Polymeric precursors to refractory metal borides
| Autor: | J. D. Katz, G. Courtin, S. M. Kozmina, K. W. Dudeck, S. T. Schwab, C. A. Stewart, B. Bartram, W. J. Kroenke, E. J. Wuchina |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Zirconium
Materials science Mechanical Engineering Inorganic chemistry Refractory metals Oxide chemistry.chemical_element Borohydride Metal chemistry.chemical_compound chemistry Mechanics of Materials visual_art Borazine visual_art.visual_art_medium General Materials Science Ceramic Hafnium diboride |
| Zdroj: | Journal of Materials Science. 39:6051-6055 |
| ISSN: | 0022-2461 |
| DOI: | 10.1023/b:jmsc.0000041701.01103.41 |
| Popis: | Polymeric precursors to zirconium and hafnium diboride are described. Initial studies concentrated on carbothermal/borothermal reduction of metal alkoxides; however, improved results were obtained from oxide free-precursors prepared from the metal borohydride and borazine. The metal borides are obtained in good chemical and ceramic yield upon pyrolysis, and the polymeric precursors obtained through the reaction of borazine with the metal borohydride exhibit viscosities amenable to use as preceramic binders in powder processing. |
| Databáze: | OpenAIRE |
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