Laves相Ta-Cr系合金的高温抗氧化性研究进展

Research Progress in High Temperature Oxidation Resistance of Laves Phase Ta-Cr Base Compounds

Laves相Ta-Cr系合金以其熔点高、适当的密度和良好的高温力学性能成为新型候选高温结构材料之一。综述了Laves相TaCr_2的氧化机制以及提高抗氧化性的方法,着重评述了掺杂、活性元素效应以及涂层保护方面的研究进展,指出了存在的问题及今后的研究方向。

Laves phase Ta-Cr based compounds are important potential high temperature structural materials due to their high melting temperature, moderate density and good high temperature mechanical propertis. The research on oxidation mechanism and the method of enhancing the oxidation resistance of Laves phase Ta-Cr based compounds are reviewed, including the progress in the aspects of doping, active element efiects and protective coatings. The problems existing in the field and the development trend of the future research are also pointed out.