低磁不锈钢表面处理工艺及防护涂层体系设计研究  

Study on Surface Treatment Process and Protective Coating System Design of Low-magnetic Stainless Steel

作　　者：徐强 亓海霞[2,3] 陈凯锋[2,3] 张黎黎[2,3] XU Qiang;QI Haixia;CHEN Kaifeng;ZHANG Lili(No.708 Research Institute of China Shipbuilding Industn Corporation,Shanghai 200030,China;Xiamen Advanced Materials Academy of Luovang Ship Material Research Institute,Xiamen 361101,China;Science and Technology on Marine Corrosion and Protection Laboratory,Qingdao 266101,China)

机构地区：[1]中国船舶集团有限公司第七○八研究所,上海201100 [2]中国船舶重工集团公司第七二五研究所厦门材料研究院,福建厦门361101 [3]中国船舶重工集团公司第七二五研究所海洋腐蚀与防护重点实验室,山东青岛266101

出　　处：《材料开发与应用》2021年第6期31-35,共5页Development and Application of Materials

摘　　要：研究了不同表面处理工艺对低磁不锈钢基材自身耐蚀性能及涂层附着性能的影响,通过电化学阻抗及耐阴极剥离性测试确定了适用于低磁不锈钢表面的防护涂层体系.研究结果表明,以棕刚玉为喷砂磨料对基材进行喷砂处理,不仅可以提高基材表面粗糙度,满足涂层高附着需求,同时可降低基材表面残留粒料对基材引起的电化学腐蚀.以环氧锌黄为底层的防护涂层体系,可在不锈钢表面形成一层致密氧化膜,极大限度的阻止膜下扩蚀,使涂层的耐腐蚀性数倍增加.The effects of different surface treatments on corrosion resistance and coating adhesion of low magnetic stainless steel substrate were studied.The protective coating system of low magnetic stainless steel substrate was determined by electrochemical impedance and cathodic stripping resistance test.The results showed that sand blasting with brown corundum as abrasive could not only improve the surface roughness of the substrate,met the requirements of high adhesion coating,but also reduced the electrochemical corrosion of the substrate caused by residual particles on the substrate surface.The protective coating system with epoxy zinc yellow as the bottom layer could form a dense oxide film on the surface of stainless steel,which could greatly prevent the erosion under the film and increased the corrosion resistance of the coating several times.

关 键 词：低磁不锈钢 表面处理 防护涂层 

分 类 号：TG174.4[金属学及工艺—金属表面处理]