合金成分对铜模吸(或喷)铸Re_2Fe_(14)B/Fe_3B型纳米复合块状永磁体的影响  

Effect of alloy composition on the copper mold suction(or injection) casting Re_2Fe_(14)B/Fe_3B type nanocomposite bulk magnets

作　　者：蒋远霞[1] 潘晶[1] 刘新才[1] 姜小丽[1] 

机构地区：[1]宁波大学材料科学与化学工程学院,宁波市新型功能材料及其制备科学实验室-省部共建国家重点实验室培育基地,浙江宁波315211

出　　处：《功能材料》2013年第B12期210-216,共7页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51174121;51274125);浙江省重点科技创新团队资助项目(2010R50016-8);浙江省重大科技专项资助项目(2008C11086-1)

摘　　要：采用铜模吸(或喷)铸制备Re2Fe14B/Fe3B型纳米复合块状永磁体是一种短流程、近净成型的新方法。对该技术方法的研究涉及两种工艺途径:(1)首先利用铜模吸(或喷)铸方法制备出完全非晶块体,随后通过晶化热处理得到纳米晶块体;(2)利用铜模吸(或喷)铸方法直接制备纳米晶块体。在铜模吸(或喷)铸工艺所提供的亚快速冷却条件下,人们一直致力于通过调整合金成分来改善Re2Fe14B/Fe3B型合金的玻璃形成能力(glass-forming ability,GFA)、微观结构和磁性能。对近期这方面的研究进行了综述。Preparing Re2Fe14B/Fe3B type nanocomposite bulk magnets by copper mold suction （or injection） casting was a new kind of technology with the distinguishing features of short-cut process and near-net-shape molding. The studies for this technology involve two kinds of process approaches. One was that preparing the completely amorphous bulk alloys by copper mold suction （or injection） casting at first, then obtaining nano crystalline bulk magnets by annealing the amorphous precursors. The other was that preparing nanocomposte bulk magnets directly by copper mold suction （or injection） casting. Under the condition of sub-rapid solidifica tion provided by copper mold suction （or injection） cast, researchers have been working on improving the glass formation ability, the microstructure and the magnetic properties of Re2 Fe14 B/Fe3B type alloy by adjusting the alloy composition. In this paper, the recent studies in this field are reviewed.

关 键 词：Re.Fe14B Fe3B型合金 合金成分 玻璃形成能力 微观结构 磁性能 

分 类 号：TB332[一般工业技术—材料科学与工程]