On the inhibition effect of dialkyl phosphates in the depassivation of metals

Authors
Kuznetsov, YI Andreeva, NP Kazanskaya, GY
Citation
Yi. Kuznetsov et al., On the inhibition effect of dialkyl phosphates in the depassivation of metals, PROT MET R, 36(4), 2000, pp. 351-355
Citations number
9
Categorie Soggetti
Metallurgy
Journal title
PROTECTION OF METALS
ISSN journal
00331732 → ACNP
Volume
36
Issue
4
Year of publication
2000
Pages
351 - 355
Database
ISI
SICI code
0033-1732(200007/08)36:4<351:OTIEOD>2.0.ZU;2-C
Abstract
The inhibition effect and adsorption of bis(2-ethylhexyl) phosphate (EHP) a nd dioctyl phosphate (DOP) anions ((C8H17-O)(2)P(O)OH) in the depassivation of iron, aluminum, and zinc in neutral solutions were studied by electroch emical and ellipsometric methods. Both the anions exhibit high passivating properties; DOP is superior to EHP in passivating iron and has a considerab le aftereffect. The adsorption of dialkyl phosphates on passive iron from a berate buffer is governed by the Frumkin isotherm.