Crystallized glass, and method for producing crystallized glass
AssigneeKabushiki Kaisha Ohara
InventorsToshitaka Yagi, Naoyuki Goto
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Abstract
Provided are SiO2—Al2O3-based or Li2O—Al2O3—SiO2-based crystallized glass which has various properties intrinsic to the crystallized glass of the type and which contains an arsenic component or an antimony component in an amount as small as possible or does not contain an arsenic component and an antimony component; and a method for producing the crystallized glass. The crystallized glass contains components of SiO2 and Al2O3 (as oxides) and contains an SnO2 component (as oxide) and/or a CeO2 component (as oxide). Preferably, the glass contains from 0.01 to 5.0% (as oxide) of an SnO2 component and/or from 0.01 to 5.0% (as oxide) of a CeO2 component.
Claims16
Crystallized glass comprising, in terms of percent by mass of oxide:
- SiO2 component (as oxides) from 50 to 62%,
- Al2O3 component (as oxides) from 22 to 26%,
- at least one of SnO2 component (as oxide) and CeO2 component (as oxide),
- wherein SnO2 from 0.01 to 5.0% and/or CeO2 from 0.01 to 5.0%
- P2O5 component (as oxides) from 5 to 10%,
- Li2O component (as oxide) from 0 to 5%,
- MgO component (as oxide) from 0 to 4%,
- ZnO component (as oxide) from 0 to 4%,
- CaO component (as oxide) from 0.3 to 4%, and
- BaO component (as oxide) from 0 to 4%,
- wherein the crystallized glass contains neither of As2O3 component (as oxide) and Sb2O3 component (as oxide).
Dependencies are inferred from the claim text.