摘要
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。
The corrosion resistance of sintered Nd-Fe-B alloy prepared by HD and CG processes were investigated in HCl and Na（OH） solution and saturated salt solution,and the microstructure of samples prepared by two kinds of processes were analyzed. Results show that for all the samples in HC1,Na（OH） and saturated salt solution,the corrosion rate is faster in the first 8 h,but then becomes slower. The causticity of HC1 solution for sintered Nd-Fe-B alloy is stronger than that of Na（OH） and saturated salt solution. The corrosion resistance of alloy samples by HD is superior to ones by CG,and the corrosion resistance of alloy samples with no remanence is superior to ones with remanence.
出处
《稀有金属与硬质合金》
CAS
CSCD
北大核心
2014年第5期24-27,共4页
Rare Metals and Cemented Carbides
基金
四川省科技厅项目(2012JY0045
2011SZZ029
2012SZZ025
2013SZZ024)
四川省教育厅项目(12zb260
14ZA0253)
绵阳市科技局项目(12J005)
绵阳师范学院科研项目(QD2013A01
2011A03)
关键词
烧结Nd-Fe-B合金
耐腐蚀性
氢破碎
常规工艺
sintered Nd-Fe-B alloy
corrosion resistance
hydrogen decrepitation
conventional process
