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The Characterization of Alpha and Intermediate Aluminum Oxide Mixtures by Semi-Automated XRD

Published online by Cambridge University Press:  06 March 2019

John R. Burleson
John R. Burleson*
Affiliation:
AC Spark Plug Division, General Motors Corporation, Flint, Michigan 48556
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Abstract

Intermediate aluminum oxides (aluminas) have broad X-ray diffraction (XRD) peaks. Many of the phases have similar XRD patterns with overlapping of major peaks. To characterize a multi-component alumina mixture several regions of multiple overlapping peaks are examined. Each region is integrated to a single sum without regard for individual peaks. The integrated regions are applied to various ratio functions obtained from single component standards. By using an iterative technique, the functions converge to yield weight fractions for up to six alumina phases.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 24: Twenty-Ninth Annual Conference on Applications of X-ray Analysis, August 4-8, 1980 , 1980 , pp. 271 - 275
Copyright
Copyright © International Centre for Diffraction Data 1980

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References

1. JCPDS, Powder Diffraction File, Alphabetical Index Inorganic Materials, 29:15 (1979)Google Scholar
2. Wefers, K. and Bell, G. “Oxides and Hydroxides of Aluminum”, p. 38, Alcoa Research Laboratories, Technical Paper No. 19, 1972Google Scholar
3. ibid. P. 43Google Scholar
4. Francis, Thomas L., Alcoa Research Laboratories, Private Communication, Jan., 1977Google Scholar