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Effect of thermally grown oxides on colour development of stainless steel

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posted on 27.03.2015 by Rebecca Higginson, Charles Jackson, E.L. Murrell, P.A.Z. Exworthy, Roger J. Mortimer, David Worrall, Geoffrey Wilcox
Stainless steels are used in an array of applications where their ability to take on colour is of aesthetic value. Although thermal colouring (heat tinting) is known, particularly in terms of its effect on welds, the surface development of thermally coloured stainless steel has not been considered in detail. This paper demonstrates the colour development of a bright annealed 304 stainless steel with time at temperature. The colour development has been quantified using colour spectrophotoscopy and the colour related to the growth of surface oxide features by scanning electron microscopy and the chemical profiles by X-ray photoelectron spectroscopy (XPS). There is a clear development of both the oxide thickness and chemistry, with increasing time with small nodules being the main features seen across the surface of the samples with time. The oxides have been shown to comprise of an outer iron rich oxide and an inner chromium/iron spinel layer.

History

School

  • Science

Department

  • Chemistry

Published in

MATERIALS AT HIGH TEMPERATURES

Volume

32

Issue

1-2

Pages

113 - 117 (5)

Citation

HIGGINSON, R.L. ... et al, 2015. Effect of thermally grown oxides on colour development of stainless steel. Materials at High Temperatures, 32 (1-2), pp.113-117.

Publisher

© W. S. Maney & Son Ltd

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

ISSN

0960-3409

Language

en

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