Interface geometry evolution during oxidation of turbine blades and vanes systems

J.-M. DORVAUX; M. POULAIN; C. RIO; P.-Y THERY

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Interface geometry evolution during oxidation of turbine blades and vanes systems

机译：涡轮叶片和叶片系统氧化过程中界面几何结构的演变

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The adhesion of thermal barrier coatings which protect HP vanes and blades is primarily determined by the bond-coat grit blasting performed before zirconia deposition. This grit-blasting step induces a roughness favourable for the mechanical anchorage of the ceramic layer. But the ceramic/metal interface topography evolves in service conditions[l], due in particular to bond-coat creep effects, related to the formation of the thermally grown oxide - alumina - and to the correlated bond-coat aluminium depletion. The undulations amplitude

机译：保护HP叶片和叶片的隔热涂层的粘附力主要由沉积氧化锆之前进行的粘结层喷砂处理决定。该喷砂步骤引起有利于陶瓷层的机械锚固的粗糙度。但是，陶瓷/金属界面的形貌在使用条件下不断发展[1]，特别是由于与热生长氧化物-氧化铝的形成有关的粘结-涂层蠕变效应，以及相关的粘结-涂层铝消耗。起伏幅度

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《ONERA Scientific and Technical Activities》 |2006年第2006期|p.7|共1页
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J.-M. DORVAUX; M. POULAIN; C. RIO; P.-Y THERY;
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Interface geometry evolution during oxidation of turbine blades and vanes systems

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