%0 Journal Article
%T Oxidation and corrosion behaviors of NdFeB Magnet prepared by spark plasma sintering<br>放电等离子烧结NdFeB磁体的氧化和腐蚀行为
%A YUE Ming
%A LIU Weiqiang
%A WANG GongPing
%A ZHANG Jiuxing
%A LI Tao Beijing University of Technology
%A Beijing University of Science
%A Technology Beijing
%A <br>岳明
%A 刘卫强
%A 王公平
%A 张久兴
%A 李涛
%J 材料研究学报
%D 2004
%I 
%X Anisotropic NdFeB magnet was prepared by spark plasma sintering(SPS)technique. Magnet with same composition was produced using conventional sintering method for comparison. The electrochemical properties in electrolytes and reaction kinetics in oxidizing environments of the magnets were studied. The microstructure and compositions of the magnets were observed with scanning electron microscope and energy dispersive X-ray detector. Compared with conventional sintered NdFeB maggnet,the SPS processed magnet has an original microstructure,i.6.the grain size of the Nd_2Fe_(14)B main phase is fine and uniform,and the fine Nd-rich phase does not form along the grain boundaries of main phase,but agglomerates into the triple junctions.Therefore,the pathways for corrosion propagation are restricted and the inter-granular corrosion process is suppressed effectively. As a result. the SPS NdFeB magnet possesses an excellent corrosion resistance.
%K materials failure and protection
%K corrosion resistance
%K spark plasma sintering(SPS)
%K NdFeB magnet<br>材料失效与保护
%K 耐腐蚀性
%K 放电等离子烧结
%K NdFeB磁体
%K 放电等离子烧结
%K 磁体
%K 氧化
%K 腐蚀行为
%K spark
%K plasma
%K sintering
%K NdFeB
%K Magnet
%K corrosion
%K 耐腐蚀性能
%K 过程
%K 晶间腐蚀
%K 发生
%K 显微组织结构
%K 晶界
%K 分布
%K 晶粒边界
%K 富钕相
%K 均匀
%K 晶粒细
%K 显微组织特征
%K 传统烧结
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=3A12E8B7EB4667BE&yid=D0E58B75BFD8E51C&vid=13553B2D12F347E8&iid=0B39A22176CE99FB&sid=ED01F5AE50BE09C0&eid=C5F8B8CB20F1B3D8&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=2&reference_num=8