FABRICATION OF BULK TITANIUM ALUMINIDES BY THERMAL SPRAY

摘要：

In this study we utilized two types of plasma spray processing, namely atmospheric plasma spraying (APS) and hypersonic plasma spraying (HPS) to produce structural bulk titanium aluminides. Microstructure characterisation of the deposits, their compositional changes and phase transformations were investigated using scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis. It was found that the TiAl alloyed powder particles experienced a significant phase change during both APS and HPS processes. During APS the TiAl alloyed powder particles also experienced a significant compositional change; having a considerable amount of titanium oxides. On the other hand, the compositional change during HPS was negligible. At the end of the paper, an attempt of using a low temperature spraying process, i.e. cold gas dynamic spray, was reported as an alternative coating method.

关键词： Titanium aluminides atmospheric plasma spray hypersonic plasma spray powder consolidation

作者: P.CAO B.GABBITAS D.L.ZHANG A.SALMAN

作者单位: Department of Engineering, The University of Waikato, Private Bag 3105, Hamilton, New Zealand

会议类型: 国际会议

会议名称: 第五届先进材料与加工国际会议(Fifth International Conference on Advanced Materials and Processing ICAMP-5)

会议地点: 哈尔滨

会议语种:英文

页码: 1777-1782

在线出版日期: 2008-09-03（万方平台首次上网日期，不代表论文的发表时间）