不锈钢在硝酸-氢氟酸中酸洗缓蚀抑雾剂的筛选  

Screening of Corrosion and Acid Fog Inhibitor in Nitrate Acid and Hydrofluoric Acid for Stainless Steels

作　　者：龚敏[1] 张远声[1] 

机构地区：[1]四川轻化工学院材料与化学工程系,四川自贡643033

出　　处：《四川轻化工学院学报》2000年第3期33-35,共3页Journal of Sichuan Institute of Light Industry and Chemical Technology

基　　金：中国科学院金属腐蚀所国家重点实验室基金

摘　　要：采用线性极化技术对18-8不锈钢在8%HNO3+2%HF酸洗介质中的缓蚀抑雾剂进行筛选，经正交试验，得出最佳配方的组成为0.3%硫脲衍生物+0.2%乌洛托品+0.3%硫氰酸铵+0.2%十二烷基苯磺酸钠，缓蚀率达到99%，抑雾率达到85%左右，该最佳配方的缓蚀抑雾剂对材料的力学性能不产生影响。The corrosion and acid fog inhibitor for 18-8stainless steel in 8%HNO3 and 2%HF is screened by line polarization technique. An optimum formulation is determined by orthogonal test. The corrosion inhibition efficiency reaches 99% and acid fog inhibition efficiency reaches 85% when the mixing acid consisted of 0.3%thiourea derivative +0.2%methenamine+0.3%ammonium thiocyanate +0.2% sodium dodecyl benzene sulfonate (SDBS). the mixing acid never harms the strength of the stainless steels.

关 键 词：不锈钢 硝酸 氢氟酸 缓蚀抑雾剂 酸洗 

分 类 号：TG174.42[金属学及工艺—金属表面处理]