GENERAL CORROSION AND STRESS CORROSION OF AZ91D IN TWO SALT SOLUTIONS AND AIR
摘 要
分别在pH值为6的0.60mol/L NaCl,0.60mol/L NaNO3溶液和空气介质中对AZ91D压铸镁合金进行了一般腐蚀和慢应变速率试验.结果表明:该合金发生的一般腐蚀或应力腐蚀都具有明显的离子选择性,在含Cl-的溶液中一般腐蚀较严重,在含NO-3的溶液中应力腐蚀更为明显.该合金在实验室空气介质中不易发生应力腐蚀.应变速率是该合金发生应力腐蚀的又一重要参数,当应变速率低于8.33×10-5s-1时,该合金在两种溶液中均发生应力腐蚀,在4.17×10-5s-1的应变速率下,应力腐蚀最为严重,应力腐蚀是阳极溶解和氢致开裂共同作用的结果.
Abstract
The corrosion test and slow strain rate test of die cast AZ91D magnesium alloy in 060mol/L NaCl and NaNO3 solutions at pH 6 as well as in air were carried out.The selectivity of anions for general corrosion and stress corrosion of AZ91D was obvious.The general corrosion was easier in the presence of Cl-,while the stress corrosion was more severe with the presence of NO-3.Stress corrosion did not occurr in laboratory stationary air.The strain rate was another important parameter for stress corrosion.The stress corrosion of AZ91D took place only when the strain rate was less than 8.33×10-5s-1 in NaNO3 or NaCl solution,and the stress corrosion was the most severe when the strain rate was equal to 4.17×10-5s-1.The stress corrosion was caused by anodic dissolution along with hydrogen embrittlement.
中图分类号 TG172.9
所属栏目 试验研究
基金项目 国家"十五"攻关项目,编号2001BA311A04-2
收稿日期 2006/1/18
修改稿日期 2006/4/3
网络出版日期
作者单位点击查看
引用该论文: WANG Lu-ke,WANG Zhen-jia,MA Quan-you,LI Pei-jie. GENERAL CORROSION AND STRESS CORROSION OF AZ91D IN TWO SALT SOLUTIONS AND AIR[J]. Corrosion & Protection, 2006, 27(12): 599~603
被引情况:
【1】吉先武,邓承佯,熊懿,吴根林,张伟, "飞机铸造镁合金件螺栓孔的开裂原因",腐蚀与防护 37, 171-174(2016)
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】郑明毅,吴昆,乔晓光,等.镁系准晶与高性能镁合金[J].材料科学与工艺,2004,12(6):666-670.
【2】刘正.镁基轻质合金理论基础及应用[M].北京:机械工业出版社,2002,9:143-145.
【3】曾华梁.电镀工艺手册[M].北京:机械工业出版社,1997.
【4】曾荣昌,柯伟,徐永波,等.Mg合金的最新进展及应用前景[J].金属学报,2001,37(7):673-685.
【5】马全友.压铸镁合金AZ91D在盐溶液中的腐蚀行为研究[D].清华大学机械工程系,2004.
【6】肖纪美.应力作用下的金属腐蚀[M].北京:化学工业出版社,1990.
【2】刘正.镁基轻质合金理论基础及应用[M].北京:机械工业出版社,2002,9:143-145.
【3】曾华梁.电镀工艺手册[M].北京:机械工业出版社,1997.
【4】曾荣昌,柯伟,徐永波,等.Mg合金的最新进展及应用前景[J].金属学报,2001,37(7):673-685.
【5】马全友.压铸镁合金AZ91D在盐溶液中的腐蚀行为研究[D].清华大学机械工程系,2004.
【6】肖纪美.应力作用下的金属腐蚀[M].北京:化学工业出版社,1990.
相关信息