Corrosion Inhibition of Steel by 1, 4-Di (thiocyanatomethyl) benzene in Acidic Geothermal Brine

Sumio AKASHI; Tatsuya KOIZUMI; Kazuo HIROWATARI; Yoshiharu MATSUDA

doi:10.4139/sfj.46.64

Journal of The Surface Finishing Society of Japan

Online ISSN : 1884-3409
Print ISSN : 0915-1869
ISSN-L : 0915-1869

Corrosion Inhibition of Steel by 1, 4-Di (thiocyanatomethyl) benzene in Acidic Geothermal Brine

Sumio AKASHI, Tatsuya KOIZUMI, Kazuo HIROWATARI, Yoshiharu MATSUDA

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Keywords: Corrosion Inhibitor, Steel, Geothermal Brine, 1,4-Di (thiocyanatomethyl) benzene, Two Phase Flow

JOURNAL FREE ACCESS

1995 Volume 46 Issue 1 Pages 64-69

DOI https://doi.org/10.4139/sfj.46.64

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Abstract

The corrosion-inhibiting effect of 1, 4-Di (thiocyanatomethyl) benzene on iron in pH 2 geothermal brine was investigated through weight-loss measurement at 150°C and electrochemical measurement at 50°C. Pitting corrosion and whole-surface corrosion on the iron were inhibited by the 1, 4-Di (thiocyanatomethyl) benzene, which increased the cathodic polarization and showed an excellent inhibition effect on steel tubes in two-phase flow geothermal brine.

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