引用本文:
何祚清, 李金良. 阴离子(SH-和SCN-)与季鏻盐对铝的缓蚀作用[J]. 应用化学,
1996, 13(3): 55-59.
Citation: He Zuoqing, Li Jinliang. Inhibitive Effects of Anions(SH- and SCN-)and Phosphonium Salt on Corrosion of Aluminum[J]. Chinese Journal of Applied Chemistry, 1996, 13(3): 55-59.
Citation: He Zuoqing, Li Jinliang. Inhibitive Effects of Anions(SH- and SCN-)and Phosphonium Salt on Corrosion of Aluminum[J]. Chinese Journal of Applied Chemistry, 1996, 13(3): 55-59.
阴离子(SH-和SCN-)与季鏻盐对铝的缓蚀作用
摘要:
用微分极化电阻测量技术和交流阻抗法研究在1 mol/L高氯酸铝溶液中,阴离子SH-和SCN-对溴化丁基三甲基鏻(BTMPB)对铝的缓蚀作用及吸附行为的影响.结果表明,SH-和SCN-能显著提高BTMPB对铝的缓蚀效率,两者和BTMPB对铝的缓蚀具有明显的协同作用.在高氯酸铝溶液中,BTMPB在铝/溶液界面上的吸附服从Langmuir吸附等温式,为物理吸附,但是当在1 mol/L高氯酸铝溶液中加入1×10-4mol/L的SH-或SCN-时,BTMPB在铝/溶液界面上的吸附则为化学吸附,服从修正的Bockris-Swinkels吸附等温式.
English
Inhibitive Effects of Anions(SH- and SCN-)and Phosphonium Salt on Corrosion of Aluminum
Abstract:
The effects of anions(SH- and SCN-)on inhibition and adsorption behaviors of butyltrimethylphosphonium bromide(BTMPB)for corrosion inhibition of aluminum have been studied by using the differential polarization resistance and impedance determination techniques in 1 mol/L Al(ClO4)3 solution at 25~45℃.The results showed that SH- or SCN- can increase prominently the inhibitive efficiency of BTMPB for corrosion inhibition of aluminum,and that the synergistic effect of corrosion inhibition appears between the anions and BTMPB.The adsorption of BTMPB follows Langmuir isotherm on the aluminum surface in 1 mol/L Al(ClO4)3 solution,and it belongs to the physical adsorption.When the anions are added to 1 mol/L Al(ClO4)3 solution containing BTMPB,the adsorption of BTMPB belongs to the chemical adsorption,and it follows the amended Bockris-Swinkels isotherm.
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Key words:
- anion
- / phosphonium salt
- / aluminum
- / inhibition
- / adsorption
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