Ceramic-metal and Ceramic-intermetallic Composites by Reactive Processing

Editor(s)

Jessen, Todd and Ustundag, Ersan

Abstract

Ceramic-metal and ceramic-intermetallic composites were prepared by reactive hot pressing. The ceramic to metal ratio of each composition was set by the stoichiometry of a thermodynamically favorable displacement reaction. The powder mixing method and the heating rate during hot pressing were found to have a profound influence on the final microstructure and properties of hot pressed composites. The best composites, judged by mechanical properties, were produced by hot pressing attrition milled precursors using l°C/min heating rates. The four-point bend strength, fracture toughness, Young's modulus, and hardness were measured for Al2O3-MoSi2, Al2O3-Ni, and Al2O3-Nb composites.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Dense Mullite Noncomposites; Pulse Electric Current; Densification Behavior; Microstructural Analyses; Nano-Scale Dispersion

International Standard Serial Number (ISSN)

0196-6219

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2008 John Wiley & Sons, Inc., All rights reserved.

Publication Date

01 Mar 2008

Link to Full Text

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