Laser Cladding Synthesis of Ta2O5 Coatings on a Ta Substrate

International Conference on Materials Sciences and Nanomaterials

材料科学;物理学

Zhang, H.^1 ; Xie, H.^1 ; Yue, T.M.^1

Advanced Manufacturing Technology Research Centre, Department of Industrial and Systems Engineering, Hong Kong Polytechnic University Hong Kong, Hong Kong^1

关键词: Coating-substrate interface;    Graded microstructures;    Single phase;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/230/1/012032/pdf
DOI  :  10.1088/1757-899X/230/1/012032

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A five-layer overlaid Ta2O5dense ceramic coating was successfully fabricated on a pure Ta substrate using laser cladding. The coating exhibits a graded microstructure with a single phase of α-Ta2O5formed towards the top of the coating, and was metallurgically bonded to the Ta substrate. Both the coating and the coating-substrate interface region were free from porosity. The development of the coating's microstructure was discussed based on an existing Ta-O phase diagram.