Ti—Cr—Si硅化物涂层结构及裂纹扩展

Microstructure and Crack Propagation of Ti-Cr-Si Silicide Coatings on the Niobium Alloy C-103

摘要:

分析研究了Ｃ－１０３铌合金改性Ｔｉ－Ｃｒ－Ｓｉ保护涂层氧化过程中结构的变化以及裂纹扩展过程。结果表明，涂层表面玻璃态氧化物性质、涂层主体中硅含量以及低硅化物的生长和其力学性能决定了涂层中裂纹的扩展行为。

Abstract:

Microstructural variation and crack propagation of modified Ti Cr Si silicide coatings on the niobium alloy C 103 during oxidation at high temperatures in air have been studied. The results show that the crack propagation behavior is commonly determined by superficial glass phase, the silicon content of the body coating, and the growth and mechanical properties of low valent silicide.