电弧喷涂铝基涂层耐高温硫化腐蚀性能的研究  

High temperature sulphidization corrosion resistance of Al-based coating by arc spraying

作　　者：任春岭[1] 魏琪[1] 栗卓新[1] 方建筠[1] 周新建[1] 

机构地区：[1]北京工业大学材料科学与工程学院,北京100022

出　　处：《金属热处理》2007年第12期53-56,共4页Heat Treatment of Metals

基　　金：北京市教委科技发展项目(KM200610005026)

摘　　要：对电弧喷涂铝基涂层在600℃条件下的耐硫化氢腐蚀性能进行了研究,并与Fe-Al涂层和A304不锈钢的耐H2S腐蚀性能进行了对比。结果表明,铝基涂层的耐硫化氢腐蚀性能优于Fe-Al涂层和A304不锈钢。铝基涂层具有良好的耐H2S腐蚀性能的主要原因是涂层中的Al含量很高,在腐蚀过程中能优先生成Al的腐蚀产物以及涂层中含有多种铝的金属间化合物,能够阻碍硫原子向金属内部渗入,从而保证了铝基涂层具有良好的耐硫化腐蚀性能。Hydrogen sulfide （H2S） corrosion resistance at 600 % of Al-based coating prepared by arc spraying was investigated and compared with A304 stainless steel and Fe-Al coating. The results show that the Al-based coating has the best hydrogen sulfide corrosion resistance among the three kinds of coatings. The reason is that, because of the high Al content of the Al-based coating. Aluminous corrosion products are prior to form and the coating includes various aluminous intermetallics,which prevent the sulfur from penetrating to the inner coating, resulting in excellent hydrogen sulfide corrosion resistance property.

关 键 词：电弧喷涂 粉芯线材 铝基涂层 高温硫化腐蚀 

分 类 号：TG174.442[金属学及工艺—金属表面处理]