TaC coating is a kind of tantalum carbide (TaC) coating prepared by physical vapor deposition technology, it has the following characteristics:
1. High hardness: TaC coating hardness is high, usually can reach 2500-3000HV, is an excellent hard coating.
2. Wear resistance: TaC coating is very wear-resistant, which can effectively reduce the wear and damage of mechanical parts during use.
3. Good high temperature resistance: TaC coating can also maintain its excellent performance under high temperature environment.
4. Good chemical stability: TaC coating has good chemical stability and can resist many chemical reactions, such as acids and bases.
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碳化钽涂层物理特性物理特性 Physical properties of TaC coating |
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密度 / Density |
14.3 (g/cm³) |
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比辐射率 / Specific emissivity |
0.3 |
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热膨胀系数 / Thermal expansion coefficient |
6.3 10-6/K |
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努氏硬度 / Hardness (HK) |
2000 HK |
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电阻 / Resistance |
1×10-5 Ohm*cm |
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热稳定性 / Thermal stability |
<2500℃ |
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石墨尺寸变化 / Graphite size changes |
-10~-20um |
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涂层厚度 / Coating thickness |
≥20um typical value (35um±10um) |
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