摘要
采用熔体快淬工艺制备了成分为Nd9.5Fe84B6.5-xPx(x=0、0.1、0.2、0.3和0.4)的快淬磁带,快淬带由硬磁相Nd2Fe14B和软磁相α-Fe组成。结果表明,P含量对合金Nd2Fe14B相晶粒取向和尺寸有显著影响。当P含量较低时,快淬带两个表面中Nd2Fe14B相晶粒存在以c轴择优取向的(00l)织构,且自由面的织构强度大于贴辊面;随着P含量的增加,织构强度下降。晶粒尺寸对P含量比较敏感,添加0.1%(原子分数)P时,有细化晶粒的作用,此时两个面中Nd2Fe14B相晶粒均较小;随着P含量的增加,晶粒开始粗化。此外,自由面中Nd2Fe14B相晶粒尺寸均大于贴辊面的,且这种差异随P含量的增加而增大。
In this study,preferential orientation and grain size were studied for Nd9.5Fe84B6.5-xPx（x=0,0.1,0.2,0.3,0.4） ribbons prepared via melt-spinning.P addition was found to be effective for the orientation of c-axis of Nd2Fe14B grains perpendicular to the ribbon plane.Both the free and wheel side of the ribbons could obtain strong c-axis crystal texture of Nd2Fe14B phase at low P content,but the texture weakened gradually with the increase of P content.Moreover,the intensity of the texture was stronger in the free side of the ribbon than that of the wheel side.The Nd2Fe14B grain size changed with P content in both side of ribbons and was smaller when P content was 0.1at%,and became coarser with the increase of P content.In addition,the Nd2Fe14B grain size in the free side was larger than that of the wheel side.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第15期2232-2234,2238,共4页
Journal of Functional Materials
基金
国家青年科学基金资助项目(51201109)
深圳市科技计划资助项目(JCYJ20120613173419904)
关键词
纳米复合永磁
P含量
织构
择优取向
nanocomposite magnets
P content
texture
preferential orientation
