采用失重法、电化学极化曲线和电化学阻抗谱研究了谷氨酸对0.5 mol/L HCl溶液中铜的缓蚀作用.试验表明,谷氨酸的缓蚀效果随其浓度的增大而增大,在用量为1 mmol/L时对铜的缓蚀效率可达73.7%.加入谷氨酸导致铜电极腐蚀电位负移,抑制了铜电极的阴极电化学过程.谷氨酸的缓蚀作用随溶液的pH值变化而变化,当pH值接近其等电点时缓蚀作用最小.
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