Effect of Oxygen Content on CoNiCrAlY Powders Oxidation Behavior

摘要：

　　CoNiCrAlY powders with similar granulometry and chemical composition, but differ ent oxygen content were prepared by vacuum inner gas atomization.The oxidation behavior of powder at 1000 ℃ was investigated by mass gain and rate measurements, X-ray diffraction, scanning elec tron microscope and energy spectrum analysis.The results show that the change of mass gain and rate increase obviously with the time increasing; their re lationship is linear at the former stage and parabolic at the later stage.The formed oxide consisted of Al203was detected by XRD after 16h.the intensity of its diffraction peaks became stronger with time.The oxidation resistance of the powder depends on the concentration gradient of oxygen.

关键词： CoNiCrA1Y powder mass gain oxidation rater concentration gradient

作者: Shu-ting Zhang Hui Wang Wei-wei Wan Yao Ma Dong-hai Guo

作者单位: Institute of Metal Materials of Beijing General Research Institute of Mining & Metallurgy,Beijing 100060

会议类型: 国际会议

会议名称: The 12th China-Russia Symposium on Advanced Materials and Technologies(第十二届中俄双边新材料新工艺国际会议)

会议地点: 昆明

会议语种:英文

页码: 526-529

在线出版日期: 2013-11-19（万方平台首次上网日期，不代表论文的发表时间）