Zn-Al-Mg-RE涂层与有机涂层协同性的研究  

Synergy effect between Zn-Al-Mg-RE coating and organic coatings

作　　者：付东兴[1] 徐滨士[2] 张晓囡[1] 杨中元[1] 

机构地区：[1]北京有色金属研究总院有研粉末新材料(北京)有限公司,北京101407 [2]装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072

出　　处：《金属热处理》2009年第11期10-13,共4页Heat Treatment of Metals

基　　金：装备再制造技术国防科技重点实验室预研基金项目(51489020304js9101)

摘　　要：采用高速电弧喷涂技术在Q235钢表面制备Zn-Al-Mg-RE涂层后涂装海洋防腐有机涂层,构建一种新型的长效防腐复合涂层。同时,在Q235钢基体和高速电弧喷涂Al涂层表面涂装该有机涂层作为对比试样,观察了在5wt%NaCl溶液中常温浸泡212天后各体系微观孔隙处腐蚀产物的微观结构,用电化学交流阻抗谱技术研究了微观孔隙形成过程中金属涂层与有机涂层之间的协同性。结果表明,Zn-Al-Mg-RE涂层体系微观孔隙中形成的腐蚀产物微观结构致密;Zn-Al-Mg-RE涂层与该有机涂层具有最好的协同性。A set of anticorrosion organic coatings was applied on a Zn-Al-Mg-RE coating forming a new long term anti-coiTosion multi-layer coating, and the metallic coating was prepared by high velocity arc spraying technology（HVAS）. The organic coatings were also applied on a HVAF Al coating and Q235 steel substrate. After the coatings were immersed in 5wt% NaCl solution for 212 days at room temperature,the microstructure of corrosion products in micro-pores were observed with SEM. During micro-pores appearing, the synergy effect between the metallic coatings and the organic coatings in corrosive environment was investigated by EIS. The results indicate that the microstructure of corrosion products in the micro-pores of the Zn-Al-Mg-RE coating system is compacted. The Zn-Al-Mg-RE coating has the best synergy effect with the organic coatings.

关 键 词：高速电弧喷涂 Zn-Al-Mg-RE涂层 有机涂层 电化学交流阻抗谱技术(EIS) 耐蚀性能 

分 类 号：TG174.2[金属学及工艺—金属表面处理]