Microstructural Characterization of Novel Ni-Containing Nd-Fe-B Strips by Strip Casting

作     者：李成栋 朱学新 石力开 

作者机构：National Engineering Research Center for Non- Ferrous Metal Composites General Research Institute for Non- Ferrous Metals Beijing 100088 China 

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

年 卷 期：2006年第24卷第1期

页      面：85-88页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0708[理学-地球物理学] 0802[工学-机械工程] 0703[理学-化学] 080201[工学-机械制造及其自动化] 

基　　金：ProjectsupportedbyState‘973’Program(G2000067200) PostdocFoundationofChina,andYouthFoundationofGRINM 

主　　题：Nd-Fe （Ni, Co, Al）-B strip casting columnar crystals novel microstructure rare earths 

摘      要：The characteristics of novel Nd-Fe （Ni, Co, Al ）-B microstructure prepared by strip casting technique were studied. The novel microstructure was observed using scanning electron microscope （SEM） and transmission electron microscope （TEM）. Along the direction of heat flow, there are two kinds of different microstructures. Close to the wheel side, there is a thick layer containing many polygonal Nd2Fe14B grains. Near the free surface side, however, there are relative uniform platelike Nd2Fe14B grains whose growth direction is not completely the direction of the heat flow during solidification. The formation of the novel microstructure is presumed to be the contribution of the special temperature field and Ni component.