新型三唑衍生物缓蚀剂对Q235-A钢H_2SO_4酸洗的缓蚀作用  

Inhibition Action of a Novel Triazole Derivative as a Picking Inhibitor for Q235-A Steel in Sulfuric Acid

作　　者：姜德成[1] 刘福国[2] 武素茹[3] 张有慧[4] 

机构地区：[1]黑龙江齐齐哈尔大学机械工程学院,黑龙江齐齐哈尔161006 [2]海洋石油工程股份有限公司海洋工程技术中心,天津300451 [3]天津出入境检验检疫局化矿金属材料检测中心,天津300456 [4]海洋石油工程股份有限公司设计公司海管部,天津300451

出　　处：《材料保护》2010年第3期24-26,43,共4页Materials Protection

摘　　要：钢材酸洗添加缓蚀剂是一种有效、经济的防腐蚀方法,研究缓蚀剂的作用机理,发展和完善缓蚀剂的理论已成为研究的热点。采用失重法、电化学方法研究了新型三唑衍生物对Q235-A钢在1mol/LH2SO4中的缓蚀性能、机理和表面的吸附行为。结果表明:新型三唑衍生物缓蚀剂是一种混合型缓蚀剂,在1mol/LH2SO4溶液中,其浓度为1000mg/L时缓蚀率最高达94.6%;在Q235-A钢表面的吸附行为符合Bockris-Swinkels吸附等温式。The inhibitive effect of a no-vel synthetic triazole derivative for Q235-A steel in 1 mol/L H2SO4 was evaluated by using weight-loss and electrochemical methods. The inhibition mechanism and adsorption behavior of the triazole derivative on the surface of steel were also examined. Results show that the triazole derivative is a mixed-type inhibitor. At a concentration of 1 000 mg/L, it had the highest inhibition efficiency of up to 94.6% for the steel in 1 mol/L H2SO4. More-over , the adsorption of the triazole derivative on the surface of the steel could be fitted to Bockris-Swinkels isotherm equation.

关 键 词：缓蚀剂 新型三唑衍生物 电化学阻抗谱 等温式 

分 类 号：TG174.42[金属学及工艺—金属表面处理]