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采用失重法、极化曲线法和交流阻抗法研究了在0.5M磷酸溶液中CNS~-、I~-对溴化苄基三苯基鏻(BPB)和1.4一双(溴化三苯基鏻)丁烷(DPBB)缓蚀效率的影响及BPB和DPBB在碳钢/溶液界面上的吸附规律。结果表明,CNS~-及I~-明显提高季鏻盐对碳钢的缓蚀效率。协同效应的大小与季鏻盐对阴离子的浓度比密切相关。在磷酸溶液中,BPB和DPBB在碳钢/溶液界面上的吸附遵循Bockris-Swinkels吸附等温式。当磷酸溶液中含有一定量的CNS~-或I~-时,由于吸附粒子间的相互作用,季鏻盐在碳钢/溶液界面的吸附遵循校正的Bockris-Swinkels吸附等温式。
The effects of CNS ~ -, I ~ - on benzyltriphenylphosphonium bromide (BPB) and 1.4-bis (triphenylphosphonium bromide) in 0.5M phosphoric acid solution were investigated by weight loss method, polarization curve method and AC impedance method. Butane (DPBB) and the adsorption of BPB and DPBB on carbon steel / solution interface. The results show that CNS ~ - and I ~ significantly improve the corrosion inhibition efficiency of quaternary phosphonium salt on carbon steel. The size of the synergistic effect is closely related to the quaternary phosphonium salt concentration on the anion. In phosphate solution, the adsorption of BPB and DPBB on the carbon steel / solution interface follows the Bockris-Swinkels adsorption isotherm. When the phosphoric acid solution contains a certain amount of CNS ~ - or I ~ -, the adsorption of quaternary phosphonium salt at the carbon steel / solution interface follows the corrected Bockris-Swinkels adsorption isotherm due to the interaction of the adsorbed particles.