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Applicability of Routine Methods of Crystallite Size Analysis*

  • Robert C. Rau (a1)

Abstract

Several methods for the routine determination of crystallite size by means of X-ray diffraction line-broadening have previously been reported. Although these techniques have proven useful and reliable when utilized with the single X-ray diffractometer and instrumental geometry used to originally develop the methods, it was not known whether other instruments would provide similar reliability. Therefore a study was performed to evaluate the applicability of routine methods of crystallite size analysis to other X-ray diffraction units. A series of six beryllium oxide powder specimens, whose average crystallite sizes ranged stepwise from about 35 to nearly 3000 Å, were used to test a number of X-ray diffractometers. By using a predetermined diffraction geometry for each instrument tested, measured crystallite sizes were found to be quite reproducible and well within the limits of experimental error. The testing procedure, instrumental conditions, and individual performance results are presented in this paper.

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*

Work performed under U.S. Atomic Energy Commission Contract AT(40-1)-2847.

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1. Rau, R. C., “Routine Crystallite-Size Determination by X-ray Diffraction Line Broadening,” Advances in X-ray Analysis, Vol. 5, University of Denver, Plenum Press, New York, 1962, pp. 104115.
2. Klug, H. and Alexander, L., X-ray Diffraction Procedures, John Wiley & Sons, Inc., New York, 1954, pp. 491538.
3. Rau, R. C., “Calcination of BeO from Basic Acetate Derived Be(OH)2,” presented at the Fall Meeting, Basic Science Division, American Ceramic Society, Columbus, Ohio, October 8-9, 1962.
4. Rosauer, E. A. and Handy, R. L., “Crystallite-Size Determination of MgO by X-ray Diffraction Line Broadening,” Iowa Academy of Science Meeting, Simpson.'College, Indianola, Iowa, April 14, 1961.
5. Bartram, S. F., “Crystallite-Size and Particle-Size Measurements on BeO Powders by X-ray Methods,” Advances in X-ray Analysis, Vol. 4, University of Denver, Plenum Press, New York, 1961, pp. 4062.

Applicability of Routine Methods of Crystallite Size Analysis*

  • Robert C. Rau (a1)

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