2A12T4铝合金型材在苛刻海洋大气环境中的腐蚀规律
The corrosion laws of 2A12T4 aluminum alloy profiles in the harsh marine atmospheric environment
高宝亭 1冯超 1孙海波 1刘杰1
作者信息
- 1. 东北轻合金有限责任公司,黑龙江 哈尔滨 150060
- 折叠
摘要
采用室内周期性浸泡的模拟试验方法,研究了2A12T4 铝合金型材在苛刻海洋大气环境中的腐蚀行为及电化学规律.试验结果表明,在干燥温度为60℃,浸泡在质量分数为3.5%的氯化钠溶液的条件下,随着时间的延长型材出现明显的点蚀现象和较重的层片状剥蚀,腐蚀失重规律符合幂指数规律,腐蚀电位先降低后升高再降低最后趋于稳定.
Abstract
The corrosion behavior and electrochemical laws of 2A12T4 aluminum alloy profiles in harsh marine atmospheric environment were studied with the indoor simulation ex-periment of periodic immersion method.The experiment was conducted at drying temperature of 60℃and in the soaking solution of sodium chloride with wt 3.5%.The results show that significant pitting and heavy flaky erosion appear with the extension of time.The law of cor-rosion weight loss conforms to the power-law.The corrosion potential first decreases,then in-creases,then decreases,and finally stabilizes.
关键词
2A12T4铝合金/型材/干湿周浸/腐蚀/电化学规律Key words
2A12T4 aluminum alloy/profile/alternate immersion/corrosion/electro-chemical law引用本文复制引用
出版年
2024
NETL
NSTL
万方数据