Comminution-Based Powders for Technical Ceramic Applications

Venkataraman, K. S. ; Narayanan, K. S. ; Bartges, Marcia L.
Organization: Society for Mining, Metallurgy & Exploration
Pages: 15
Publication Date: Jan 1, 1992
The starting powders' physicochemical properties and consistency are essential for technical ceramic products to meet their performance specifications. The need for finer and more consistent powders has opened new technologies for synthesizing powders from atoms and molecules. However, submicron and near-micron powders obtained from conventional comminution and classification techniques are still competitive. This paper shows several examples from electronic ceramic applications of how we can use powder characteristics for micromanaging by design the ceramic properties such as the green and fired densities, slurry rheology, shrinkage during sintering, and the microstructure of the sintered bodies. The cross-disciplinary nature of the technology requires that the researcher not only should have a firm grip on the fundamentals of one or more disciplines, but also should be generally aware of the intricacies of other disciplines as well.
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