摘要
综述了国内外粘接层氧化行为的研究进展,介绍了粘接层氧化动力学,热生长氧化物(TGO)组成、结构和形成规律,以及亚稳态Al2O3向稳态Al2O3的转变规律,分析了MCrAlY粘接层及基体合金中的各种元素对TGO形貌和成分的影响,指出了深入研究粘接层氧化行为的方法以及热障涂层性能的改善措施。
Formation and evolution of the thermally grown oxides （TGO） have great effect on the properties of thermal barrier coatings （TBCs）, suggesting a sticking point for analyzing TBCs failure and prolonging the life of TBCs. The research progress of the oxidation behavior of TBCs worldwide is summarized, including oxidation kinetics of bond coating（ BC ）, composition, structure and evolution of TGO, and transformation from metastable AI203 to stable A1203. Effects of elements from BC on the morphology and structure of TGO is analyzed, as well as the elements dif- fused from substrate. Idea for research of BC-oxidation behavior and methods for properties-improvement of TBCs are indicated.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2014年第2期7-12,共6页
Aerospace Materials & Technology
基金
国家863计划资助项目(2012AA03A511)
工信部科技专项资助项目(2012ZX04007-021-03)
关键词
热障涂层
氧化行为
粘接层
热生长氧化物
Thermal barrier coatings, Oxidation behavior, Bond coating, Thermally grown oxide
