| 简介 |
PROBLEM TO BE SOLVED : To provide ceramic materials with relatively high resistance to wetting by various liquids, articles made of these materials, methods for making these articles and materials, and methods for protecting articles using coatings made from these materials.
SOLUTION : One embodiment is a material comprising a primary oxide and a secondary oxide. The primary oxide comprises cerium and hafnium. The secondary oxide comprises a secondary oxide cation selected from the group consisting of the rare earth elements, yttrium, and scandium. Another embodiment is a material comprising a primary oxide and a secondary oxide. The primary oxide comprises cerium or hafnium. The secondary oxide comprises (i) praseodymium or ytterbium, and (ii) another cation selected from the group consisting of the rare earth elements, yttrium, and scandium.
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