聚天冬氨酸
腐蚀
降级(电信)
羧酸
螯合作用
碳钢
阴极保护
缓蚀剂
水解
化学
沉积(地质)
阳极
氧气
冶金
材料科学
无机化学
核化学
有机化学
电信
原材料
古生物学
电极
物理化学
沉积物
计算机科学
生物
作者
Piji Zhang,Lida Wang,Wen Sun,Zhong-Jian Yang,Wei Gao,Wen Sun
标识
DOI:10.1016/j.corsci.2023.111423
摘要
The anti-scale performance of two typical carboxylic acid scale inhibitors, hydrolyzed polymaleic anhydride (HPMA) and polyaspartic acid (PASP), was investigated under different corrosion conditions of carbon steel. It reveals that steel corrosion induces the anti-scale performance degradation of the carboxylic acid scale inhibitors at steel-water interface, due to the preferential chelation of Fe2+ and carboxylic acid group. The anti-scale performance of scale inhibitor can be fully exerted when corrosion processes are inhibited. Otherwise, uninhibited cathodic oxygen reduction and anodic iron oxidation will induce interfacial pH rising and chelated Ca2+ being replaced, respectively, leading to CaCO3 deposition on steel surface.
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