Transparent MgAl2O4 Spinel Ceramics Produced by HIP Post-Sintering
| Autor: | Koji Tsukuma |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Materials science
Metallurgy Spinel Sintering chemistry.chemical_element Optical transmittance General Chemistry engineering.material Condensed Matter Physics Microstructure Grain growth chemistry Hot isostatic pressing visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium engineering Ceramic Boron |
| Zdroj: | Journal of the Ceramic Society of Japan. 114:802-806 |
| ISSN: | 1882-1022 0914-5400 |
| DOI: | 10.2109/jcersj.114.802 |
| Popis: | Transparent MgAl 2 O 4 spinel ceramics were fabricated by hot isostatic pressing of the sintered materials composed of fine grains. Since the fine-grained sintered materials were difficult to obtain from pure powders at low temperatures, the additives reducing sintering temperatures were examined. As a result, a small addition of boron oxides (0.05-0.5 mass %-B 2 O 3 ) was found to be very effective. The influence of boron oxides on the microstructure was investigated. The restriction of anomalous grain growth was important for transparency. The samples added with 0.15 mass%-B 2 O 3 showed high optical transmittance (80% with 1 mm thick). |
| Databáze: | OpenAIRE |
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