不同工艺所制备烧结Nd-Fe-B合金的耐腐蚀性研究

openalex(2014)

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Abstract
研究了氢破碎(HD)工艺和常规(CG)工艺制备的烧结Nd-Fe-B合金样品在HCl溶液、Na(OH)溶液及饱和食盐水中的耐腐蚀性,并对两种工艺所制备样品的微观形貌进行了分析。结果表明,在HCl溶液、Na(OH)溶液及饱和食盐水中,样品在前8h内的腐蚀速率均较快,随后腐蚀速率均变慢;HCl溶液对烧结Nd-Fe-B合金的腐蚀性比Na(OH)溶液、饱和食盐水强得多。氢破碎工艺制备的合金耐腐蚀性优于常规工艺制备的合金,且未充磁合金的耐腐蚀性优于充磁合金。
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Key words
nd-fe-b
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