海洋大气环境下镁合金腐蚀行为研究进展
Research Advances in Corrosion Behavior of Magnesium Alloy in Marine Atmospheric Environment
周慧敏 1黄须强 1孔令菲 1陈建鑫 1高飞 1刘绍红 1陈民芳 2张晋 3铁镝3
作者信息
- 1. 东北大学材料科学与工程学院,辽宁沈阳 110819
- 2. 天津理工大学材料科学与工程学院,天津 300384
- 3. 大连交通大学连续挤压教育部工程研究中心,辽宁大连 116028
- 折叠
摘要
本文综合研究了海洋大气环境下镁合金腐蚀行为的研究进展,比较分析了各种因素对腐蚀行为的影响,对当前研究进展进行总结并对未来研究方向进行展望.在海洋大气环境下,表面薄电解质溶液膜的包覆是镁合金发生电化学腐蚀的主要原因,且多发生局部腐蚀.相比于内陆大气环境,海洋大气中含有较多无机盐气溶胶颗粒,导致点蚀成为主要的局部腐蚀形式.相对湿度的升高会导致薄电解质膜厚度增加,进而加速整体腐蚀速率.随气温上升,镁合金的大气腐蚀速率线性增加,而空气中的CO2可以抑制NaCl对镁合金的侵蚀.该领域未来需更多关注具体使役环境下合金的腐蚀机理,以及各种环境因素对腐蚀行为的协同作用机制,以指导海洋用镁合金材料的设计和制备.
Abstract
The research progress of the corrosion behavior of magnesium alloy in the marine atmospheric environment was reviewed and summarized.The influencing factors on corrosion behavior were analyzed,and some perspectives on future research directions were given.In the marine atmospheric environment,the electrochemical reaction of magnesium alloy coated with thin electrolyte layer on the surface is prone to localized corrosion,and is also susceptible to the influence of environmental factors.Compared to the inland atmospheric environment,the marine atmosphere is rich in aerosol particles,which promote serious pitting corrosion of magnesium alloys.Higher relative humidity can increase the thickness of thin electrolyte layer,resulting in higher atmospheric corrosion rate of the alloy.Meanwhile,the atmospheric corrosion rate of magnesium alloy increases linearly with the increase in temperature.CO2 in the air can inhibit the erosion of NaCl to magnesium alloys.Future research in this field may focus on the revelation of corrosion mechanism in specific environment and the synergistic effect of various environmental factors on corrosion behavior,so as to guide the design and preparation of marine magnesium alloy materials.
关键词
镁合金/海洋环境/腐蚀/大气腐蚀/局部腐蚀Key words
magnesium alloy/marine environment/corrosion/atmospheric corrosion/localized corrosion引用本文复制引用
基金项目
国家重点研发计划重点专项(2022YFE0126400)
国家自然科学基金(52171235)
国家自然科学基金(51974083)
国家自然科学基金(52111540263)
辽宁省教育厅基本科研项目(LJKMZ20220856)
出版年
2024
NETL
NSTL
万方数据