盐酸中低碳钢的新型缓蚀剂

Al-Amiery Ahmed A, Kadhum Abdul Amir H, Alobaidy Abdul Hameed M, Mohamad Abu Bakar, Hoon Pua Soh

Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor 43000, Malaysia.

Environmental Research Center, University of Technology (UOT), Baghdad 10001, Iraq.

Materials (Basel). 2014 Jan 27;7(2):662-672. doi: 10.3390/ma7020662.

Corrosion inhibitory effects of new synthesized compound namely 5,5'- ((1Z,1'Z)-(1,4-phenylenebis(methanylylidene))bis(azanylylidene))bis(1,3,4-thiadiazole-2-thiol) (PBB) on mild steel in 1.0 M HCl was investigated at different temperatures using open circuit potential (OCP), potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). Results showed that PBB inhibited mild steel corrosion in acid solution and indicated that the inhibition efficiencies increased with the concentration of inhibitor, but decreased proportionally with temperature. Changes in impedance parameters suggested the adsorption of PBB on the mild steel surface, leading to the formation of protective films.

研究了新合成的化合物5,5'-((1Z,1'Z)-(1,4-亚苯基双(亚甲基))双(氮亚甲基))双(1,3,4-噻二唑-2-硫醇)(PBB)在不同温度下，于1.0 M盐酸中对低碳钢的缓蚀作用，采用开路电位(OCP)、动电位极化(PDP)和电化学阻抗谱(EIS)进行研究。结果表明，PBB抑制了低碳钢在酸性溶液中的腐蚀，且缓蚀效率随缓蚀剂浓度的增加而提高，但与温度成比例降低。阻抗参数的变化表明PBB吸附在低碳钢表面，从而形成保护膜。