Sebacic acid as corrosion inhibitor for hot‐dip galvanized (HDG) steel in 0.1 M NaCl | Zendy

Fedel Michele | Zendy; Poelman Mireille | Zendy; Olivier Marjorie | Zendy; Deflorian Flavio | Zendy

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Sebacic acid as corrosion inhibitor for hot‐dip galvanized (HDG) steel in 0.1 M NaCl

Author(s) -

Fedel Michele,

Poelman Mireille,

Olivier Marjorie,

Deflorian Flavio

Publication year - 2019

Publication title -

surface and interface analysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.52

H-Index - 90

eISSN - 1096-9918

pISSN - 0142-2421

DOI - 10.1002/sia.6617

Subject(s) - galvanization , sebacic acid , corrosion , corrosion inhibitor , chemistry , scanning electron microscope , dissolution , fourier transform infrared spectroscopy , electrochemistry , nuclear chemistry , metal , zinc , metallurgy , inorganic chemistry , materials science , layer (electronics) , chemical engineering , polymer chemistry , organic chemistry , composite material , electrode , engineering

The potential of sebacic acid as a corrosion inhibitor for hot‐dip galvanized steel in 0.1 M NaCl solution has been investigated. Different concentrations of the organic acid have been tested in order to understand the inhibition mechanism of the compound. The electrochemical test revealed a competitive mechanism between the dissolution of the metal in the acidified solution and the inhibition provided by the dicarboxylic species. The formation of a whitish layer consisting of zinc carboxylates and corrosion products was proved by means of scanning electron microscopy (SEM) investigation combined with Fourier transform infrared (FT‐IR) analysis. A bidentate bridging coordination between the Zn(II) and the carboxylic species is suggested.

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