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A heterogeneous material composite composed of metals or alloys and one ceramic phase or several.
Cermets are usually ceramic phases of high melting point oxides, such as Al2O3, ZrO3, beO, and MgO. ), nitrides (TiN, BN, Si3N4, etc. ), carbides (TiC, WC, etc. ), borides (TiB2, ZrB2, etc.) The metal phase can be composed of Ti and Cr or Ni and Co and Fe. It may also include other metals such as bronze alloys and high-temperature materials.
Based on the type of ceramic, cermets fall into five main categories: carbide, oxide, carbonitride, boride, graphite, or diamond carbide.
Ceramic Powder Properties
Ceramic powder, a hybrid material for high temperatures, combines metals’ toughness and plasticity with ceramics’ high melting point and corrosion resistance.
It is resistant to high heat, and it can maintain its strength at temperatures up to 1200degC. It won’t melt when heated and won’t decompose till 1900degC. It is highly resistant to chemical corrosion, and at the same time, it’s a high-performance electrical insulating material.
Applications for Ceramic Powder
Aerospace cermets offer a lot of potential for further development, due to the harsh environment and technical requirements, such as high temperatures, wear resistances, high strength and stability. Ceramic powder can be used in the manufacture of stationary rings and valves for aerospace or aviation engines. It has excellent abrasion and high-temperature resistance.
2. Manufacturing and Processing Fields
The ceramic powder’s high hardness and wear resistance, as well as its good toughness and oxidation-resistance, make it an indispensable material in manufacturing, processing and especially for measuring and cutting tools.
3. Other areas
In addition to the high temperature and corrosion resistant ceramic powders used in the metallurgical and machinery industries, they are also used as high temperature and wear resistant parts, thermionic casthodes, and other parts.
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