不同工艺所制备烧结Nd-Fe-B合金的耐腐蚀性研究  

Research on Corrosion Resistance of Sintered Nd-Fe-B Alloy Prepared by Different Processes

作　　者：唐杰[1] 张铭杰 王晓军[1] 赵导文 魏成富[1] 任莉萍[1] 

机构地区：[1]绵阳师范学院化学与化学工程学院,四川绵阳621000 [2]烟台正海磁性材料股份有限公司,山东烟台264006 [3]绵阳西磁磁电有限公司,四川绵阳621000

出　　处：《稀有金属与硬质合金》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)

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.

关 键 词：烧结Nd-Fe-B合金 耐腐蚀性 氢破碎 常规工艺 

分 类 号：TG178[金属学及工艺—金属表面处理]