China Suppliers Factory High Purity Silicon Carbide SIC 88% Granules 0-10MM Low Price Refractory Material
Product introduction
The silicon carbide produced by Chinese industry is divided into two types: black silicon carbide and green silicon carbide, both of which are hexagonal crystals Black silicon carbide （95% SiC） and has higher toughness than green silicon carbide. It is mostly used for processing materials with low tensile strength, such as glass, ceramics, stone, refractory materials, cast iron, and non-ferrous metals. Low grade silicon carbide ( 85% SiC) is an excellent deoxidizer, which can accelerate steelmaking speed, facilitate chemical composition control, and improve steel quality. In addition, silicon carbide is also widely used to make silicon carbide rods for electric heating elements. Green silicon carbide contains over 97% SiC and has good self sharpening properties. It is mostly used for processing hard alloys, titanium alloys, and optical glass, as well as for honing cylinder liners and precision grinding high-speed steel cutting tools.
Performance characteristics of silicon carbide:
High temperature stability: Silicon carbide has excellent high-temperature stability and can maintain structural stability at temperatures above 2000 ℃ without melting.
Corrosion resistance: Silicon carbide has good corrosion resistance to various chemical media, including acids, alkalis, salts, etc.
High hardness and wear resistance: Silicon carbide has a hardness second to diamond and has high wear resistance, making it an ideal abrasive and cutting tool material.
The use of silicon carbide:
1. Abrasive and grinding tools: The high hardness and excellent thermal stability of silicon carbide make it an ideal abrasive and grinding tool material. It is widely used in fields such as metal processing, stone processing, glass processing, etc. Optoelectronic devices: The wide bandgap structure of silicon carbide gives it high transmittance to visible and ultraviolet light, making it suitable for the manufacturing of high-power lasers, photodiodes, photodetectors, and other optoelectronic devices.
2. Power electronic devices: The high thermal conductivity, high voltage bearing capacity, and excellent high-temperature performance of silicon carbide make it an ideal material in power electronic devices. For example, silicon carbide based diodes and transistors have higher switching speeds and lower power consumption, which can improve the efficiency and reliability of power systems.
3. Ceramic materials: Silicon carbide ceramic materials have excellent heat resistance and corrosion resistance, and are widely used in the manufacture of high-temperature furnaces, corrosion-resistant pipelines, wear-resistant valves and bearings. In addition, silicon carbide ceramic materials also have good thermal stability and low thermal expansion coefficient, making them suitable for manufacturing high-precision instruments and semiconductor processing equipment.
Detailed presentation
Frequently Asked Questions
What are the primary differences between black and green silicon carbide?
Black silicon carbide contains about 95% SiC and offers higher toughness, making it ideal for processing low tensile strength materials like glass, ceramics, and cast iron. Green silicon carbide contains over 97% SiC, has excellent self-sharpening properties, and is mainly used for processing hard alloys, titanium alloys, and precision grinding.
What is low-grade silicon carbide used for?
Low-grade silicon carbide (containing approximately 85% SiC) serves as an excellent deoxidizer in steelmaking. It helps accelerate the steelmaking process, facilitates precise chemical composition control, and improves the overall quality of the steel.
How stable is silicon carbide at high temperatures?
Silicon carbide possesses outstanding high-temperature stability. It can maintain its structural integrity and stability at extreme temperatures exceeding 2000 ℃ without melting.
Why is silicon carbide used in power electronic devices?
Due to its high thermal conductivity, high voltage bearing capacity, and superior high-temperature performance, silicon carbide is ideal for power electronics. Diodes and transistors made from silicon carbide offer faster switching speeds and lower power consumption, enhancing system efficiency.
What are the applications of silicon carbide ceramic materials?
Silicon carbide ceramics are widely used to manufacture high-temperature furnaces, corrosion-resistant pipelines, wear-resistant valves, and bearings. Their low thermal expansion coefficient and high thermal stability also make them suitable for high-precision instruments and semiconductor processing equipment.