无铬达克罗润滑防腐蚀封闭涂层的制备与性能研究  

Study on the Preparation and Properties of Lubricating and Anti-Corrosion Seal Coating on the Chromium-Free Dacromet Coating Surface

作　　者：李庆鹏[1,2,3] 张登华 杨宏强 王娜 孔祥峰[5] 管勇 刘建国 严川伟[3] 张亮[4] 殷跃军[4] 韩长智 LI Qing-peng;ZHANG Deng-hua;YANG Hong-qiang;WANG Na;KONG Xiang-feng;GUAN-yong;LIU Jian-guo;YAN Chuan-wei;ZHANG Liang;YIN Yue-jun;HAN Chang-zhi(Liaoning Provincial Key Laboratory for Synthesis and Preparation of Special Functional Materials,Shenyang University of Chemical Technology,Shenyang 110142,China;Shenyang Institute of Industrial Technology Co.,Ltd.,for Advanced Coating Materials,Shenyang 110142,China;Laboratory for Corrosion and Protection,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;Shenyang Hangda Technology Co.,Ltd.,Shenyang 110043,China;Institute of Oceanographic Instrumentation,Qilu University of Technology(Shandong Academy of Sciences),Qingdao 266001,China)

机构地区：[1]沈阳化工大学辽宁省特种功能材料合成与制备重点实验室,辽宁沈阳110142 [2]沈阳先进涂层材料产业技术研究院有限公司,辽宁沈阳110142 [3]中国科学院金属研究所金属腐蚀与防护实验室,辽宁沈阳110016 [4]沈阳市航达科技有限责任公司,辽宁沈阳110043 [5]齐鲁工业大学(山东省科学院)海洋仪器仪表研究所,山东青岛266001

出　　处：《材料保护》2021年第6期1-6,共6页Materials Protection

基　　金：2020年辽宁省教育厅科学研究经费项目(LZ2020002);2019年度教育部“春晖计划”合作科研项目资助。

摘　　要：为提高无铬达克罗涂层的润滑及耐蚀性能,采用片状铝粉为填料,PTFE为润滑填料,硅烷A-187为成膜物,制备了一种应用于无铬达克罗涂层表面的水性无铬润滑封闭涂层。通过扫描电子显微镜(SEM)、能谱(EDS)测试、中性盐雾试验、动电位极化曲线测试和电化学阻抗分析等手段对涂层的表面形貌、成分及耐蚀性能进行了表征。结果表明:制备的水性无铬润滑封闭涂层与无铬达克罗涂层结合良好,涂装后表面均匀且致密;复合涂层(无铬达克罗涂层+水性无铬润滑封闭涂层)防护体系经960 h盐雾试验后,表面无红锈产生;复合涂层与单层无铬达克罗涂层相比,腐蚀电位正移,腐蚀电流降低,腐蚀电阻增加,表明复合涂层具有较好的耐蚀性能。In order to improve the lubricating and anti-corrosion performance of the chromium-free Dacromet coating,a water-based chromium-free lubricating seal coating applied on the surface of the chromium-free Dacromet coating was prepared with using flake Al powder as filler,PTFE as lubricating filler and silane A-187 as film forming material.Subsequently,the surface morphology,composition and corrosion resistance of the coatings were investigated by scanning electron microscopy(SEM),energy dispersive spectrometer(EDS),neutral salt spray test,potentiodynamic polarization curve test and EIS analysis.Results showed that the water-based chromium-free lubricating seal coating was well combined with the chromium-free Dacromet coating,and the coating surface after painting became smoother and more compact.Moreover,there were no obvious red rust formed on the surface of the composite coating(chromium-free Dacromet coating plus water based chromium-free lubricating sealing coating)after 960 h salt spray test.In the comparation of single chromium-free Dacromet coating,the composite coating possessed more positive corrosion potential,lower corrosion current and larger corrosion resistance,indicating that the composite coating had better anti-corrosion performance.

关 键 词：无铬达克罗 润滑封闭涂层 复合涂层 盐雾 耐蚀性能 

分 类 号：TL214.6[核科学技术—核燃料循环与材料]