电弧喷涂Zn-Al-Mg涂层的组织及耐蚀性研究  

Microstructure and Anti-corrosion Properties of Arc Sprayed Zn-Al-Mg Coating

作　　者：周勇[1] 刘玉栋[1] 马晓琳[1] 王楠[1] 

机构地区：[1]西安石油大学材料科学与工程学院,陕西西安710065

出　　处：《热加工工艺》2016年第12期138-141,共4页Hot Working Technology

基　　金：西安石油大学博士基金项目(134010189);西安石油大学<材料科学与工程>省级优势学科资助(2015)

摘　　要：利用超音速电弧喷涂技术在20钢表面分别制备了Zn-Al-Mg、An-Al和Zn涂层。采用扫描电镜分析了Zn-Al-Mg涂层的组织形貌,用X射线衍射分析了涂层的相结构,并测试了涂层的结合强度。通过电化学试验对三种涂层进行对比,比较了三种涂层在酸性土壤模拟液中的腐蚀行为。结果表明:Zn-Al-Mg涂层组织致密,与基体结合良好;Zn-Al-Mg涂层的耐蚀性优于Zn-A1涂层和纯Zn涂层。Zn-Al-Mg,Zn-Al and Zn coatings were prepared on 20 steel substance by supersonic arc spraying. The surface morphologies of Zn-Al-Mg coatings were analyzed by SEM. The structure and phases of the coating were analyzed by X-Ray diffraction. The adhesive strength of the coating was tested. The electrochemical experiments were employed to compare the corrosion behaviors of Zn-Al-Mg coating with the pure Zn coating and Zn-Al coating in simulated acid soil solution. The results show that Zn-Al-Mg coating is compact, which is in well bonding with substrate. Zn-Al-Mg coating has higher corrosion resistance than pure Zn coating and Zn-Al coating.

关 键 词：耐蚀性 Zn-Al-Mg 涂层 电化学腐蚀 超音速电弧喷涂 

分 类 号：TG174[金属学及工艺—金属表面处理]