镁合金腐蚀和控制技术的基础问题-中国材料进展

文章信息/Info

Title:: Basic Issues on the Corrosion and Control Technologies of Magnesium Alloys

作者:: 宋影伟; 宋光铃; 曾荣昌; 吴量; 韩恩厚; 1. 中国科学院金属研究所核用材料与安全评价重点实验室，辽宁沈阳 110016 2. 南方科技大学工学院，广东深圳 518055 3. 山东科技大学材料科学与工程学院，山东青岛 266590

Author(s):: SONG Yingwei; SONG Guangling; ZENG Rongchang; WU Liang; HAN En-Hou; 1. Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; 2. College of Engineering, Southern University of Science and Technology, Shenzhen 518055, China; 3. College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China et al

Keywords:: Mg alloys; pain points of Mg industry; corrosion mechanism; protective coatings; service environment; solution measures

摘要:: 耐蚀性差是制约镁合金广泛应用的瓶颈问题，行业关注的腐蚀痛点问题包括镁合金连接件的电偶腐蚀、表面防护涂层破损后易腐蚀以及镁合金在力学/化学交互作用下的腐蚀问题，分析了这些腐蚀痛点背后的原因，提出了需要进一步研究的镁合金腐蚀科学问题，包括镁合金电化学腐蚀的控制步骤、多因素耦合作用下的电偶腐蚀规律、力学/化学交互作用下的腐蚀机制、实用低成本防护涂层的构筑及响应机制等，并建议从腐蚀机理→材料→服役环境→加工制备→服役性能→表面防护→方法论等方面全方位思考，从本质上澄清镁合金的腐蚀机理，开发出低成本、高耐蚀、多功能的镁合金防护涂层，促进其广泛应用。

Abstract:: Poor corrosion resistance is a bottleneck problem that restricts the wide application of magnesium alloys. The corrosion pain points in the Mg industry include galvanic corrosion of magnesium alloy connectors, easy corrosion after surface protective coatings being damaged, and corrosion of magnesium alloys under force/chemical interaction. The reasons behind these corrosion pain points are analyzed, and the scientific problems about the corrosion of magnesium alloys are proposed, including the control steps of electrochemical corrosion, the galvanic corrosion law under multi-factor coupling, the corrosion mechanism under force/chemical interaction, the construction and response mechanism of low-cost protective coatings. Based on the comprehensive consideration of the corrosion problems of magnesium alloys from the aspects of corrosion mechanism→materials→service environment→processing→service performance→surface protection→methodology, the corrosion mechanism of magnesium alloys is clarified, and the low cost, high corrosion resistance and multi-functional protective coatings are developed to promote the wide application of magnesium alloys.