What are the uses of recrystallized silicon carbide?
Release time:
2022-06-22
Recrystallized silicon carbide What are its uses?
Recrystallized silicon carbide is available in large quantities and cannot be considered a high-tech product. The application of high-tech nano silicon carbide powder cannot form economies of scale in a short period of time. So, what are the uses of recrystallized silicon carbide?
What are the uses of recrystallized silicon carbide?
1. Abrasives. Silicon carbide abrasives, due to their high hardness, chemical stability, and certain toughness, are widely used abrasives and can be used to manufacture grinding wheels, oilstones, coated abrasives, etc. They are mainly used for grinding glass, ceramics, stone, cast iron, and some non-ferrous metals and other non-metallic materials, and have poor reactivity with these materials.
2. Refractory materials. Silicon carbide refractory materials have excellent high-temperature properties, such as high strength, high thermal conductivity, impact resistance, oxidation resistance, wear resistance, and corrosion resistance. They are widely used in metallurgy, energy, and chemical industries.
3. Corrosion resistance. Recrystallized silicon carbide is a high-tech ceramic mainly made of submicron silicon carbide powder. Recrystallized silicon carbide prepared by mature processes has high hardness and good wear resistance, high-temperature resistance, and corrosion resistance.
4. Metallurgical raw materials. Silicon carbide decomposes in molten steel and reacts with free oxygen and metal oxides in the molten steel to generate carbon monoxide and silicon-containing slag, which can be used as a refining agent for steelmaking. Silicon carbide is often added to molten cast iron to allow a small amount of silicon to enter the molten iron, promoting the perfection of the castings.
What is Recrystallized silicon carbide ?
Recrystallized silicon carbide, also known as recrystallized silicon carbide, is made from high-purity ultrafine silicon carbide. Under the protection of 2400 high temperature and certain pressure, silicon carbide undergoes evaporation-condensation recrystallization, and the particles contact each other to form a sintered body. It basically does not shrink, but there are a certain number of pores. Silicon carbide ceramics have high brittleness and low fracture toughness.
What is the research and development process of crystalline silicon carbide?
1. Recrystallized silicon carbide As a ceramic product, it is mainly due to its unique high-temperature mechanical properties. It was successfully prepared in the 1950s and applied to high-temperature electrical appliances. It was not widely used until the 1970s.
2. During this period, research was conducted on sintering mechanisms, performance improvements, and industrialization. Because the slurry method can obtain higher density, thus obtaining higher mechanical properties and service life, the pressing method initially used has gradually been replaced by the increasingly mature slurry method. With the progress of pressure injection, centrifugal injection, and other injection molding technologies and the emergence of new mold materials, the role of injection molding methods in silicon carbide recrystallization is becoming increasingly important.
3. With new demands, recrystallized silicon carbide has developed from its initial high-temperature equipment to its applications in many fields, including structure and function.
