Hydrogen Absorption of Nd-Fe-B Alloys

作     者：谭春林 白书欣 张虹 张家春 蔡珣 

作者机构：College of Materials Science and Chemical Engineering Zhejiang University Hangzhou 310027 China ( School of Materials Science and Engineering Shanghai Jiaotong University Shanghai 200030 China Department of Materials Engineering and Applied Chemistry National University of Defense Technology Changsha 410073 China School of Materials Science and Engineering Shanghai Jiaotong University Shanghai 200030 China . Department of Materials Engineering and Applied Chemistry National University of Defense Technology Changsha 410073 China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2004年第22卷第5期

页      面：668-672页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：ProjectsupportedbytheNaturalScienceFoundationofHunanProvince ( 0 0JJY2 0 42 ) 

主　　题：metal materials hydrogen decrepitation neodymium content surface area NdFeB rare earths 

摘      要：The technical parameters of HD process were studied, including the effects of temperature and neodymium contents on the incubation period of hydrogen absorption, hydrogen concentration and the rate of hydrogen absorbed. The results show that the incubation period is shortened and the rate of hydrogen absorbed is accelerated with rising temperature and surface area. These are attributed to the rising rate of hydrogen diffusion at higher temperature. The change of the incubation period and the rate of hydrogen absorbed have the similar trend resulted from the increasing content of the Nd-rich phase owing to the rising temperature. Moreover, the percent of the Nd-rich phase in the ingot can be calculated according to the total hydrogen weight gain.