KINETICS OF HYDROGEN ABSORPTION IN Ti600 ALLOY

摘要：

The kinetics and mechanism of hydrogen absorption in Ti600 alloy were investigated at various temperatures (873K≤T≤1123K). The rate of hydrogen absorption and equilibrium hydrogen pressure increased with the increase of temperature. Because hydriding reaction is an exothermic reaction, solubility of hydrogen decreased with increasing temperature. The experiment results were interpreted from the time dependent hydrogen absorption curves using various rate equations to reveal the mechanism of the hydrogen absorption processes. The hydriding reaction rate constants were extracted from the time-dependent hydrogen absorption curves. The mechanism of hydriding reaction in different stages has been analyzed. It was found that the chemical reaction process dominated the hydrogen absorption process at 923K. The chemical reaction process and the three-dimensional diffusion process dominated the hydrogen absorption process at 973K or higher.

关键词： Kinetics hydriding reaction reaction mechanism rate constant

作者: XIAOLI WANG YONGQING ZHAO WEIDONG ZENG HONGLIANG HOU YAOQI WANG

作者单位: Materials School, Northwestern Polytechnical University, Shaanxi, Peoples Republic of China Northwest Institute for Nonferrous Metal Research, Shaanxi, Peoples Republic of China Beijing Aeronautical Manufacturing Technology Research Institute, Beijing, Peoples Republic of Chin

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: 863-868

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）