In situ boron carbide–titanium diboride composites prepared by mechanical milling and subsequent Spark Plasma Sintering
| Autor: | Amiya K. Mukherjee, Dongtao Jiang, Sheldon J. Cytron, C. Unuvar, Dina V. Dudina, Dustin M. Hulbert |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Mechanical Engineering Metallurgy Sintering Spark plasma sintering chemistry.chemical_element Boron carbide Microstructure Ceramic matrix composite Carbide chemistry.chemical_compound chemistry Mechanics of Materials General Materials Science Composite material Boron Titanium diboride |
| Zdroj: | Journal of Materials Science. 43:3569-3576 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/s10853-008-2563-8 |
| Popis: | Boron carbide–titanium diboride composites were synthesized and consolidated by Spark Plasma Sintering (SPS) of mechanically milled elemental powder mixtures. The phase and microstructure evolution of the composites during sintering in the 1,200–1,700 °C temperature range was studied. With increasing sintering temperature, the phase formation of the samples was completed well before full density was achieved. The distribution of titanium diboride in the sintered samples was significantly improved with increasing milling time of the Ti–B–C powder mixtures. A bulk composite material of nearly full density, fine uniform microstructure, and increased fracture toughness was obtained by SPS at 1,700 °C. The grain size of boron carbide and titanium diboride in this material was 5–7 and 1–2 μm, respectively. |
| Databáze: | OpenAIRE |
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