Atmospheric corrosion of aluminium alloy 2024-T3 exposed to salt lake environment in Western China

Atmospheric corrosion of aluminium alloy 2024-T3 exposed to salt lake environment in Western China
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我国西部盐湖环境中2024-T3铝合金的大气腐蚀

DOI:
10.1016/j.corsci.2012.02.015
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发表时间:
2012-06
期刊:
影响因子:
8.3
通讯作者:
W. Ke
W. Ke
中科院分区:
材料科学1区
文献类型:
--
作者:
B.B. Wang;Z.Y. Wang;W. Han;W. Ke

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采用失重法、腐蚀形貌和腐蚀产物分析等方法研究了2024-T3铝合金在盐湖环境中6年的大气腐蚀行为。结果表明,在前20年中,质量损失以较高的速率增加,并随着时间的推移趋于稳定。用XRD分析了腐蚀产物的主要晶相组成[Mg 1-xAlx(OH)2]x+Clx-·mH 2 O。除点蚀和晶间腐蚀外,应力腐蚀裂纹(SCC)在所有试验期间均观察到。分析认为,造成腐蚀的主要原因是盐颗粒(主要是MgCl 2·6 H2O)的沉积和干旱气候。
Atmospheric corrosion of aluminium alloy 2024-T3 exposed to salt lakes environment for 6years was investigated by weight loss, analysis of morphology and corrosion products. The results showed an increase in the mass loss with a high rate in the first 2years, and tended to stabilise over time. A main crystalline component of corrosion products, [Mg1-xAlx(OH)2]x+Clx-·mH2O, was determined by XRD. Besides pitting and intergranular corrosion, stress corrosion cracks (SCC) were observed in all test periods. According to the analysis, causes for the corrosion behaviour were attributed to the deposition of salts particles (mainly MgCl2·6H2O) and the arid climate.
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发表时间: 2004-07-01
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