ANSSEN PRODUCTS
CVD Sic Coating
CVD Sic Coating
Keywords：
CVD
Chemical Vapor Deposition,silicon carbide coating
SiC coating
Category：
Special Graphite
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Product Introduction
The performance & specification of silicon carbide coatings usually vary according to the specific application needs and preparation process, and the following are the common key index classifications and typical parameter ranges:
1. Physical properties:
1) Density and thickness
Density general range: 1.8~2.65 g/cm³ (affected by different formulations and particle content) For example, the density of some high-content silicon carbide coatings can reach 2.0~2.2 g/cm³, and the coating thickness is generally 50±20μm, which can be customized according to customer requirements, such as 100μm or more.
2) Appearance and condition
Color: Gray, black, or customized (e.g. gold tantalum carbide coating).
Form: paste, cement or liquid (pourable type).
2. Mechanical properties
1) Hardness
Mohs hardness: 9.2~9.7 (close to diamond).
Shore D: 89~92 (after solidifying).
2) Strength
Compressive strength: 930~1250 kg/cm² (room temperature solidifying type);
Tensile strength: 335~663 kg/cm²;
Shear strength: 130~217 kg/cm²;
Flexural strength: 480~641 kg/cm².
3) Abrasion resistance
High-hardness silicon carbide particles significantly improve resistance to erosion, cavitation, and friction wear, making them suitable for high-abrasion environments (e.g., pump impellers, pipe elbows).
3. Chemical properties
1) Corrosion resistance
It can withstand strong acids (such as sulfuric acid, phosphoric acid), strong alkalis and chloride ions, such as: 30% sulfuric acid/hydrochloric acid immersion without obvious changes; Stable in 50% sodium hydroxide solution.
2) Antioxidant properties
The conventional coating is stable for a long time in an aerobic environment of 1600°C, and the special nano coating can withstand high-temperature oxidation at 2700°C.
4. Thermal properties
1) Temperature resistance range
Dry temperature resistance: -60°C~240°C (conventional type);
The high-temperature type can reach more than 1600°C (e.g. chemical vapor deposition nanocoating).
2) Thermal conductivity
High thermal conductivity (approx. 490 W/(m·K)) makes it suitable for scenarios where heat dissipation is required (e.g., electronic devices).
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