The basic classification of alumina ceramics

About the category of the alumina ceramic, there is still room for many need to discuss.
Alumina ceramics are divided into high purity type and ordinary type two kinds.
Alumina wear resistant ceramic
Type high purity alumina ceramic Al2O3 content in more than 99.9% of ceramic material, due to the sintering temperature up to 1650-1990 ℃, the transmission wavelength of 1 ~ 6 microns, usually made from molten glass to replace platinum crucible;Using alkali metal corrosion resistance is used as the transmission of light and sodium lamp tube;In the electronic industry can be used as a substrate integrated with high-frequency insulation.

Normal department of alumina ceramics by Al2O3 content is divided into 99 porcelain, 95 porcelain, 90 porcelain, 85 porcelain, and other varieties, sometimes Al2O3 content in 80% or 75% are classified as ordinary alumina ceramic series.99 alumina ceramic materials used to make high temperature crucible, furnace pipe and special wear-resistant materials, such as ceramic bearings, seals and water valve, etc.;95 alumina ceramics is mainly used as corrosion resistant, wear resistant ceramic components;Because in 85 China often mixed with part of talc, improved the electric properties and the mechanical strength, with molybdenum, niobium, tantalum metal sealing, some used for electric vacuum devices.

评论

发表评论

此博客中的热门博文

Silicon carbide ceramic wear plate supplied from factory

图片
 Abrasion resistant ceramics tiles supplied from chemshun ceramics includes alumina ceramic tile, ZTA ceramics tiles,  silicon carbide ceramic tile , Al2O3 99.7% high alumina tiles. Here mainly introduce wear resistant sic ceramic plate as follows : Chemshun SiSic wear plate is an excellent material for the wear protection application, especially at a certificate high temperature.  The material of siliconized silicon carbide has series of basic superiority and characteristic. Many products can be made from it such as beams, rollers, cooling air pipes, thermal coumple protection tubes, temperature-measuring tubes, sealing parts,and special shaped parts. The methods of processing usually including slip casting , extrusion, pressing. 
阅读全文

Characteristics and applications of inert alumina ceramic balls

图片
   Inert alumina porcelain balls have the characteristics of high strength, high chemical stability and thermal stability. They can withstand high temperature, high pressure and corrosion from acids, alkalis, salts and various organic solvents. They are widely used in petroleum, chemical industry, fertilizers, natural gas and environmental protection industries. As a support and covering material for the catalyst in the reactor, it can buffer the impact of liquid and gas entering the reactor on the catalyst, protect the catalyst, and improve the distribution of liquid and gas in the reactor.       Inert alumina ceramic balls are used in industries such as environmental protection and environmental protection as covering support materials and tower packing for catalysts in reactors. Inert alumina ceramic balls have the characteristics of high temperature and high pressure resistance, low water absorption and stable chemical properties. It can withstand the corrosion of acids, alkalis a
阅读全文

What ‘s the advantage of ZTA toughened wear resistant ceramics

图片
  ZTA toughed ceramic is a new material with excellent performance and wide application prospects. ZTA, also known as alumina-zirconia composite phase ceramic, is a composite material composed of two ceramic phases, alumina and zirconia. It is a multi-phase ceramic with excellent chemical stability, thermal stability and high strength. It inherits the high hardness of alumina ceramics and the high toughness of zirconia ceramics, and has excellent wear resistance, high temperature stability and toughness. 1. Anti-wear performance: ZTA toughed ceramics have excellent wear resistance. It has high hardness and can maintain good wear resistance under harsh conditions such as high speed and high pressure. This makes ZTA tough ceramics widely used in high-speed friction, motorcycle brake pads and other fields. 2. High temperature stability:   ZTA toughed ceramics have a high melting point and good high temperature stability. In high temperature environments, it can maintain its original stre
阅读全文