Chapter 61. An Initial Comparison of X-Ray and NMR Computed Tomography for Detection of Organic Binder Distribution

  1. John B. Wachtman Jr.
  1. W. A. Ellingson1,
  2. P. S. Wong1,
  3. S. L. Dieckman1,
  4. J. P. Pollinger2,
  5. H. Yeh2 and
  6. M. W. Vannier3

Published Online: 26 MAR 2008

DOI: 10.1002/9780470310557.ch61

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 7/8

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 7/8

How to Cite

Ellingson, W. A., Wong, P. S., Dieckman, S. L., Pollinger, J. P., Yeh, H. and Vannier, M. W. (1989) An Initial Comparison of X-Ray and NMR Computed Tomography for Detection of Organic Binder Distribution, in A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310557.ch61

Author Information

  1. 1

    Materials and Components Technology Division Argonne National Laboratory Argonne, IL 60439

  2. 2

    Garrett Ceramic Components Division Allied-Signal Aerospace Company Torrance, CA 90509

  3. 3

    Mallinckrodt Institute of Radiology St. Louis, MO 63110

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780470374863

Online ISBN: 9780470310557

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Keywords:

  • chemical vapor infiltration;
  • garrett ceramic components division;
  • x-ray computed tomography;
  • nuclear magnetic resonance imaging;
  • chemical vapor deposition

Summary

Knowledge of the distribution of the organic binder materials used in the injection molding of ceramics is important because nonuniformity affects local densification rates and hence mechanical properties. Two noncontacting, noninvasive, nondestructive inspection methods-X-ray computed tomography (CT) and nuclear magnetic resonance tomography-have been applied to a set of Si3N4 specimens with discrete regions of known binder concentration ranging from 2-20 wt%. The results suggest that with current technology, X-ray CT is a more sensitive method, with the capability to detect variations of 1 wt% in binder content.