Wetting resistant materials and articles made therewith
US7901798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2009 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Sep 18, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ceramic materials with relatively high resistance to wetting by various liquids, such as water, are presented, along with articles made with these materials, methods for making these articles and materials, and methods for protecting articles using coatings made from these materials. One particular embodiment is an article that comprises a coating having a surface connected porosity content of up to about 5 percent by volume. The coating comprises a material that comprises a primary oxide and a secondary oxide, wherein (i) the primary oxide comprises a cation selected from the group consisting of cerium, praseodymium, terbium, and hafnium, and (ii) the secondary oxide comprises a cation selected from the group consisting of the rare earth elements, yttrium, and scandium. The material is transparent to electromagnetic radiation of at least one type selected from the group consisting of ultraviolet radiation, visible light, and infrared radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.