TiAlZr合金及其热喷涂Ni-Cr合金涂层高温微动磨损的研究

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基金项目:

核燃料及材料国家级重点实验室基金(51481070104QT2201)资助

Investigation on High Temperature Fretting Wear Behaviour of Ni-Cr Coatings on TiAlZr Alloy

⒈Key Laboratory of Advanced Technologies of Materials, Ministry of Education of China, Southwest Jiaotong University, Chengdu, 610031, China;
2. National key Laboratory of Nuclear Fuel and Materials, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 对TiAlZr合金及其热喷涂Ni-Cr合金涂层的高温微动磨损性能进行了对比研究。不同温度下的微动磨损实验结果表明:在滑移区,温度对微动磨损的影响十分显著,TiAlZr合金抗微动磨损能力随着温度上升而急剧下降,热喷涂Ni-Cr合金涂层抗高温微动磨损能力随着温度上升而增强。在400℃时,由于氧化膜快速生成的原因,热喷涂Ni-Cr合金涂层具有优异的抗高温微动磨损特性。
- 微动磨损 /
- 高温 /
- 滑移区 /
- TiAlZr合金 /
- 热喷涂Ni-Cr合金涂层
Abstract: TiAlZr alloy and its thermal spraying Ni-Cr coatings are tested on the fretting wear machine and investigated comparatively at different temperatures. It is showed that when the fretting is in the gross-slip regime, temperature has great effect on the fretting wear. With temperature increasing, in the gross-slip regime, wear-resistant capability of TiAlZr titanium alloy decreases; however, that of thermal spraying Ni-Cr coatings, which is excellent particularly at 400℃ because of oxide films formation, increases. Frictional properties are improved with thermal spraying Ni-Cr coatings on TiAlZr alloy substrate.
- Fretting wear /
- High temperature /
- Gross-slip regime /
- TiAlZr alloy /
- Thermal spraying Ni-Cr coatings