The dissolution behavior of lead plates in aqueous nitrate solutions

Citation
M. Uchida et A. Okuwaki, The dissolution behavior of lead plates in aqueous nitrate solutions, CORROS SCI, 41(10), 1999, pp. 1977-1986
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
CORROSION SCIENCE
ISSN journal
0010-938X → ACNP
Volume
41
Issue
10
Year of publication
1999
Pages
1977 - 1986
Database
ISI
SICI code
0010-938X(199910)41:10<1977:TDBOLP>2.0.ZU;2-G
Abstract
The dissolution behavior of metallic Pb plates in aqueous neutral sodium ni trate and ammonium nitrate solutions was investigated. Using a rotating dis k method, the rate of dissolution was measured by weight changes in the dis ks for nitrate concentrations of 0.01-0.2 mol dm(-3), at rotation speeds of 100-800 rpm and 60-90 degrees C. In ammonium nitrate solution, the dissolu tion rate was mainly determined by the chemical reaction at temperatures hi gher than 60 degrees C and by NH4NO3 at concentrations higher than 0.05 mol dm(-3). The dissolution rate in NaNO3 solution was much slower than that i n NH4NO3 solution. X-ray photoelectron spectroscopy analyses showed the for mation and compositional differences of a passive oxide layer containing ni trogen compounds on the lead surface in both nitrate solutions. (C) 1999 El sevier Science Ltd. All rights reserved.