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The mechanism of corrosion inhibition of copper in NaCl solution by benzotriazole studied by electron spectroscopy

✍ Scribed by T. Hashemi; C.A. Hogarth

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
435 KB
Volume
33
Category
Article
ISSN
0013-4686

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✦ Synopsis

Surface films formed by benzotriazole on copper in 3 % brine solution were investigated using Xray photoelectron spectroscopy (XF'S or ESCA) and X-ray induced Auger spectroscopy (X-AES). This combination proved to be quite useful for such studies. Based on the results obtained, a model for the inhibition mechanism is proposed. According to this model, disproportionation of the Cu(1) ions followed by formation of a CuCl layer constitutes a suitable base for Cu-inhibitor complex formation. The thickness of the final complex layer is mainly governed by an intermediate stage of CuCl formation.

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