航天航空用难熔金属材料的研究进展

Research Development of Refractory Metal Materials Used in the Field of Aerospace

综述了航天航空用难熔金属钨、钼、钽、铌、铼和其合金及其涂层在高温结构研究方面的现状和应用情况,对航天用难熔金属合金的种类、力学性能、涂层的性能、制备方法作了介绍。难熔金属主要用于火箭发动机和航天器结构件,其中钨、钼及其合金单晶应用于空间动力系统。难熔金属及其合金的使用温度高低顺序与材料熔点的顺序相同。

The research states and applications of refractory metals tungsten,molybdenum,tantalum,niobium and rhenium and their alloys and coatings used in spaceflight industry,have been summarized.The kinds,mechanical properties and preparation technologies of the alloys and performances of their coatings have also been introduced.The refractory metals are mainly used as rocket engine and spacecraft structural parts.And the tungsten,molybdenum and their crystals are also used in space dynamical system.The order of the service temperature from high to low in refractory metals and their alloys is same as the melting point order of materials.