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首页> 外文会议>International Workshop on Advanced Metallic Materials and Processing Techniques for Aeronautical Applications; 20051118-20; Nanjing(CN) >Structure and properties of electrodeposition RE-Ni-W-B-B_4C-PTFE composite coating
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Structure and properties of electrodeposition RE-Ni-W-B-B_4C-PTFE composite coating

机译：电沉积RE-Ni-W-B-B_4C-PTFE复合涂层的结构与性能

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摘要

The components, surface and cross sectional morphologies, and the effects of heat treatment temperature on phase structure, hardness, abrasion resistance and oxidation resistance of pulse electrodeposition RE-Ni-W-B-B_4C-PTFE composite coatings, were all investigated. The results show that W and B contents increase in the RE-Ni-W-B composite coating by using pulse electrodeposition. RE, PTFE and B_4C particles can be co-deposited into the Ni-W-B composite coating, but the amount is very little. X-ray diffraction analysis displays that the RE-Ni-W-B- B_4C-PTFE composite coating is mainly amorphous, partially crystallized as-deposited, but it turns into crystalline state and PTFE in the coatings will decompose after the heat treatment temperature is higher than 400℃. The hardness of the composite coating increases with increasing heat treatment temperature, it comes up to the highest value at 400℃. The oxidized film mass of the composite coating increases slowly when the oxidation temperature is lower than 500℃ , but it increases linearly and sharply after the oxidation temperature is higher than 600℃.
机译：研究了成分，表面和横截面形貌，以及热处理温度对脉冲电沉积RE-Ni-W-B-B_4C-PTFE复合涂层的相结构，硬度，耐磨性和抗氧化性的影响。结果表明，通过脉冲电沉积，RE-Ni-W-B复合涂层中的W和B含量增加。可以将RE，PTFE和B_4C颗粒共沉积到Ni-W-B复合涂层中，但数量很少。 X射线衍射分析表明，RE-Ni-WB- B_4C-PTFE复合涂层主要为非晶态，沉积时部分析出，但转变为结晶态，热处理温度高于室温后涂层中的PTFE分解。 400℃。复合涂层的硬度随热处理温度的升高而增加，在400℃时达到最高值。当氧化温度低于500℃时，复合涂层的氧化膜质量增加缓慢，而当氧化温度高于600℃时，其氧化膜质量线性增加且急剧增加。

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