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择优取向对热压/热变形纳米NdFeB磁体腐蚀行为的影响

DOI: 10.11903/1002.6495.2013.090, PP. 119-124

Keywords: 纳米晶,NdFeB,电化学,XPS

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Abstract:

不同取向的热压/热变形纳米NdFeB磁体的腐蚀行为相似,但与取向轴平行截面相比,与取向轴垂直截面具有更大的局部腐蚀倾向性以及更快的溶解速率;不同取向的热压/热变形纳米NdFeB磁体均发生Nd的优先腐蚀,且与取向轴垂直截面腐蚀产物膜中O的原子分数略大;富Nd相面积分数以及晶界数的差异是导致不同取向的热压/热变形纳米NdFeB磁体腐蚀行为差异的主要原因。

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