High Purity 88% Silicon Carbide Granules 0-10MM - Low Price from China Suppliers and Factory
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) 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 & Optoelectronic devices:
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. 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 main differences between black and green silicon carbide?
Black silicon carbide contains about 95% SiC and has higher toughness, making it ideal for processing materials with low tensile strength like glass, ceramics, and cast iron. Green silicon carbide contains over 97% SiC, has excellent self-sharpening properties, and is mostly used for processing hard alloys, titanium alloys, and precision grinding.
What are the key performance characteristics of silicon carbide?
Silicon carbide features high-temperature stability (maintaining structure above 2000 ℃ without melting), excellent corrosion resistance to acids, alkalis, and salts, and high hardness second only to diamond, offering superior wear resistance.
How is low-grade silicon carbide utilized in industrial manufacturing?
Low-grade silicon carbide (containing 85% SiC) acts as an excellent deoxidizer. It helps accelerate the steelmaking process, facilitates control over chemical composition, and improves overall steel quality.
In what ways is silicon carbide applied in optoelectronic and power electronic devices?
Its wide bandgap structure makes it suitable for high-power lasers and photodetectors. For power electronics, its high thermal conductivity and high voltage bearing capacity enable silicon carbide-based diodes and transistors to achieve faster switching speeds and lower power consumption.
Why is silicon carbide suitable for producing ceramic materials and high-precision instruments?
Silicon carbide ceramic materials offer exceptional heat and corrosion resistance, low thermal expansion coefficient, and high thermal stability. This makes them ideal for high-temperature furnaces, corrosion-resistant pipelines, wear-resistant valves, and semiconductor processing equipment.