MgO—Al2O3—SiO2-based crystallizable glass and crystallized glass, and manufacturing method thereof
US8431498B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 25, 2010 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Oct 25, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C10/0063
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention provides a crystallizable glass, a crystallized glass, and manufacturing methods thereof. The crystallizable glass can be crystallized in a short period of time, and can maintain its glass shape and its surface condition during a crystallization process. The crystallized glass has good mechanical strength, an adequate thermal expansion coefficient that allows the crystallized glass to be used as a construction material, less content of alkali-metal oxides, and good chemical durability. The MgO—Al2O3—SiO2-based crystallizable glass and crystallized glass contain, by mass percent, 55.0-65.0% SiO2, 8.0-14.0% Al2O3, 10.0-20.0% MgO, 1.5-6.0% CaO, 1.0-2.2% Li2O, 0.7-3.0% Na2O, 2.5-4.0% K2O, and 1.5-3.0% F.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.