微观组织调整和稀土含量对烧结NdFeB永磁腐蚀的影响

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

3.北京工业大学材料学院,北京,100124

4.北京工业大学材料学院,北京,100124

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

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

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.

[1]	Cygan DF.;Mcnallan MJ. .CORROSION OF NDFEB PERMANENT MAGNETS IN HUMID ENVIRONMENTS AT TEMPERATURES UP TO 150-DEGREES-C[J].Journal of Magnetism and Magnetic Materials,1995(1/2):131-138.
[2]	Warren G W;Gao G;Li Q .Corrosion of NdFeB permanent magnet materials[J].Journal of Applied Physics,1991,70(10):6609-6611.
[3]	Saliba-Silva A;Faria RN;Baker MA;Costa I .Improving the corrosion resistance of NdFeB magnets: an electrochemical and surface analytical study[J].Surface & Coatings Technology,2004(2/3):321-328.
[4]	Gurrappa I;Pandian S .Corrosion characteristics of Nd-Fe-B permanent magnets in different environments[J].Corrosion Engineering Science and Technology,2006,41(01):57-61.
[5]	M. Yue;J. X. Zhang;G. P. Wang;W. Q. Liu;M. L. Zhou .Microstructure and properties of Nd-Fe-B magnets prepared by spark plasma sintering[J].Materials Science and Technology: MST: A publication of the Institute of Metals,2004(5):666-668.
[6]	Ming Yue;Jiuxing Zhang;Yaofu Xiao;Gongping Wang;Tao Li .New Kind of NdFeB Magnet Prepared by Spark Plasma Sintering[J].IEEE Transactions on Magnetics,2003(6):3551-3553.
[7]	W.Q. Liu;M. Yue;D. T. Zhang .Corrosion Behavior of Conventional and Spark Plasma-Sintered Nd-Fe-B Permanent Magnets in Different Solutions[J].Corrosion,2009(7):501-504.
[8]	Scott DW.;Liang YL.;Bounds CO.;Ma BM. .THE EFFECTS OF AVERAGE GRAIN SIZE ON THE MAGNETIC PROPERTIES AND CORROSION RESISTANCE OF NDFEB SINTERED MAGNETS[J].Journal of Applied Physics,1996(8 Pt.2a):5501-5503.

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