its thermal expansion coefficient is only 0.54×10-6/°C (quartz with high purity). If it is preheated under certain conditions, its value is even lower, which is almost the lowest among inorganic materials. Therefore, the volume of Fused Silica Ceramic is very stable, the performance is also very stable when it is resistant to high temperature, and the application environment is also very wide;

Chemical properties are also very stable

Fused Silica Ceramic hardly reacts with other acids and bases, except for HF acid and hot phosphoric acid above 300°C, which erodes it. Other metal melts such as sodium, potassium, uranium, cesium, lead, and arsenic have not invaded it either;

Capacitive properties

Fused Silica Ceramic has a small change rate of dielectric constant and dielectric loss angle with temperature, and can be used as a high-temperature resistant material for aerospace and missile casings.

All in all, Fused Silica Ceramic has low thermal conductivity, low drying, and shrinkage rate, making it easier to form complex shapes and large products, and the cost is much lower than that of quartz ceramic products. Since its inception, it has been widely used. application. Not only in traditional industries such as the metallurgical industry and chemical industry, but also new high-tech fields such as aerospace, electronic industry, solar cell, atomic energy industry, etc., Fused Silica Ceramic has also become an indispensable material, and more and more people started paying attention.

The above is about the performance of Fused Silica Ceramic. If you are interested in Fused Silica Ceramic, you can contact us. Our website is https://www.yufengrefractory.com/. I look forward to your arrival very much and hope to cooperate with you.