Centrifugal casting of Al2O3–15 wt.%ZrO2 ceramic composites
| Autor: | Takahiro Tanaka, Mikio Iwasa, Isao Kondoh, Pinggen Rao |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Aqueous solution
Fabrication Materials science Process Chemistry and Technology Microstructure Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound Distilled water chemistry visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Slurry Ammonium Ceramic Composite material Solid content |
| Zdroj: | Ceramics International. 29:209-212 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/s0272-8842(02)00107-4 |
| Popis: | Aqueous ceramic slurries with different solid contents (60, 70 and 78 wt.%) were prepared by mixing 85 wt.% low-temperature-sinterable high purity α-alumina and 15 wt.% ZrO 2 (3 mol% Y 2 O 3 ) in distilled water and a small amount of poly-carboxylic ammonium as the dispersion agent. Consolidation was performed by using a high-speed centrifugal casting process at 4000 rpm for 1 h. The result showed that the dispersion agent had a great influence on the viscosities of the slurries. It was also observed that the green and sintered densities of the Al 2 O 3 –15 wt.%ZrO 2 composites increased with the solid contents. Phase segregation could be effectively eliminated when the solid content of the slurry was 78 wt.%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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