Widely used in coal-fired power plants, iron and steel, smelting, machinery, coal, mining, chemical industry, cement, port terminals and other enterprises, coal conveyor, material conveyor system, powder system, ash removal, dust removal system and all other wear and tear of machinery and equipment, are available according to different needs of different types of products.
Alumina ceramics is a kind of ceramic material with alumina (Al2O3) as the main body, which is used in thick film integrated circuits. Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. It is important to note that ultrasonic washing is required. Alumina ceramics is a widely used ceramics, because of its superior performance, in the modern society has become more and more widely used to meet the needs of daily use and special performance.
Categories
Alumina ceramics are divided into two types: high purity type and common type.
High-purity alumina ceramics Al2O3 content of 99.9% or more of the ceramic material, because of its sintering temperature of up to 1650-1990 ℃, transmission wavelength of 1 to 6 μm, generally made of fused glass to replace the platinum crucible; the use of its translucent and alkali corrosion-resistant used as sodium lamps; in the electronics industry can be used as integrated circuits, substrates and high-frequency insulating materials. Substrate and high-frequency insulating materials.
Ordinary alumina ceramics according to the different Al2O3 content is divided into 99 porcelain, 95 porcelain, 90 porcelain, 85 porcelain and other varieties, and sometimes the Al2O3 content of 80% or 75% of the ordinary alumina ceramics series.
The 99 alumina ceramic materials used in the production of high-temperature crucibles, refractory furnace tubes and special wear-resistant materials, such as ceramic bearings, ceramic seals and water valves, etc.; 95 alumina ceramics are mainly used as corrosion-resistant, abrasion-resistant parts; 85 ceramics due to the often doped with part of the talc to improve the electrical properties and mechanical strength, can be used with molybdenum, niobium, tantalum, etc., and other metal seals, and some of them are used as an electro-vacuum device devices.
Refer to Baidu Encyclopedia-Alumina Ceramics