Skip navigation
  • Home
  • Browse
    • Communities
      & Collections
    • Browse Items by:
    • Publication Date
    • Author
    • Title
    • Subject
    • Department
  • Sign on to:
    • My MacSphere
    • Receive email
      updates
    • Edit Profile


McMaster University Home Page
  1. MacSphere
  2. Open Access Dissertations and Theses Community
  3. Open Access Dissertations and Theses
Please use this identifier to cite or link to this item: http://hdl.handle.net/11375/7731
Title: Diffusional Growth of Oxide Scales on Cobalt-Iron Alloys
Authors: Mayer, Peter
Advisor: Smeltzer, W.W.
Department: Metallurgy and Materials Science
Keywords: Materials Science and Engineering;Metallurgy;Materials Science and Engineering
Publication Date: Oct-1973
Abstract: <p>In this thesis the results of an experimental investigation and theoretical analysis of high temperature oxidation properties of cobalt-iron alloys are presented. Cobalt-iron alloys containing up to 70% iron were subjected to pure oxygen atmospheres with pressures ranging from 10ˉ⁴ to 1 atm at 1200°C. The reaction kinetics, oxide scale morphologies and spatial distributions of the reacting species in the oxidized specimens were determined. It has been established that the reaction is controlled by metal diffusion through the oxide scales separating the reactants. A ternary diffusion model was invoked to describe the high temperature oxidation behaviour of the investigated alloys. The consistency of the model is tested by evaluating the concentration profiles from metal diffusion coefficients and nonstoichiometry of ternary oxides using the Wagner phenomenological equations. The comparison of the results from theoretical calculation suggests that the theoretical analysis adapted in this work is consistent with the actual physical and chemical processes governing the oxidation reaction.</p>
URI: http://hdl.handle.net/11375/7731
Identifier: opendissertations/2988
4004
1428592
Appears in Collections:Open Access Dissertations and Theses

Files in This Item:
File SizeFormat 
fulltext.pdf
Open Access
3.9 MBAdobe PDFView/Open
Show full item record Statistics


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

Sherman Centre for Digital Scholarship     McMaster University Libraries
©2022 McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8 | 905-525-9140 | Contact Us | Terms of Use & Privacy Policy | Feedback

Report Accessibility Issue