期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 222, 期 -, 页码 400-413出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2019.06.121
关键词
Synthesis of hybrid pigment; Corrosion inhibition; XPS; FT-IR; EIS
The major goal of this research was development of a corrosion inhibitive pigment based on Neodymium (III)-Benzimidazole (C7H6N2). The chemical composition of the Neodymium-Benzimidazole pigment (NdBi) was investigated by Fourier transform infrared (FT-IR) (spectroscopy) and X-ray photoelectron spectroscopy (XPS). The XPS and FT-IR results indicated strong chelation between Nd-Bi in the hybrid pigment. The ICP and UV-Vis analyses results reflected high release capability of inorganic and organic parts of the pigment in 3.5% NaCI solution and reached to the maximum concentration of 475 mg/L. Also the thermogravimetry analysis (TGA/DTG) results confirmed the chelation between the organic and inorganic parts of the Nd-Bi hybrid pigment. The potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) results revealed that the Nd-Bi hybrid pigment addition to the saline solution yielded the maximum corrosion inhibition efficiency of 83.6% and showed mixed type corrosion inhibitor response. The corrosion resistance of mild steel in the NaCI solution inhibited by 1 g/l Nd-Bi hybrid pigment extract was 9 times greater than the uninhibited steel sample, reflecting the precipitation of a protective film whose composition was analyzed by using scanning electron microscopy (SEM)/ energy dispersive spectroscopy (EDS) analysis, XPS and contact angle measurements. The obtained results from surface characterizations confirmed the formation of a protective film by organic and inorganic parts of Nd-Bi pigment over the mild steel surface. (C) 2019 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据