Mechanical properties of B4C–SiC composites fabricated by hot-press sintering
| Autor: | Woo Hyuk Choi, Yun-Soo Lim, Min Suk Kim, Hyungsun Kim, Sung Min So, Jongee Park, Kyoung Hun Kim, Joo Seok Park |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Process Chemistry and Technology Composite number Sintering Crystal growth 02 engineering and technology 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Carbide Flexural strength 0103 physical sciences Vickers hardness test Materials Chemistry Ceramics and Composites Relative density Composite material 0210 nano-technology |
| Zdroj: | Ceramics International. 46:9575-9581 |
| ISSN: | 0272-8842 |
| Popis: | We fabricated boron carbide-silicon carbide (B4C–SiC) composites by hot-press sintering without additives and evaluated the crystal phase, relative density, microstructure, and mechanical properties of the sintered body. When B4C and SiC were uniformly dispersed in the composite, crystal growth was inhibited, and a sintered body with a fine and uniform microstructure, with improved mechanical properties, was fabricated. The relative density of B4C–SiC composites sintered at temperatures lower than 2000 °C and 40 MPa of pressure exceeded 99.8%, and the bending strength and Vickers hardness at B4C 50 wt% were 645 MPa and 30.6 GPa, respectively. |
| Databáze: | OpenAIRE |
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