Structural, thermal and mechanical properties of aluminum nitride ceramics with CeO2 as a sintering aid
| Autor: | Archana U. Chavan, Ha-Ni Im, Hyen-Seok Choi, Sun-Ju Song, Yu-Mi Kim |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Process Chemistry and Technology Doping Sintering chemistry.chemical_element 02 engineering and technology Nitride 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Thermal conductivity chemistry Aluminium visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Relative density Ceramic Composite material 0210 nano-technology |
| Zdroj: | Ceramics International. 42:11519-11524 |
| ISSN: | 0272-8842 |
| Popis: | AlN ceramics have been prepared with CeO 2 as a sintering aid at a sintering temperature of 1900 °C. The effect of CeO 2 contents on the microstructure, density, thermal conductivity and hardness was investigated. Addition of CeO 2 exerted a significant effect on the densification of AlN ceramics and hence on the microstructure. Thermal conductivity of AlN ceramics increased with CeO 2 content and was greater than that of Y 2 O 3 -doped AlN ceramics at a similar sintering temperature. The resulting AlN ceramics with 1.50 wt% of CeO 2 had the highest relative density of 99.94%, thermal conductivity of 156 W m −1 K −1 and hardness of 72.46 kg/mm 2 . |
| Databáze: | OpenAIRE |
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