Chapter 4. Green Testing of Pressed Compacts
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
DOI: 10.1002/9780470314272.ch4
Copyright © 1993 The American Ceramics Society
Book Title
A Collection of Papers on Engineering Aspects of Fabrication of Ceramics: Ceramic Engineering and Science Proceedings, Volume 14, Issue 11/12
Additional Information
How to Cite
Walker, W. J. and Reed, J. S. (2008) Green Testing of Pressed Compacts, in A Collection of Papers on Engineering Aspects of Fabrication of Ceramics: Ceramic Engineering and Science Proceedings, Volume 14, Issue 11/12 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314272.ch4
Publication History
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1993
Book Series:
ISBN Information
Print ISBN: 9780470375280
Online ISBN: 9780470314272
- Summary
- Chapter
- References
Keywords:
- pneumatic;
- polymers;
- temperatures;
- microstructure;
- desiccator
Summary
Green compacts were prepared by pressing spray-dried alumina containing different binders. The diametral compression test was used to measure green tensile strength using a relatively inexpensive pneumatic crush strength tester. Modifications to the strength tester were made to measure the force needed to eject compacts from the die. The ejection pressure was very dependent on die wall lubrication provided by the binder system. Control of relative humidity during testing proved critical for reliable strength data. Green strength of compacts was observed to depend strongly on the joining of pressed granules at interfaces and was less dependent on the intrinsic binder film strength.