樟树叶提取液与碘化钾的缓蚀协同效应

采用电化学方法研究了樟树叶提取液(CCIE)和碘化钾复配后(FPCCLE),对Q235钢在硫酸溶液中的缓蚀协同效应,结果表明:樟树叶提取液与碘化钾复配后,腐蚀电流密度减小,腐蚀电位负移,脱附电位Edes正移,增大了缓蚀剂的有效作用范围,提高了缓蚀剂的吸附稳定性,表现出更好的缓蚀作用,且缓蚀效率随提取液浓度的增加而增大；...

The Synergistic Inhibition Effect of Cinnamomum Camphor Leaves Extractive and Potassium Iodide

The electrochemical method was used to study the synergistic effect between Cinnamomum camphor leaves extractive and potassium iodide for Q235 steel in sulfuric acid solution.The results showed that the corrosion current density decreased,when Cinnamomum camphor leaves extractive complexed with potassium iodide,the desorption potential positively shifted and corrosion potential negatively shifted,so the effective inhibitor region was increased,the adsorption stability of inhibitor was improved,showing better corrosion inhibition performance.The inhibition efficiency increased with increasing the Cinnamomum camphor leaves extractive concentration.The composite inhibitor made up of Cinnamomum camphor leaves extractive and potassium iodide was a mixed-type inhibitor,and the inhibitor mechanism of which was coverage effect.The joint adsorption of Cinnamomum camphor Leaves and potassium iodide on the Q235 steel surface was mainly overlapping adsorption,and the adsorption conformed with Langmuir adsorption isotherm equation.