作　　者： (曹京宜）; (张海永）; (张寒露）; (杨萌）; (陈蓉蓉）; (王君）;

机构地区： 91872部队海军涂料分析检测中心,北京102442

出　　处： 《化学试剂》 2017年第9期929-932,991,共5页

摘　　要： 以含十七氟癸基三甲氧基硅烷的无水乙醇溶液作为疏水处理液,对已覆盖锶磷化膜的镁合金样品涂层进行改性。采用扫描电子显微镜、能谱仪、静态接触角测试等方法对疏水膜层的形貌、组成及接触角等性质进行表征。采用电化学阻抗谱和动电位极化曲线对疏水膜层的耐腐蚀性能进行测定。改性后的疏水表面静态接触角值随着浸泡时间的延长而增大,其膜层表面的锶、磷和氧元素含量降低而碳元素含量大大增加,同时也新增了硅元素。随着浸泡时间的推移,疏水性表面的耐腐蚀性有了显著的提高。 In this work,an ethanol solution of heptadecafluorodecyl trimethoxysilane was used as the hydrophobic treatment solution to modify the coating of the magnesium alloy coated with strontium phosphating film.The morphology,composition and contact angle of the hydrophobic membrane were characterized by scanning electron microscopy,energy dispersive spectrometer and static contact angle measurement.The electrochemical impedance spectroscopy and potentiodynamic polarization curves were used to determine the corrosion resistance of the hydrophobic membrane. The static contact angle of modified hydrophobic surface was increased with the immersion time and the content of strontium,phosphorus and oxygen on the surface of the film was reduced and the content of carbon element is greatly increased,and the silicon element appeared.The hydrophobic surface of the corrosion resistance has been significantly improved after immersion.

关 键 词： 锶磷化膜 超疏水 抗腐蚀