Sintered product with a cubic structure
AssigneeSaint-Gobain Centre De Recherches Et D'Etudes Europeen
InventorsGuillaume Bernard-Granger, Nassira Benameur
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Abstract
The invention relates to a sintered product containing: in mass percent based on oxides, more than 99.5% of a material having a cubic crystallographic structure for more than 95% of the mass thereof, known as a material with a cubic structure, and having a refractive index of less than 2.75 in the wavelength range between 0.2 μm and 5 μm; and more than 50 ppma of dopants which must contain titanium oxide TiO2 and at least one additional dopant selected from ZrO2, CaO, and MgO, in which said at least one additional dopant is different from the oxide(s) forming the material with a cubic structure, but can be MgO when the material with a cubic structure is spinel MgAl2O4.
Claims39
A sintered product comprising:
- in mass percent based on oxides, more than 99.5% of a material with a cubic structure, having a cubic crystallographic structure for more than 95% of the mass thereof, and having a refractive index of less than 2.75 in the wavelength range between 0.2 μm and 5 μm, and
- more than 50 ppma of dopants, which must contain titanium oxide TiO2 and at least one additional dopant selected from ZrO2, CaO and MgO, in which said at least one additional dopant is different from the oxide(s) forming the material with a cubic structure, but can be MgO when the material which has a cubic structure is spinel MgAl2O4.
Dependencies are inferred from the claim text.