15-01-2015 дата публикации
Номер: US20150018193A1
A glass-ceramic is disclosed, this glass-ceramic includes at least the following constituents (in mol % on oxide basis): SiO1-30, AlO0-20, BO0-25, TiO10-70, REO0-35, BaO 5-35, SiO+AlO+BO<25, where RE is lanthanum, another lanthanoid, or yttrium, and where Ti may be replaced in part, preferably up to 10%, by Zr, Hf, Y, Nb, V, Ta. A principal phase in the glass-ceramic is BaTiO 1. A glass-ceramic comprising at least the following constituents (in mol % on oxide basis):{'sub': '2', 'SiO1-30'}{'sub': 2', '3, 'AlO0-20'}{'sub': 2', '3, 'BO0-25'}{'sub': '2', 'TiO10-70'}{'sub': 2', '3, 'REO0-<5'}BaO 5-35{'sub': 2', '2', '3', '2', '3, 'SiO+AlO+BO<25'}wherein RE is selected from the group consisting of lanthanum, another lanthanoid, and yttrium, and wherein Ti may be replaced in part by at least one constituent selected from the group consisting of Zr, Hf, Nb, V, and Ta.2. The glass-ceramic of claim 1 , comprising at least the following constituents (in mol % on oxide basis):{'sub': '2', 'SiO2-20'}{'sub': 2', '3, 'AlO0-15'}{'sub': 2', '3, 'BO0-20'}{'sub': '2', 'TiO25-65'}{'sub': '2', 'ZrO1-15'}{'sub': 2', '3, 'REO0-<5'}BaO 10-30{'sub': 2', '2', '3', '2', '3, 'SiO+AlO+BO≦20,'}wherein RE is selected from the group consisting of lanthanum, another lanthanoid, and yttrium, and wherein Ti may be replaced in part by at least one constituent selected from the group consisting of Zr, Hf, Nb, V, and Ta.3. The glass-ceramic of claim 2 , comprising at least the following constituents (in mol % on oxide basis):{'sub': '2', 'SiO2-20'}{'sub': 2', '3, 'AlO0-15'}{'sub': 2', '3, 'BO0-5'}{'sub': '2', 'TiO40-65'}{'sub': '2', 'ZrO5-12'}{'sub': 2', '3, 'REO0-<5'}BaO 10-30{'sub': 2', '2', '3', '2', '3, '10≦SiO+AlO+BO≦20,'}wherein RE is selected from the group consisting of lanthanum, another lanthanoid, and yttrium, and wherein Ti may be replaced in part by at least one constituent selected from the group consisting of Zr, Hf, Nb, V, and Ta.4. The glass-ceramic of claim 1 , comprising at least the ...
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