High-temperature-resistant ceramics are widely used in mechanical equipment because of their high-temperature resistance, so what are high-temperature-resistant ceramics?
High-temperature resistant ceramics include alumina (Al2O3), zirconia (ZrO2), silicon carbide (SiC), silicon nitride (Si3N4), and boron nitride (BN). These materials are able to withstand temperatures up to 2000°C and are used in a variety of applications, such as furnace linings, high-temperature crucibles, and rocket nozzles.
- Aluminum oxide ceramics
Aluminum oxide ceramic (artificial corundum) is a promising high-temperature structure material. It has a high melting point and is an advanced refractory material, such as a crucible and high-temperature furnace tube.
- Silicon carbide ceramics
Silicon carbide ceramic is also an important structural material, it is a super hard material, with low density, lubrication, and wear resistance, except for hydrofluoric acid, which does not react with other inorganic acids, has corrosion resistance, and oxidation resistance at high temperature.
It can also resist the impact of cold and heat, heating above 1000 in the air, sharp cooling and sharp heating, and not breaking. Silicon nitride has such good characteristics that it is often used to make bearings, steam turbine blades, mechanical sealing rings, permanent molds, and other mechanical components.
- Boron nitride ceramics
Boron nitride ceramic appearance and characteristics: lubrication, easy moisture absorption. Boron nitride is a white, insoluble, and high-temperature resistant substance. It can be made by completing B2O3 with NH4Cl or burning BN with simple boron in NH3.
Usually made of boron nitride is a graphite-type structure, commonly known as white graphite. It has the same hardness as diamond and has better heat resistance than diamond. It is a new high temperature resistant super hard material for making drills, tools, and cutting tools.
- Boron carbide ceramics
Boron carbide ceramic materials have light quality, high hardness, high wear resistance, high impact resistance, neutron absorption, and other properties. BN materials have broad application prospects in the high-tech industry, nuclear power technology, national defense industry, and other fields. It is an important strategic material in the national economy and national defense construction and has a wide range of uses.