一种耐高温防腐涂料的防护机制研究  

Study on the Protection Mechanism of a High Temperature Resistant Anticorrosive Coating

作　　者：孙晓峰 周开河 宋巍 李占明 郭小平 郑文茹 刘栓 SUN Xiaofeng;ZHOU Kaihe;SONG Wei;LI Zhanming;GUO Xiaoping;ZHENG Wenru;LIU Shuan(Department of Equipment Support and Remanufacturing,Academy of Army Armored Force,Beijing 100072,China;State Grid Ningbo Power Supply Company,Ningbo 315201,China;Key Laboratory of Marine Materials and Related Technologies,Zhejiang Key Laboratory of Marine Materials and Protective Technologies,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China)

机构地区：[1]陆军装甲兵学院装备保障与再制造系,北京100072 [2]国家电网宁波供电公司,浙江宁波315201 [3]中国科学院宁波材料技术与工程研究所中国科学院海洋新材料与应用技术重点实验室浙江省海洋材料与防护技术重点实验室,浙江宁波315201

出　　处：《中国材料进展》2022年第11期947-953,共7页Materials China

基　　金：国家自然科学基金资助项目(41506098);中国科学院海洋新材料与应用技术重点实验室开放课题资助项目(2020K02)。

摘　　要：以球形铝粉为主要防腐颜料,制备了一种水性磷酸盐耐高温防腐涂料(牌号为ZK052),该涂料具有优异的防腐和耐高温-盐雾性能。通过电化学测试、高温-盐雾加速试验和腐蚀形貌表征,探究该涂料对碳钢基底的耐高温防腐机制,并对比研究该涂料与国外知名Sermetel W水基含铝耐高温防腐涂料的耐温性和耐蚀性。结果表明,ZK052涂层和Sermetel W涂层均对碳钢具有良好的耐高温防腐性能;ZK052涂层和Sermetel W涂层可同时抑制碳钢在质量分数为5%的NaCl溶液中的阳极氧化反应和阴极还原反应,将碳钢在5%NaCl溶液中的自腐蚀电流密度降低10倍。A kind of waterborne phosphate high temperature resistant anticorrosive coating(grade ZK052)was prepared in this paper,and coated spherical aluminum powder was used as pigment.The ZK052 coating exhibited excellent anti-corrosion and high-temperature salt spray resistance.The electrochemical testing,high-temperature salt spray accelerating test and corrosion morphology characterization were used to explore the high temperature resistance and corrosion resistance mechanism of the coating on carbon steel substrate.The high temperature resistance and corrosion resistance of ZK052 and Sermetel W water-based coatings coated on Q235 carbon steel were compared.Results indicated that ZK052 coating and Sermetel W coating exhibited good high temperature resistance and corrosion resistance to Q235 carbon steel.Both ZK052 coating and Sermetel W coating could inhibit both anodic oxidation and cathodic reduction of carbon steel in 5wt%NaCl solution,and reduce the self-corrosion current density of carbon steel in 5wt%NaCl solution by 10 times.

关 键 词：水性涂料 铝粉 高温防护 电化学腐蚀 失效 

分 类 号：TQ637[化学工程—精细化工]