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US 8,557,010 B2Granted
Fused grains of oxides comprising Al, Ti, Si and ceramic products comprising such grains
AssigneeSaint-Gobain Centre De Recherches Et D'Etudes Europeen
InventorStephane Raffy
Life of this patent
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Abstract
Fused particles containing, by weight percent: more than 15% but less than 55% of Al2O3; more than 20% but less than 45% of TiO2; more than 3% but less than 30% of SiO2; less than 20%, in total, of at least one oxide selected from the group consisting of ZrO2, Ce2O3, and HfO2; less than 1% of MgO; and more than 1% but less than 15%, in total, of at least one selected from the group consisting of CaO, Na2O, K2O, SrO, B2O3, and BaO. Also, a ceramic product or material obtained by sintering the fused particles.
Claims21
Fused particles comprising, by weight percent:
- more than 15% but less than 55% of Al2O3;
- more than 20% but less than 45% of TiO2;
- more than 3% but less than 30% of SiO2;
- less than 20%, in total, of at least one selected from the group consisting of ZrO2, Ce2O3, and HfO2;
- less than 1% of MgO;
- more than 1% but less than 15%, in total, of at least one selected from the group consisting of CaO, Na2O, K2O, SrO, B2O3, and BaO,
- wherein the weight percents are based on a sum of all oxides being 100 wt %,
- wherein the fused particle is obtained by melting the Al2O3 the TiO, the SiO2, less than 20%, in total, of at least one selected from the group consisting of ZrO2, Ce7O3, and HfO2;
- less than 1% of MgO;
- more than 1% but less than 15%, in total, of at least one selected from the group consisting of CaO, Na2O, K7O, SrO, B7O3, and BaO to a molten liquid, cooling the molten liquid into a solid mass, and grinding the solid mass to produce the fused particle.
7 more elements
Dependencies are inferred from the claim text.