Rodlike disproportionation microstructure in the Pr13Fe80B7 alloys treated by conventional HDDR process
Rodlike disproportionation microstructure in the Pr13Fe80B7 alloys treated by conventional HDDR process
复制标题
DOI：
10.1063/1.3347742
复制
发表时间：
2010-04
影响因子：
3.2
通讯作者：
Jingzhi Han;Xiangpeng Kong;Shunquan Liu;Zhong Lin;Changsheng Wang;H. Du;Jinbo Yang;Yingchang Yang-Ying
中科院分区：
文献类型：
--
作者：
Jingzhi Han;Xiangpeng Kong;Shunquan Liu;Zhong Lin;Changsheng Wang;H. Du;Jinbo Yang;Yingchang Yang-Ying
通过缩短氢化还原-脱附复合（HDDR）工艺的还原时间，获得了各向异性的Pr 13 Fe 80 B7磁粉。磁化时间为30 min的磁粉的磁性能为Br=0.93 T，Mr/Ms=0.75，且沿着c轴具有高度的晶体织构，而磁化时间延长的磁粉为各向同性。在30 min的结晶产物中观察到棒状结构，并且随着结晶时间的延长而转变为球形形态。这表明，在常规HDDR粉末中，棒状的结晶组织对晶体织构的形成是非常重要的。
Anisotropic Pr13Fe80B7 magnetic powders are obtained by shortening the disproportionation time of the hydrogenation disproportionation desorption recombination (HDDR) process. The magnetic powders with a disproportionation time of 30 min have the magnetic properties of Br=0.93 T and Mr/Ms=0.75, and show a high degree of crystal texture along the c axis, whereas the magnetic powders obtained with a prolonged disproportionation time are isotropic. A rodlike structure is observed in the 30 min-disproportionation products and is transformed into spherical morphology with a prolonged disproportionation time. It suggests that the rodlike disproportionated microstructure is very important for the formation of crystal texture in the conventional HDDR powders.