The dissolution behavior of lead plates in aqueous nitrate solutions

Miho Uchida, Akitsugu Okuwaki

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The dissolution behavior of metallic Pb plates in aqueous neutral sodium nitrate and ammonium nitrate solutions was investigated. Using a rotating disk method, the rate of dissolution was measured by weight changes in the disks for nitrate concentrations of 0.01-0.2 mol dm-3, at rotation speeds of 100-800 rpm and 60-90°C. In ammonium nitrate solution, the dissolution rate was mainly determined by the chemical reaction at temperatures higher than 60°C and by NH4NO3 at concentrations higher than 0.05 mol dm-3. The dissolution rate in NaNO3 solution was much slower than that in NH4NO3 solution. X-ray photoelectron spectroscopy analyses showed the formation and compositional differences of a passive oxide layer containing nitrogen compounds on the lead surface in both nitrate solutions.

Original languageEnglish
Pages (from-to)1977-1986
Number of pages10
JournalCorrosion Science
Volume41
Issue number10
DOIs
Publication statusPublished - 1999 Oct 15

Keywords

  • Passive films
  • Weight loss
  • XPS

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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