微观组织调整和稀土含量对烧结NdFeB永磁腐蚀的影响  

Corrosion behavior of sintered NdFeB permanent magnet with modified microstructure and different rare earth content

作　　者：衣晓飞 刘卫强[2] 岳明[2] 张东涛[2] 

机构地区：[1]安徽大地熊新材料股份有限公司,安徽231500 [2]北京工业大学材料学院,北京100124

出　　处：《功能材料与器件学报》2010年第5期502-506,共5页Journal of Functional Materials and Devices

基　　金：国家自然科学基金(50371002);高等学校博士点科研基金(20091103120024);科研基地-科技创新平台-青年科学研究创新平台项目(X1009001201003)

摘　　要：采用放电等离子烧结技术(SPS)制备了不同稀土含量的新型烧结NdFeB磁体,为了对比,采用传统烧结工艺制备了相同成分的磁体。测量了磁体在高压湿热环境的腐蚀行为。结果表明SPS磁体的耐腐蚀性明显优于传统烧结磁体,而且随着稀土含量的降低,烧结NdFeB磁体的耐腐蚀性能显著提高。Sintered NdFeB magnets with different rare earth content were prepared by Spark Plasma Sintering technique.Magnets with same composition were produced using conventional sintering method for comparison.The corrosion behavior of the magnets in the autoclave were investigated.Compared with conventional sintered NdFeB magnets,the SPS magnets process better corrosion resistance.The sintered NdFeB magnets exhibit excellent corrosion resistance with the reduction of rare earth content.

关 键 词：放电等离子烧结 烧结NdFeB永磁 高压加速腐蚀 微观组织调整 

分 类 号：TG178[金属学及工艺—金属表面处理]