摘要
研究了Nd10.5Pr2.5Fe80Nb1B6非晶快淬薄带在943,973和1003 K等温晶化与薄带组织和矫顽力的关系。结果表明,Nd10.5Pr2.5Fe80Nb1B6快淬薄带在943 K等温晶化所需晶化孕育时间为12 min,973 K时为5 min,而1003 K时不足5 min。Nd10.5Pr2.5Fe75NbB6在1003 K晶化25 min后所得的(Nd,Pr)2Fe14B平均晶粒尺寸为163 nm,添加Nb显著延缓了Nd10.5Pr2.5Fe80Nb1B6快淬薄带晶化后的晶粒尺寸长大。加Nb,Pr能有效提高Nd10.5Pr2.5Fe80Nb1B6的矫顽力。在973 K晶化处理19 min时得到平均晶粒尺寸为96 nm的(Nd,Pr)2Fe14B单相组织,其最大矫顽力为1616 kA.m-1。
The relationship between microstructures and coercivities of Nd10.5Pr2. 5Fe80NbB6 meh-spun ribbons, after isothermal crystallization processes at 943, 973 and 1003 K, was studied. The results showed that the crystallization in cubation duration was 12, 5 and less than 5 min at 943, 973 and The average grain size of （Nd, 1003 K respectively. Pr）2Fe14B was 163nm, ＇after at 1003 K for 25 min, growth of （Nd, Pr）2Fe14B grains. Nb and Pr increased the intrinsic magnets. The best coercive force, obtained after crystallizing at 973 its average grain size was 96 nm. for Nb retarded the The combination of coercive force of the 1616 kA·m^-1, was K for 19 min, and
出处
《中国稀土学报》
CAS
CSCD
北大核心
2008年第5期652-655,共4页
Journal of the Chinese Society of Rare Earths
基金
国家重大基础研究前期专项(2004CCA04000)
国家自然科学基金(50744014)
浙江省科技计划重点项目(2008C21046)
浙江省自然科学基金(Y406389)
江西省主要学科跨世纪学术和技术带头人培养计划资助项目(CA99110901)
宁波市科技攻关项目(2006B100054)
宁波大学王宽诚幸福基金
关键词
ND-FE-B
快淬薄带
等温晶化
矫顽力
稀土
Nd-Fe-B
melt-spun ribbon
isothermal crystallization
coercivity
rare earths
