Fast fabrication of SiC particulate-reinforced SiC composites by modified PIP process using spark plasma sintering – effects of green density and heating rate
| Autor: | Jian Gu, Heesoo Lee, Viet Hung Vu, Sea-Hoon Lee, Jun-Seop Kim, Jian Yang |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Fabrication Materials science Composite number Spark plasma sintering Sintering 02 engineering and technology 021001 nanoscience & nanotechnology Ceramic matrix composite 01 natural sciences visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Relative density Thermal stability Ceramic Composite material 0210 nano-technology |
| Zdroj: | Journal of the European Ceramic Society. 41:4037-4047 |
| ISSN: | 0955-2219 |
| Popis: | SiC particulate-reinforced SiC ceramic matrix composites (SiCp/SiC) were fabricated by a modified polymer infiltration and pyrolysis (PIP) process using spark plasma sintering (SPS). The effects of pyrolysis conditions, green density, and polymer infiltration method on the densification and properties of the SiCp/SiC were investigated. SiCp/SiC with high relative density up to 88.06 % was fabricated after 4 PIP cycles by adopting high green density of SiC pellet (76.5 %) provided from drying the high solid loaded (70 vol. %) SiC slurry and fast SPS pyrolysis. The highest hardness of 21.05 ± 2.4 GPa was achieved for the as-fabricated SiCp/SiC, and the hardness value increased up to 23.99 ± 1.8 GPa after heat treatment at 2000℃. The improvement was attributed to the thermally stable SiC fillers, and partial sintering between the fillers and precursor derived ceramics (PDC) matrix. The excellent mechanical property, thermal stability, and short processing time render the SiCp/SiC composite a challenging candidate for high-temperature application. |
| Databáze: | OpenAIRE |
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