Fluorite-type ceramics for high-temperature power installations
| Autor: | O. G. Éllert, T. K. Runova, F. A. Akopov, A. S. Vlasov, E. E. Podkletnov, V. M. Novotortsev |
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| Rok vydání: | 1985 |
| Předmět: |
Materials science
Heating element Metallurgy Direct current Inorganic chemistry chemistry.chemical_element Conductivity Atmospheric temperature range Cerium chemistry Mechanics of Materials Electrical resistivity and conductivity visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic Refractory (planetary science) |
| Zdroj: | Glass and Ceramics. 42:204-207 |
| ISSN: | 1573-8515 0361-7610 |
| DOI: | 10.1007/bf00697306 |
| Popis: | Ceramics based on cerium-dioxide are used mainly as highly refractory electrical conducting materials in high-temperature power installations, and also for making heating elements. Additions of pentavalent cations to cerium dioxide have an alloying action, and in the temperature range 300-1600C significantly increase its conductivity. In this paper the authors report on efforts to determine the region of existence of a single-phase solution of Ta2O5 in CeO2, to select a composition having the maximum electric conductivity, and to study its magnetic properties. The authors conclude that to obtain highly refractory ceramics that are electrically conducting in a wide temperature range, material containing 97% CeO2 and 3% Ta2O5 should be used. They state that the totally electronic (n type) nature of the conductivity ensures stability in the properties of the ceramics during the transmission of a direct current, and that these materials can therefore be used in industrial power installations. |
| Databáze: | OpenAIRE |
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