摘要
研究了高速电弧喷涂(HVAS)的几种Fe-Al复合涂层的耐高温腐蚀行为,用SEM观察分析了腐蚀表面的形貌和成分、涂层截面的组织结构.结果表明:随温度升高,4种Fe-Al涂层的腐蚀增重都增加,添加Cr3C2比添加WC或不添加任何增强的Fe-Al涂层有更高的耐腐蚀性.Fe-Al/Cr3C2涂层外表面形成了铝和铬的氧化物,阻止了氧化的进一步进行.
The high temperature corrosion performance of High Velocity Arc Sprayed （HVAS） Fe-Al composite coatings on plain sted 20 G was studied by mass change measurements,while surface morphology of the corroded samples were analyzed by SEM. Results show that with the increasing of temperature, the corrosion rate of all Fe-Al coatings also increased, the corrosion resistance of the Fe-Al coating with addition of Cr3C2 is superior to those without or with addition of WC. An oxide scale consisted of Cr and Al oxides formed on the outer surface of the coatings Fe-Al/Cr3C2 ,which prevented the coating from further corrosion.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2008年第3期173-175,共3页
Corrosion Science and Protection Technology
基金
国家自然科学基金资助项目(50235030,50005024)
