Oxidation behavior of single crystal TMS-82+ superalloy in air

摘要：

The oxidation behavior of the single crystal Ni-based superalloy TMS-82+ was studied under cyclic condition at 900 and 1 000 ℃ for 200 h in air.The oxidation kinetics for the superalloy at both exposure temperatures was explained by the subparabolic relationship.The results show that increasing the exposure temperature from 900 to 1 000 ℃,the amounts of α-Al2O3,(Ni,Co)Al2O4 and NiCr2O4 increase,resulting in a higher mass gain.The oxides consist of (Ni,Co)O,CrTaO4,AlTaO4,Cr2O3,θ-,- α-Al2O3 and (Ni,Co)Al2O4 in the specimen at 900 ℃,but NiCr2O4 spinel forms for the specimen exposed at 1 000 ℃ except the above mentioned oxides.A continuous α-Al2O3 layer is responsible for a slow growth rate of the scale after an initial rapid oxidation of NiO.

关键词： single crystal Ni-based superalloy oxidation behavior microstructure scale

作者: WU Ying SONG Gui-ming ZHOU Shao-xiong T.NARITA

作者单位: Central Iron and Steel Research Institute,Beijing 100081,China;Advanced Technology and Materials Co Fundamentals of Advanced Materials,Delft University of Technology,Kluyverweg 1,2629 HS Delft,Netherl Central Iron and Steel Research Institute,Beijing 100081,China;Advanced Technology and Materials Co Research Group of Interface Control Engineering,Graduate School of Engineering,Hokkaido University,K

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）