【摘要】 Nb-Si基合金被认为是替代Ni基超高温合金的理想候选材料。然而，其脆性大、高温氧化性能差等缺陷极大地限制了其发展和应用。合金化和表面抗氧化涂层可以有效地提高Nb-Si基合金的高温氧化性能和使用寿命。本文综述了Ti、Zr、Cr、B等元素和系列抗氧化涂层对Nb-Si基合金的力学和氧化性能的影响，阐述了合金的氧化失效机制，总结了合金基体和涂层的微观组织和氧化行为研究进展。最后，对Nb-Si基合金未来的研究方向和发展趋势做了建设性的建议及展望。更多还原

【Abstract】 Nb-Si based alloys are considered to be an ideal candidate to replace Ni based ultrahigh temperature alloys. However, their brittleness and inferior high temperature oxidation performance greatly restrict their development and application. Alloying and surface oxidation-resistant coating can effectively improve the high temperature oxidation properties and prolong the service life of Nb-Si based alloys. In this research, the effects of Ti, Zr, Cr, and B elements and a series of anti-oxidation coatings on the mechanical and oxidation properties of Nb-Si based alloys were reviewed. The oxidation failure mechanism of the alloy was expounded. The research progress of microstructure and oxidation behavior of alloy matrix and coating was summarized. Finally, constructive suggestions and prospects were proposed for the future research direction and development trend of Nb-Si based alloys.更多还原