Corrosion inhibition of aluminum (Al) in hydrochloric acid by anionic polyelectrolyte chondroitin-4-sulfate (CS) polysaccharide has been studied using both gasometrical and weight-loss techniques. The results drawn from these two techniques are comparable and exhibit negligible differences. The inhibition efficiency was found to increase with increasing the inhibitor concentration and decreased with increasing temperature. The inhibition action of CS on Al metal surface was found to obey both of Langmuir and Freundlich isotherms. The factors affecting the corrosion rates such as the concentration and geometrical structure of the inhibitor, concentration of the corrosive medium, and the temperature were examined. The kinetic parameters were evaluated and a suitable corrosion mechanism consistent with the results obtained is discussed.

阴离子聚电解质-4-硫酸软骨素（CS）多糖对盐酸中铝（Al）的腐蚀抑制作用已通过气体计量和失重技术进行了研究。从这两种技术得出的结果是可比较的，并且差异可忽略不计。发现抑制效率随抑制剂浓度的增加而增加，随温度的升高而降低。发现CS对Al金属表面的抑制作用服从Langmuir和Freundlich等温线。研究了影响腐蚀速率的因素，例如抑制剂的浓度和几何结构，腐蚀性介质的浓度以及温度。评估了动力学参数，并讨论了与所得结果相符的合适的腐蚀机理。