What are the classifications of industrial ceramics included?

What are the classifications of industrial ceramics included?

1. Ordinary ceramics

Ordinary ceramics refer to clay ceramics, which are fired in a ratio of clay, feldspar, and quartz. Their performance depends on the purity, particle size, and ratio of the three raw materials. Generally, the texture is hard, corrosion-resistant, non oxidizing, non-conductive, and can withstand certain high temperatures with good processing formability.

2. Alumina ceramics

This ceramic is mainly composed of AL2O3 (with a mass fraction of AL2O3>45%). According to the different main crystal phases in the ceramic body, it can be divided into corundum porcelain, corundum mullite porcelain, and mullite porcelain, etc; AL2O3 can also be divided into 75 porcelain, 95 porcelain, and 99 porcelain according to its mass fraction.

3. Silicon carbide ceramics

The biggest characteristic of silicon carbide ceramics is their high temperature strength, high thermal conductivity, wear resistance, corrosion resistance, and creep resistance. They are often used as high-temperature sintering materials in the fields of national defense, aerospace, and other scientific and technological fields. They are used to manufacture nozzles for rocket tail nozzles, throats for casting metals, and high-temperature parts such as thermocouple sleeves and furnace tubes.

4. Lithium oxide ceramics

The main crystal phases of lithium oxide ceramic products are lithium nepheline (Li2O · Al2O3 · 2SiO2) and spodumene (Li2O · Al2O3 · 4SiO2), characterized by low thermal expansion coefficient (-0.03 × 10/℃~4.08 × 10/℃ in the range of 100-1000 ℃) and good thermal shock resistance. Li2O is an external oxide that enhances the glass network and effectively enhances the chemical stability of glass.

Www.superbheater.com