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采用失重法、动电位极化曲线和电化学阻抗谱等方法研究了几种模拟胞外聚合物在1mol·L~(-1) HCl中对A3钢的缓蚀作用,并用扫描电镜(SEM)观察腐蚀形貌。结果表明:模拟胞外聚合物中牛血清白蛋白对A3钢腐蚀抑制效果明显;羧甲基纤维素钠对A3钢有一定的缓蚀效果,但缓蚀率较低;黄腐酸、腐殖酸钠和海藻酸钠对A3钢基本无缓蚀效果,甚至在一定程度上促进了腐蚀。
The corrosion inhibition effect of several simulated extracellular polymers on A3 steel in 1 mol·L -1 HCl was investigated by weight loss method, potentiodynamic polarization curve and electrochemical impedance spectroscopy. The scanning electron microscopy (SEM) Observe the corrosion morphology. The results showed that bovine serum albumin (BSA) could inhibit the corrosion of A3 steel significantly, while sodium carboxymethylcellulose had a certain corrosion inhibition effect on A3 steel, but the corrosion inhibition rate was lower. FA, humus Sodium sodicate and sodium alginate A3 steel basically no corrosion effect, and even promoted corrosion to some extent.