Hostname: page-component-745bb68f8f-kw2vx Total loading time: 0 Render date: 2025-02-05T06:35:28.367Z Has data issue: false hasContentIssue false
  • English
  • Français

Vacuum Free-Fall Method for Preparation of Randomly Oriented XRD Samples

Published online by Cambridge University Press:  06 March 2019

Jim Ludlam ,
Brad Jacobs  and
Paul K. Predecki
Jim Ludlam
Affiliation:
Department of Engineering University of Denver Denver, CO 80208
Brad Jacobs
Affiliation:
Department of Engineering University of Denver Denver, CO 80208
Paul K. Predecki
Affiliation:
Department of Engineering University of Denver Denver, CO 80208
Get access

Extract

Quantitative phase analysis by XRD requires the attainment of (1) random crystallite orientation and (2) homogeneous and intimate mixing of the constituent phases in the samples. These two requirements must also be met in the preparation of random composite materials, particularly those containing randomly-oriented fibers or whiskers.

The two most common methods for producing random crystallite orientation are spray drying and the air suspension method. In the latter, an air suspension of the crystallites is rapidly collected onto a glass fiber filter. The crystallites then assume the random orientation of the filter fibers on which they are deposited.

Type
IX. Qualitative and Quantitative Phase Analysis Diffraction Applications
Information
Advances in X-Ray Analysis , Volume 32: Thirty-Seventh Annual Conference on Applications of X-ray Analysis, August 1-5, 1988 , 1988 , pp. 625 - 628
Copyright
Copyright © International Centre for Diffraction Data 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

(1) Calvert, L.D., Sirianni, A.F., Gainsford, G.J. and Hubbard, C.R., Adv. X-Ray Ana, 26, 105–110 (1983)Google Scholar
(2) Davis, B.L. and Cho, N-K.,. Atmos. Environ. 11, 73–85 (1977)Google Scholar
(3) Davis, B.L., Adv. X-Ray Ana, 27. 339–348 (1984)Google Scholar
(4) Pattern provided by Smith, D.K., Pennsylvania State Univ.Google Scholar