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Inhibitory action of 3-trimethoxysilylpropanethiol-1 on copper corrosion in NaCl solutions

✍ Scribed by Anna Maria Beccaria; Cristina Bertolotto

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 919 KB
Volume: 42
Category: Article
ISSN: 0013-4686
DOI: 10.1016/s0013-4686(96)00357-x

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✦ Synopsis

The inhibitory action of 3(trimethoxysilyl)propanethiol-1 (TMSPT) on copper corrosion in NaCl 3.5% solutions at pH 6.5, at 25-C and with an initial oxygen content of 6.5 ppm was examined. Different amounts ofTMSPT (0.5 x 10mi, I.1 x IO-j, 2.0 x 10e3, 2.7 x 10m3) M were added to NaCl solutions. Weight loss and electrochemical tests show that the inhibitory action of TMSPT increases with increasing TMSPT concentration, and decreases with increasing the exposure time. TMSPT acts as an anodic inhibitor (by forming an adsorption film on copper surfaces) as well as a cathodic inhibitor (by reducing dissolved oxygen content in corrosive solutions).

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