Back to results
US 10,047,013 B2Granted
Zirconia-based monophase and multiphase materials
AssigneeCeramTec GmbH
InventorsMeinhard Kuntz, Kilian Friederich, Lukas Gottwik, Andreas Morhardt, Juliane Ehrlich
Life of this patent
Estimating the term…
Abstract
Zirconium oxide material and a sintered molded body produced from the material. The zirconium oxide is present in the tetragonal phase in an amount of 70 to 99.9 vol.-%. The tetragonal phase is chemically stabilized with rare-earth oxides. The sintered moldings can be used, e.g., in the medical field as implants or as dental prostheses.
Claims19
A zirconia material comprising:
- zirconia;
- and
- a chemical stabilizer;
- wherein 70 to 100 vol % of the zirconia is present in a tetragonal phase, and wherein the chemical stabilizer comprises at least one oxide of a rare earth metal and wherein the chemical stabilizer chemically stabilizes the tetragonal phase;
- wherein the content of zirconia is between 94 and 96 vol %;
- and
- wherein the zirconia material comprises a second main component is present with a volume amount between 4 and 6 vol %, wherein the second main component consists of a relative amount of more than 80 vol % strontium aluminate or lanthanum aluminate, and
- wherein the chemical stabilizer is selected from the group consisting of Sm2O3 and Gd2O3.
5 more elements
Dependencies are inferred from the claim text.