TaC coated graphite pipe joint rings are composed of graphite substrate and TaC coating. This type of joint ring is often used in pipeline connections with high temperature, corrosion and strict sealing requirements. The surface of the joint ring is coated with a layer of tantalum carbide (TaC) coating. TaC coating has excellent high temperature stability, hardness and corrosion resistance, which can enhance the durability and sealing performance of the joint ring.
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) |
Ningbo VET Energy Technology Co., Ltd is a high-tech enterprise focusing on the production and sales of high-end advanced materials, the materials and technology covering graphite, silicon carbide, ceramics, surface treatment and so on. The products are widely used in photovoltaic, semiconductor, new energy, metallurgy,etc..
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