Chapter 23. Toughening in Metal Particulate-Glass Ceramic Composites
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1989 The American Ceramic Society, Inc.
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
Yoder, P. L., Jessen, T. L. and Mecholsky Jr., J. J. (1989) Toughening in Metal Particulate-Glass Ceramic Composites, 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.ch23
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1989
Print ISBN: 9780470374863
Online ISBN: 9780470310557
- chemical vapor deposition;
- fiber-reinforced ceramic composites;
- chemical vapor infiltration;
- high fracture toughness;
- carbon-carbon composites
Fe-Ni-Co metal particles were incorporated into the parent glass of a mica-containing glass ceramic (MACOR®). These composites were then heat treated to form glass ceramic-metal (GCM) composites. Fracture toughness, hardness, and elastic modulus were measured as a function of volume fraction and crystallization parameters for the GCM composite. The toughness of the glass composite (∼0.9 MPa • m1/2) was increased 40% over that of the glass alone (0.6 MPa • m1/2) for a 10 vol% composite with a corresponding decrease in the hardness and an increase in the elastic modulus. The toughness of the glass ceramic-10 vol% metal composite (∼2.0 MPa • m1/2)-was 30% higher than the glass ceramic alone and over 200% higher than the glass alone. Thus, for these composites, toughening appears to be additive. Because of preferential crystallization around the metal particles, increased oxidation resistance of the metal was observed for the GCM composite.