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Zr對釹鐵硼磁體性能穩(wěn)定性的影響
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國家自然科學基金（20806093）；中國石油大學（華東）科研資助項目（Y071808）


Effect of Zr on High Properties Consistency of NdFeB Magnets
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    摘要:

    規(guī)模化制備高性能燒結釹鐵硼材料對磁體磁性能穩(wěn)定性提出了很高的要求。研究了Zr和Nb添加對磁體性能穩(wěn)定性的影響。結果表明：Zr添加含量增加到0.07%，磁體的燒結溫度可高達1110 ℃，晶粒不發(fā)生異常長大，矯頑力達到1021 kA/m左右，Nb的添加提高了磁體的方形度。當Nb和Zr復合添加時，制備的磁體磁性能高，性能穩(wěn)定性好，最大磁能積為403.8±4.7 kJ/m3，這主要是由于Zr的添加極大地降低了磁體對燒結溫度的敏感性

    Abstract:

    Producing on scale for sintered NdFeB magnets demands consistency of magnets. The effect of element Zr and Nb on consistency of magnets was investigated. It was found that as Zr content increased from 0 to 0.07at%, the sinter temperature of magnet could reach to 1110 ℃ with no abnormal grain growth, and coercivity increased to 1021 kA/m. And Nb addition was benefit for squareness improvement. Combined addition of Nb 0.07at% and Zr 0.07at%, the magnets showed much better properties consistency even at different positions in same furnace and the energy densities reached 403.8±4.7 kJ/m3. It was attributed that the sensitization of sinter temperature of magnets was greatly removed by Zr and Nb addition

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于濂清,黃翠翠. Zr對釹鐵硼磁體性能穩(wěn)定性的影響[J].稀有金屬材料與工程,2009,38(3):465~467.[Yu Lianqing, Huang Cuicui. Effect of Zr on High Properties Consistency of NdFeB Magnets[J]. Rare Metal Materials and Engineering,2009,38(3):465~467.]
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  • 收稿日期:2008-02-11
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