摘要
用极化曲线、失重和ＥＩＳ等方法研究了ＡＭＴ（２－氨基－５－巯基－１，３，４－噻二唑）在碳钢／５％ＨＣｌ体系中的缓蚀行为和机理．研究表明ＡＭＴ在该体系中表现为混合型缓蚀剂，其缓蚀机理可归因于几何覆盖效应，在电极表面的吸附符合Ｌａｎｇｍｕｉｒ吸附等温式，吸附热约为２７．１０ｋＪ／ｍｏｌ左右，其ＥＩＳ图谱在自腐蚀电位下与空白一样，只有一个时间常数。
The inhibition behavior of AMT(2 amino 5 mercapto 1,3,4 thiadiazole) in the carbon steel/5%HCl system was studied by polarization curve,weight loss and EIS. It was found that AMT acted as a mix type inhibitor and its inhibiting on effect was due to the geometrically covering. The adsorption of AMT on the electrode surface could be described by Langmuir adsorption, and its adsorption heat was about 27.10 kJ/mol. The EIS of the system with and without AMT exhibited only one time constant, but when cathodically polarized, it showed another capacitive reactance at low frequences due to adsorption.
出处
《腐蚀科学与防护技术》
CAS
CSCD
1998年第6期331-336,共6页
Corrosion Science and Protection Technology
基金
江苏省自然科学基金
