摘要
采用熔体快淬及晶化处理工艺制备Nd11Fe72-xCo8V1.5CrxB7.5(x=0,1)纳米晶合金。研究了添加Cr对合金晶化行为和磁性能的影响。结果表明,添加Cr提高了软磁相α-Fe和硬磁相Nd2Fe14B的形成温度,降低了硬磁相Nd2Fe14B的居里温度。同时,添加Cr可细化两相晶粒,提高内禀矫顽力,从而提高最大磁能积。
The influence of Cr addition on the crystallization behavior and magnetic properties of melt-spun Nd11Fe72-xCo8V1.5 CrxB7.5 (x = 0, l) nanocomposite alloys have been studied. The results show that Cr addition can increase the forming temperature of α-Fe and Nd2Fe14B phases, decrease the Curie temperature of hard magnetic phase Nd2Fe14B. The magnetic properties of the bonded magnets are obviously improved by the Cr addition. The intrinsic coercivity (jHc) and maximum magnetic energy product ((BH)max) are increased from 780 kA/m and 68 kJ/m3 for x = 0 to 903.5 kA/m and 71 kJ/m3 for x = 1, respectively. The addition of Cr element shows significant advantage in reducing grain size and increasing the intrinsic coercivity.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2005年第7期1051-1054,共4页
Rare Metal Materials and Engineering
基金
国家高技术研究发展计划(2002AA302602-2)
上海市纳米科技产业发展促进中心资助
关键词
纳米复合
快淬
亚稳相
磁性能
nanocomposite
melt spinning
metastable phase
magnetic properties
