| Na2SO4溶液中磷酸环己胺的缓蚀机理及其吸附与脱附行为 |
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| 引用本文： | 程玉峰 杜元龙. Na2SO4溶液中磷酸环己胺的缓蚀机理及其吸附与脱附行为[J]. 中国腐蚀与防护学报, 1997, 17(2): 142-146 |
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| 作者姓名： | 程玉峰 杜元龙 |
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| 作者单位： | 中国科学院金属腐蚀与防护研究所!金属腐蚀与防护国家重点实验室，沈阳110015，中国科学院金属腐蚀与防护研究所!金属腐蚀与防护国家重点实验室，沈阳110015，中国科学院金属腐蚀与防护研究所!金属腐蚀与防护国家重点实验室，沈阳110015 |
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| 摘 要： | 应用极化曲线和交流阻抗技术研究了磷酸环己胺在Ｎａ２ＯＳ４溶液中的缓蚀机理及其吸附与脱附行为。结果表明，磷酸环己胺是一种负催化效应作用机理的阳极型缓蚀剂。它在铁电极上的吸附等温式符合Ｔｅｍｋｉｎ模型。由于缓蚀剂的吸附与脱附作用，其阴极极化曲线存在着氧扩散极限电流区，强吸附区和Ｔｅｆｅｌ线性区，而阳极极化曲线存在着Ｔａｆｅｋ线性区，脱附区和无缓蚀区。
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| 关 键 词： | 磷酸环己胺 缓蚀机理 吸附 脱附 硫酸钠溶液 |
INHIBITION AND ADSORPTION/DESORPTION OF CYCLOHEXYLAMINE PHOSPHATE IN Na_2SO_4 SOLUTION |
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| CHENG Yufeng DU Yuanlong CAO Chunan. INHIBITION AND ADSORPTION/DESORPTION OF CYCLOHEXYLAMINE PHOSPHATE IN Na_2SO_4 SOLUTION[J]. Journal of Chinese Society For Corrosion and Protection, 1997, 17(2): 142-146 |
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| Authors: | CHENG Yufeng DU Yuanlong CAO Chunan |
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| Abstract: | The inhibition mechanism and adsorption/desorption behavior of cyclohexylamine phosphate (PCA) in Na2SO4 solution were studied by electrochemical techniques. Clearly the inhibition of PCA was due to negative catalytic effect, which mainly affected the anodic reaction. Its adsorption obeyed the Temkin isotherm. There were oxygen diffusion part, strong adsorption part and Tafel linear part on the cathodic polarization curves and Tafel linear part, desorption part and non-inhibition part on anodic curves. There was a linear relationship between PCA concentration and the adsorption and desorption potential, but the PCA concentration had no effect on the range of adsorption potential. |
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| Keywords: | Cyclohexylamine phosphate Inhibition Adaorption/desorption Na2SO4 solution |
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