摘要
针对镁及其合金由于易腐蚀限制了其广泛使用问题,选用环保型缓蚀剂,利用微弧氧化技术对镁合金进行预处理,采用开路电位、极化曲线、交流阻抗、浸泡腐蚀等方法研究了不同浓度十二烷基苯磺酸钠对微弧氧化预处理镁合金的缓蚀效果,同时用扫描电子显微镜对各样品的腐蚀形貌进行了观察。结果表明,十二烷基苯磺酸钠(SDBS)缓释效率最好,达到61.95%。在1.5 g/L添加量条件下,样品表面腐蚀形貌基本消失。浸泡腐蚀与电化学腐蚀规律一致。
Magnesium and its alloys have limited their widespread use because of their corrosion.The environmental corrosion inhibitors were selected for the characteristics of magnesium alloys.The magnesium alloys were pretreated first by the micro-plasma technology.The corrosion inhibition effect of sodium dodecylbenzene sulfonate on magnesium alloys at different concentrations was studied,using open circuit potential,potentional dynamic curve,impedance spectroscopy and immersed corrosion.The surface morphology of blank sample and corrosion inhibitor-immersed sample were performed by scanning electronmicroscope.The results showed that,sodium dodecylbenzene sulfonate solution reached 61.95%,and the corrosion inhibition effect was the best.When the additive was 1.5 g/L,the corrosion surface was disappeared basically.The results of soak corrosion are consistent with electrochemical corrosion.
作者
王丽
顾威
付文
黄燕
WANG Li;GU Wei;FU Wen;HUANG Yan(College of Chemical Engineering,Guangdong University of Petrochemical Technology,Maoming 525000,China)
出处
《应用化工》
CAS
CSCD
北大核心
2020年第1期97-100,共4页
Applied Chemical Industry
基金
广东省自然科学基金项目(2017A030310663,2018A030307018,2018A0303070003)
广东省科技计划项目(2017A070713034)
广东省教育厅高校青年创新人才项目(2016KQNCX104)
茂名市科技计划项目(2019018002)
广东石油化工学院校企协同科技创新研究与实践项目
关键词
镁合金
缓蚀
十二烷基苯磺酸钠
magnesium alloy
corrosion inhibition
sodium dodecylbenzene sulfonate
