钼及钼合金因具有高熔点、高硬度、力学性能优异等优点,被广泛应用于军工、航空和航天等领域.但钼及钼合金在高温使用时存在抗氧化、抗烧蚀和耐磨损性能较差等缺陷,严重影响了钼及钼合金的高温使用性能.研究发现,通过表面改性能有效解决上述问题.首先提出了高温应用钼及钼合金表面改性涂层需满足的基本要求,系统地综述了改性涂层在改善高温应用钼及钼合金抗氧化、抗烧蚀和耐磨损性能方面的研究进展,介绍了常见改性涂层的制备方法,并指出了目前该研究领域存在的问题及今后的发展方向.
Molybdenum and molybdenum alloys have been widely used in military, aerospace and other fields because of their high melting point, high hardness and excellent mechanical properties.However, the high temperature application properties of molybdenum and molybdenum alloys has been seriously affected by the defects such as bad oxidation resistance, low ablation resistance and poor wear resistance at elevated temperature.It is found that the surface modification can effectively solve the above problems.In this paper, the basic requirements of surface modification coating for high temperature application molybdenum and molybdenum alloy are proposed firstly.The main research progress on the improved oxidation resistance, ablation resistance and wear resistance of surface modified molybdenum and molybdenum alloys at elevated temperature is systematically reviewed.The coating preparation me-thods are introduced, and the existing problems and development prospects of research in this field are also proposed.
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