The influence of temperature on the corrosion inhibition of API 5L X42 pipeline steel in HCl medium by gum arabic
作者： Hamza Bentrah , Abdelouahad Chala , Mounir Djellab , Youssouf Rahali , Hicham Taoui
DOI: 10.1108/ACMM-11-2016-1734
关键词:
摘要: Purpose This paper aims to investigate the influence of temperature (25-65°C) on adsorption and inhibition efficiency gum arabic (GA) for corrosion API 5L X42 pipeline steel in 1M HCl. Design/methodology/approach Inhibition behaviour HCl has been studied relation concentration inhibitor using potentiodynamic polarization curves electrochemical impedance spectroscopy. Thermodynamic parameters were calculated from viewpoint theory. Findings The results show that at a range 25 65°C, GA was good steel, its significantly stable. The maximum (93 per cent) is obtained 4 g L−1. In absence presence GA, there almost no change mechanism regardless temperature. surface an exothermic process. involves physical adsorption. Practical implications The use as eco-friendly practical carbon HCl. Originality/value The stability 65°C could find possible applications acid pickling, industrial cleaning descaling.
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