硝酸含量对5083-H116铝合金板材晶间腐蚀的影响

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英文篇名：Effect of Nitric Acid Concentration on Intergranular Corrosion of 5083-H116 Aluminum Alloy Plates 作者：杨鸿驰 ; 陆科呈 ; 刘俊生 ; 周文标 英文作者：YANG Hongchi;LU Kecheng;LIU Junsheng;ZHOU Wenbiao;Alnan Aluminium Inc.; 关键词：晶间腐蚀 ; 5083-H116铝合金板材 ; 硝酸 ; 质量损失 英文关键词：intergranular corrosion;;5083-H116 aluminum alloy plate;;nitric acid;;mass loss 中文刊名：FSYF 英文刊名：Corrosion & Protection 机构：广西南南铝加工有限公司; 出版日期：2018-02-15 出版单位：腐蚀与防护 年：2018 期：v.39;No.340 语种：中文; 页：FSYF201802009 页数：3 CN：02 ISSN：31-1456/TQ 分类号：42-43+48

摘要

在不同含量硝酸溶液中对6mm厚5083-H116铝合金板材进行晶间腐蚀试验,通过测量质量损失的方法来衡量其晶间腐蚀敏感性。结果表明:随着硝酸含量降低,5083-H116铝合金板材的晶间腐蚀倾向变大;当硝酸稀释至质量分数为51%时,质量损失已不满足≤15mg/cm2的标准要求。
        Intergranular corrosion test was carried out for 5083-H116 aluminium alloy plates with thickness of 6 mm in nitric acid solution with different concentrations.The susceptibility to intergranular corrosion of 5083-H116 aluminium alloy plates was evaluated by mass loss method.The results show that the tendency to intergranular corrosion became large with the decrease of nitric acid concentration for 5083-H116 aluminium alloy plates.When nitric acid was diluted to 51% of mass fraction,the mass loss could not meet the standard requirement of no larger than 15 mg/cm2.

引文

[1]刘国元.晶间腐蚀评价标准ASTM G67国内试验条件适应性研究[J].热加工技术,2014,43(12):90-91.