硫化氢盐水中55%AlZn镀层的腐蚀行为  

Corrosion Behavior of 55% Al-Zn Coating in Salt Solution Containing Hydrogen Sulfide

作　　者：刘根凡[1] 李华飞[1] 郑家 俞敦义[2] 

机构地区：[1]华中科技大学能源学院,湖北武汉430074 [2]华中科技大学化学系,湖北武汉430074

出　　处：《材料保护》2002年第5期13-15,共3页Materials Protection

摘　　要：制备了 5 5 %Al Zn镀层钢板 ,镀层中间相的化学成分为 5 2 .0 2 %Al、3.89%Zn、2 .4 2 %Si、4 1.6 6 %Fe ,熔炼了中间相合金 ,测试了中间相合金在不同浓度硫化氢盐水中的腐蚀速率 ,探讨了其腐蚀行为。测试了中间相合金在硫化氢盐水中的自然腐蚀电位、极化曲线和电化学交流阻抗。结果表明 ,中间相合金在该介质中的耐腐蚀性是 5 5 %Al Zn合金层的 2～13倍 ,比基体钢高 1～ 2个数量级。Al\|Zn coated steel was prepared by hot dipping, and the mesophase of coating was composed of 52.02%Al, 3.89%Zn, 2.42%Si and residual Fe. The mesophase alloy was smelted in vacuum furnace, and its corrosion rate in brine containing hydrogen sulfide was tested. The corrosion behavior and mechanism of mesophase alloy were studied by polarization curve and electrochemical impedance methods. Results showed that corrosion resistant of mesophase alloy was 2～13 times better than 55%Al\|Zn alloy coating, and 1～2 orders of magnitude than steel matrix.

关 键 词：硫化氢盐水 腐蚀行为 铝锌镀层 中间相合金 化学成分 电镀 

分 类 号：TG172[金属学及工艺—金属表面处理]