【摘要】 采用析氢测量法、计时-电位法(E-T曲线)、Tafel曲线、扫描电镜和能谱分析等分析测试方法研究不同轧制工艺的Al-Mg-Sn-Bi-Ga-In铝合金阳极在80℃、在浓度为5mol/L NaOH电解液中添加缓蚀剂Na2SnO3的电化学性能和耐腐蚀性能。研究结果表明:按道次变形量40%进行轧制时,随着轧制温度的升高,开路电位负移,而活性和耐腐蚀性能先提高后降低;在370℃进行轧制时,随着道次变形量增大,开路电位正移,活性逐渐降低,而耐腐蚀性能先提高后降低;在370℃,按道次变形量40%进行轧制时,铝合金阳极的综合性能最佳。更多还原

【Abstract】 Modern examination techniques such as hydrogen production test,galvanodynamic (E-T curves) methods,Tafel curves,scanning electron microscope and energy spectrum analysis were applied to analyze the electrochemical properties of Al alloys anode through different rolling processes in alkaline solution (80 ℃ ,Na2SnO3+5 mol/L NaOH). The results show that under 40% pass deformation,with the increase of the rolling temperature,the open-circuit potential falls,but the anti-corrosion properties and electrochemical activity first increase and then decrease; at the rolling temperature of 370 ℃ ,with the increase of pass deformation,the open-circuit potential increases and electrochemical activity gradually decreases,and at the same time the anti-corrosion properties first decreases and then increases; at 370 ℃ ,under 40% pass deformation,Al alloy anode has the best comprehensive property.更多还原