Please use this identifier to cite or link to this item: https://doi.org/10.1002/sia.1457
Title: Investigation of the initial reaction of the alloy Co86Cr14 and its constituent metals with oxygen using secondary ion mass spectrometry
Authors: Siddle, A.
Castle, J.E.
Hultquist, G.
Tan, K.L. 
Keywords: Co86Cr14 alloy
Oxidation
SIMS
Issue Date: Oct-2002
Source: Siddle, A., Castle, J.E., Hultquist, G., Tan, K.L. (2002-10). Investigation of the initial reaction of the alloy Co86Cr14 and its constituent metals with oxygen using secondary ion mass spectrometry. Surface and Interface Analysis 33 (10-11) : 807-814. ScholarBank@NUS Repository. https://doi.org/10.1002/sia.1457
Abstract: The initial oxidation of Co86Cr14 and its constituent metals is investigated using an in situ dynamic secondary ion mass spectrometry (SIMS) technique. Simultaneous analysis and controlled formation of oxidation products, rather than just analysis, allows the oxidation to be studied at the very early stages of the process, i.e. when the oxidation product is of submonolayer extent. The technique, initiated by Hultquist5-7 for the study of pure metals in various in situ environments, involves exposing a sputter-cleaned sample to various partial pressures of oxygen in the SIMS chamber and achieving an equilibrium between the formation and removal of the reaction products under the normal dynamic SIMS conditions. Here, the study is extended to give some insight into the interpretation of the SIMS data obtained by this method, and to determine a model for the oxidation of materials. An empirical model is derived for the oxidation of cobalt. A theoretical model is also derived based on the Langmuir model, but allowing for the more energetic nature of ion bombardment and oxide removal. The theoretical and empirical models are indistinguishable at low oxygen pressures. The cobalt component in the alloy Co86Cr14 behaves in a similar way to that of the pure metal, which suggests that the cobalt oxidizes independently of the chromium in the alloy.
Source Title: Surface and Interface Analysis
URI: http://scholarbank.nus.edu.sg/handle/10635/96984
ISSN: 01422421
DOI: 10.1002/sia.1457
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

3
checked on Mar 7, 2018

WEB OF SCIENCETM
Citations

3
checked on Dec 13, 2017

Page view(s)

22
checked on Mar 9, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.