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Discussion on the application of silicon nitride ceramic materials

wallpapers News 2020-05-18
Silicon nitride, a compound that mainly relies on artificial conditions, was developed by foreign scientists more than 150 years ago. Silicon nitride, which exists naturally on earth (about 2×5 meters), was not discovered in meteorites until the 1990s. Silicon nitride ceramic materials as a kind of important structure, share with other metals and materials more superior resistance to high temperature, corrosion resistance, wear resistance, high toughness, high bending strength, such as performance, can be applied to traditional metal materials can not match to meet the demand of the high extreme operating environment, it made spare parts and other products can be used in mechanical engineering, ultrafine grinding, high performance machine tool cutting tools, metallurgy, etc.
The following is a brief introduction of several silicon nitride ceramic products (including but not limited to) :
(1) silicon nitride ceramic bearings and bearings
The silicon nitride ceramic ball is a precision ceramic product sintered at high temperature in a non-oxidized environment. It has the characteristics of acid and alkali resistance and corrosion resistance. It can be used in sea water for a long time and has excellent insulation and self-lubricity.
(2) turbine rotor made of silicon nitride
Turbocharging is a technology that USES the exhaust gas generated by the operation of internal combustion engine to drive the air compressor. Its function is to improve the air intake of the engine, thereby increasing the power and torque of the engine. At the same time, it is of great significance to reduce fuel consumption, reduce noise and reduce harmful molecules in tail gas.
(3) silicon nitride ceramic tool
These tools have higher toughness, impact resistance, high temperature strength and thermal shock resistance than the second generation composite alumina tools. Silicon nitride cutting tools are mainly suitable for the rough machining of cast iron, high temperature alloy, high-speed cutting and heavy cutting. Its excellent chemical stability and wear resistance can be used for long cutting operation under the condition of high speed. The operating efficiency of the carbide cutting tools is improved by more than three times on average.
(4) aluminum metallurgy silicon nitride ceramic parts
The corrosion resistance of si3n4 ceramics can be used to make thermocouple tube bushing, aluminum furnace lining, aluminum liquid bun lining, crucible, aluminum mold, aluminum electrolyzer and other tools in the continuous aluminum casting and rolling production line and aluminum smelting and melting operations.

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Tag: silicon nitr