In situ XANES study of the cathodic reduction behavior of the passive film on iron and artificial passive films

PDF Version Also Available for Download.

Description

The objective of the present work is to compare the behavior of the passive film on iron with artificial passive films (thin sputter-deposited films of iron oxides on inert substrates). In situ XANES measurements were used to monitor both dissolution and changes in the valence state of passive films on iron during cathodic reduction in borate buffer and in NaOH. Reductive dissolution of the passive film on iron proceeds by a very similar mechanism as has been found for artificial passive films (thin, sputter-deposited films of iron oxides on inert substrates)--i.e. including a conversion step of the passive film to ... continued below

Physical Description

13 p.

Creation Information

Schmuki, P.; Virtanen, S.; Boehni, H.; Isaacs, H.S.; Ryan, M.P. & Oblonsky, L.J. October 1, 1997.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Authors

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

The objective of the present work is to compare the behavior of the passive film on iron with artificial passive films (thin sputter-deposited films of iron oxides on inert substrates). In situ XANES measurements were used to monitor both dissolution and changes in the valence state of passive films on iron during cathodic reduction in borate buffer and in NaOH. Reductive dissolution of the passive film on iron proceeds by a very similar mechanism as has been found for artificial passive films (thin, sputter-deposited films of iron oxides on inert substrates)--i.e. including a conversion step of the passive film to a lower-valent oxide. With low reduction current densities, the dissolution process does not stop when the metal is exposed but can proceed as active metal dissolution. In NaOH, no or very minor material loss takes place during reduction due to the insolubility of Fe(2+) species in the alkaline solution. By potential stepping of a thin film iron sample between reduction and oxidation range of the passive film, a conversion of the whole sample from metallic film into an oxide film can be achieved.

Physical Description

13 p.

Notes

OSTI as DE98000296

Source

  • 192. meeting of the Electrochemical Society and 48. annual meeting of the International Society of Electrochemistry, Paris (France), 31 Aug - 5 Sep 1997

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Other: DE98000296
  • Report No.: BNL--64151
  • Report No.: CONF-970805--
  • Grant Number: AC02-76CH00016
  • DOI: 10.2172/537262 | External Link
  • Office of Scientific & Technical Information Report Number: 537262
  • Archival Resource Key: ark:/67531/metadc689999

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • October 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

Description Last Updated

  • Nov. 9, 2015, 12:37 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 2
Total Uses: 10

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Schmuki, P.; Virtanen, S.; Boehni, H.; Isaacs, H.S.; Ryan, M.P. & Oblonsky, L.J. In situ XANES study of the cathodic reduction behavior of the passive film on iron and artificial passive films, report, October 1, 1997; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc689999/: accessed November 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.