Ceramic-metal and Ceramic-intermetallic Composites by Reactive Processing
Jessen, Todd and Ustundag, Ersan
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.
W. Fahrenholtz et al., "Ceramic-metal and Ceramic-intermetallic Composites by Reactive Processing," Ceramic Engineering and Science Proceedings, John Wiley & Sons, Inc., Mar 2008.
The definitive version is available at http://dx.doi.org/10.1002/9780470294628.ch79
Materials Science and Engineering
Keywords and Phrases
Dense Mullite Noncomposites; Pulse Electric Current; Densification Behavior; Microstructural Analyses; Nano-Scale Dispersion
Article - Journal
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