Effect of rare-earth chromites on sintering of magnesia
- Ural Polytechnical Institute, Ekaterinburg (Russian Federation)
The effect of neodymium, cerium, lanthanum, and ytrrium chromites, added in amounts of not more than 8%, on the sintering of magnesia in air and in vacuum has been studied. On addition of rare-earth chromites, the initial magnesia is sintered to a density of 0.98. By their sintering action, these chromites fall into the following sequence: neodymium chromite-lanthanum chromite-yttrium chromite-cerium chromite. The highest density (0.98-0.99) and the lowest porosity (1-2%) are obtained on addition of 2% of neodymium chromite to magnesia. The process of sintering of magnesia is accompanied by an increase in the size of periclase crystals from 12 to 38-56 {mu}m.
- OSTI ID:
- 103023
- Journal Information:
- Refractories, Vol. 35, Issue 1-2; Other Information: PBD: Sep 1994; TN: Translated from Ogneupory; No. 1, 2-4(Jan 1994)
- Country of Publication:
- United States
- Language:
- English
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