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用线性极化曲线法研究了N 癸基吡啶溴化铵 (DP) /N 癸基 3 羟基吡啶溴化铵 (D3OP)和N 癸基 3 羧基吡啶溴化铵 (D3CP)在 5 %氨基磺酸中对铁的缓蚀作用及其吸附模型。结果表明 :它们对 5 %氨基磺酸中的铁具有良好的缓蚀作用 ,在吡啶环上引入合适的取代基能提高吡啶嗡离子的缓蚀效果。它们在铁表面的吸附主要为物理吸附 ,其吸附遵循Langmuir吸附等温式 ;随着温度和使用浓度的提高 ,其缓蚀性能加强 ;三种缓蚀剂缓蚀能力大小为D3CP >D3OP >DP。
The effects of N-decyl pyridinium bromide (DP) / N decyl 3-hydroxypyridine ammonium bromide (D3OP) and N-decyl 3 carboxypyridine ammonium bromide (D3CP) Corrosion Inhibition and Adsorption Model of Iron in. The results show that they have a good corrosion inhibition effect on iron in 5% sulfamic acid. The introduction of suitable substituents on the pyridine ring can improve the inhibition effect of pyridinium ion. Their adsorption on the iron surface is mainly physical adsorption, the adsorption followed Langmuir adsorption isotherm; with the increase of temperature and use concentration, its corrosion inhibition performance is strengthened; The corrosion inhibition capacity of the three corrosion inhibitors is D3CP> D3OP> DP.