Al-Amiery Ahmed A, Kadhum Abdul Amir H, Mohamad Abu Bakar, Junaedi Sutiana
Department of Chemical & Process Engineering, Universiti of Kebangsaan Malaysia (UKM), Bangi, Selangor 43000, Malaysia.
Applied Chemistry Division, Applied Science Department, University of Technology (UOT), Baghdad 10001, Iraq.
Materials (Basel). 2013 Apr 2;6(4):1420-1431. doi: 10.3390/ma6041420.
2-(1-methyl-4-((E)-(2-methylbenzylidene)amino)-2-phenyl-1H-pyrazol-3(2H)-ylidene)-hydrazineecarbothioamide (HCB) was synthesized as a corrosion inhibitor from the reaction of 4-aminoantipyrine, thiosemicarbazide and 2-methylbenzaldehyde. The corrosion inhibitory effects of HCB on mild steel in 1.0 M HCl were investigated using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). The results showed that HCB inhibited mild steel corrosion in acidic solution and inhibition efficiency increased with an increase in the concentration of the inhibitor. The inhibition efficiency was up to 96.5% at 5.0 mM. Changes in the impedance parameters suggested that HCB adsorbed on the surface of mild steel, leading to the formation of a protective film. The novel corrosion inhibitor synthesized in the present study was characterized using Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectral data.
通过4-氨基安替比林、氨基硫脲和2-甲基苯甲醛反应合成了2-(1-甲基-4-((E)-(2-甲基亚苄基)氨基)-2-苯基-1H-吡唑-3(2H)-亚基)-肼基硫代甲酰胺(HCB)作为缓蚀剂。采用动电位极化(PDP)和电化学阻抗谱(EIS)研究了HCB在1.0 M HCl中对低碳钢的缓蚀作用。结果表明，HCB能抑制酸性溶液中低碳钢的腐蚀，缓蚀效率随缓蚀剂浓度的增加而提高。在5.0 mM时，缓蚀效率高达96.5%。阻抗参数的变化表明，HCB吸附在低碳钢表面，形成了保护膜。利用傅里叶变换红外光谱(FTIR)和核磁共振(NMR)光谱数据对本研究合成的新型缓蚀剂进行了表征。
