Colored translucent zirconia sintered body, its production process and its use
AssigneeTosoh Corporation
InventorsShoichi Yamauchi, Isao Yamashita, Koji Tsukuma
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Abstract
A colored translucent zirconia sintered body contains a transition metal element as a coloring agent, having a clear color tone and high transparency, and being excellent in both design properties and esthetic properties, and its production process. A colored translucent zirconia sintered body includes yttria in an amount of at least 6 mol % and at most 15 mol % and at least one member selected from the group consisting of iron, nickel, manganese, cobalt, chromium, copper and vanadium in an amount of at least 0.02 mol % and at most 0.5 mol % as calculated as oxides, and having a porosity of at most 1,000 ppm. The average crystal grain size is preferably at most 60 μm.
Claims11
A colored translucent zirconia sintered body having a crystalline phase, comprising yttria in an amount of at least 6 mol % and at most 15 mol % and at least one member selected from the group consisting a iron, nickle manganese, cobalt, chromium, copper and vanadium in an amount of at least 0.02 mol % and at most 0.6 mol % as calculated as oxides, and having a porosity of at most 1,000 ppm;
- wherein the crystalline phase is a cubic fluorite structure.
Dependencies are inferred from the claim text.