Synthesis of Silicon Carbide Ceramics Using Chemically Modified Polycarbosilanes as a Compaction Binder
| Autor: | Koichi Kikuta, Yuichi Sawai, Sachiko Okuzaki, Yoshiyuki Yasutomi, Shin-ichi Hirano, Yuji Iwamoto |
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| Rok vydání: | 2004 |
| Předmět: |
Yield (engineering)
Materials science Compaction engineering.material chemistry.chemical_compound Coating chemistry Flexural strength visual_art Materials Chemistry Ceramics and Composites engineering Silicon carbide visual_art.visual_art_medium Side chain Ceramic Composite material Oxidation resistance |
| Zdroj: | Journal of the American Ceramic Society. 82:2121-2125 |
| ISSN: | 1551-2916 0002-7820 |
| Popis: | A chemically modified polycarbosilane (PC) containing organofluoric groups (PCOCF) has been synthesized from PC and fluoroalkylmethyldimethoxysilane. PCOCF acts as an efficient compaction binder for SiC powders and as a coating material with excellent oxidation resistance in wet air. PCOCF-coated SiC powders also show excellent packing properties because of the organofluoric side chains, which give highly dense green compacts. PCOCF provides a high ceramic yield of 75% and highly dense SiC ceramics. Four-point bending strength increases and the scatter in strength values decreases significantly by PCOCF coating. |
| Databáze: | OpenAIRE |
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