Application of black carborundum in wear-resistant coating fillers
Black carborundum has the following application characteristics and performance advantages in the field of wear-resistant coating fillers:
1. Core application scope
Teflon coating
As a wear-resistant reinforcing filler, it is suitable for non-stick pan coating, chemical equipment anti-corrosion coating, medical equipment surface treatment and other fields, especially in the building materials industry and other scenes with low requirements for fineness, it can replace green carborundum.
Industrial wear-resistant repair agent
Used for pipeline anti-corrosion, mechanical parts surface repair, etc., to enhance the wear resistance and impact resistance of the coating.
High temperature wear-resistant coating
Provide stable wear-resistant protection in extreme environments such as aircraft engines and high-temperature furnaces.
2. Performance advantages
High hardness and wear resistance
The Mohs hardness reaches 9.15, which is significantly higher than traditional materials such as quartz sand and corundum, and can effectively extend the service life of the coating.
Chemical stability
Resistant to acid, alkali and salt corrosion, suitable for corrosive environments such as chemical equipment and marine engineering.
Thermal stability
High thermal conductivity and low thermal expansion coefficient (about 4.0×10⁻⁶ K⁻¹), which can maintain structural stability at high temperatures of 1600℃ and prevent coating cracking.
Particle size controllability
Fine particle size (P240-P5000) and high purity (≥98%) ensure the uniformity and density of the coating surface.
3. Technical parameters and scene adaptation
Typical indicators : SiC ≥ 98%, low magnetic content, uniform particle size distribution .
Scene adaptation
Fine polishing : used for surface treatment of precision devices such as optical glass and gemstones ;
Heavy load environment : such as high load friction protection of mining machinery and bearing steel parts . IV.
Comparison with other materials
Green carborundum: Black carborundum has a slightly lower hardness (green carborundum Mohs hardness 9.4), but lower cost, and is a cost-effective choice for non-high-precision scenarios;
Metal alloy filler: Better wear resistance and significantly improved high temperature stability, but attention should be paid to the brittleness control of the coating