Chapter 25. Improved Composite Powder Fabrication
- John B. Wachtman Jr
Published Online: 26 MAR 2008
Copyright © 1991 The American Ceramic Society, Inc.
Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 9/10
How to Cite
Stiglich, J. J., Sherman, A. J., Williams, B. E. and Kaplan, R. B. (1991) Improved Composite Powder Fabrication, in Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313848.ch25
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1991
Print ISBN: 9780470375105
Online ISBN: 9780470313848
Recent development work at Ultramet has led to renewed interest in the use of fluidized-bed particle coating technology for the fabrication of improved ceramic, metal, and composite powders. Using fluidized-bed chemical vapor deposition (CVD) technology, multiphase powders with sintering aids, liquid metal binders, bond coats, ceramics, and/or metals can be applied uniformly over particle surfaces, resulting in 100% dispersions of second phase materials. Precise control over concentration and morphology results in superior powder properties and allows the fabrication of composites through plasma spray, injection molding, and extrusion without segregation of constituents. The combination of these advanced powders and proper consolidation techniques can give precise control over grain boundary properties, reduce defect populations, and allow more rapid and cost-efficient consolidation.