The Knowledge of Ceramic Powder Properties And Ceramic Powder Applications
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Update time : 2021-06-22 09:02:36
Ceramic powder is a heterogeneous composite material composed of metal or alloy and one or several ceramic phases.
The ceramic phase in cermets is usually high melting point oxides (Al2O3, ZrO3, BeO, MgO, etc.), nitrides (TiN, BN, Si3N4, etc.), carbides (TiC, WC, etc.), borides (TiB2, ZrB2, etc.) The metal phase is mainly composed of Ti, Cr, Ni, Co, Fe and other metals used alone or together, and can also be metal materials, such as bronze alloys, high-temperature alloys, etc.
According to the type of ceramic phase, cermets are mainly divided into oxide-based, carbide-based, carbonitride-based, boride-based, graphite-containing or diamond-containing carbide-based.
Ceramic Powder Properties
As a high-temperature material between high-temperature alloys and ceramic materials, ceramic powder has both the high toughness and plasticity of metals and the high melting point, corrosion resistance and wear resistance of ceramics.
Ceramic powder is extremely resistant to high temperatures, and its strength can be maintained up to a high temperature of 1200°C without falling. It will not melt into a melt after being heated, and will not decompose until 1900°C. It has amazing chemical corrosion resistance; at the same time it is a kind of high-performance electrical insulation materials.
Ceramic Powder Applications
1. Aerospace
In the field of aerospace, cermets have broad room for development due to harsh environmental and technical requirements such as high temperature resistance, wear resistance, high strength, and high stability. Ceramic powder has good abrasion resistance and high-temperature strength, and can be used to manufacture valves and stationary rings for aviation or aerospace engines.
2. Manufacturing and processing fields
High hardness, good wear resistance, high bending strength, good toughness, oxidation resistance and other properties determine that ceramic powder has an irreplaceable role in the field of manufacturing and processing, especially in measuring tools and cutting tools.
3. Other areas
Ceramic powders with good high temperature resistance and corrosion resistance are also widely used in other fields, such as high temperature crucibles and high temperature parts used in the metallurgical industry, high temperature resistant and wear resistant parts in the machinery industry, thermionic cathodes in the electronics industry, etc.
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