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用经典的失重法研究了硫脲对低碳钢表面在硫酸的溶液中的吸附缓蚀性能．应用吸附理论和Ｓｅｋｉｎｅ法处理实验数据，认为硫脲自硫酸溶液中在铁片表面上产生吸附，且基本服从Ｌａｎｇｍｕｉｒ吸附等温式，并求出吸附热，再用热力学方程△Ｇ０＝△Ｈ０－Ｔ△Ｓ０讨论得△Ｓ０＞０，故认为这种吸附是产生缓蚀作用的重要原因．讨论了吸附与吸附作用的关系
The classical method of weight loss was used to study the adsorption and corrosion inhibition of thiourea on the surface of mild steel in sulfuric acid solution. Adsorption theory and Sekine method were used to deal with the experimental data. It was considered that thiourea adsorbed on the surface of iron sheet from sulfuric acid solution and basically obey the Langmuir adsorption isotherm, and the adsorption heat was obtained. Then the thermodynamic equation △ G0 = △ H0-T △ S0 discussed △ S0> 0, so that this adsorption is an important cause of corrosion inhibition. The relationship between adsorption and adsorption is discussed