THE EFFECT OF Y ON THE OXIDATION OF Mg-Zn-Zr ALLOYS

摘要：

The effects of Y addition up to 5.13％ (in weight) to Mg-Zn-Zr alloys on oxidation behaviors under atmospheric ambient conditions were investigated in this study. Samples were heated in the ambient atmosphere at 400℃, with samples cooled to room temperature for mass measurement after some period time of cumulative exposure to obtain kinetic curves. XRD is used to analyze the mixture of oxides. Scanning electron microscopy combined with energy dispersive spectroscopy was used to study the scale microstructure and to obtain composition-depth profiles through the oxide layers. The oxidation results show that the weight gains for the alloys containing low Y concentration are obvious. The oxide films are thick and porous on the alloys containing low Y and thin and protective on alloys containing relatively high Y concentration. The addition of Y into Mg-Zn-Zr alloys results in the formation of protective film which is resistant to oxidation.

关键词： Y Mg-Zn-Zr alloys ozidization scale microstructure composition-depth profile

作者: ZHILIANG NING WEIZHONG LIANG FUYANG CAO JANFEI SUN

作者单位: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, Peoples School of Materials Science and Engineering, Heilongjiang Institute of Science and Technology, Harbi

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: 796-801

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）