Title:
INORGANIC COMPOSITION ARTICLE
Document Type and Number:
WIPO Patent Application WO/2023/095454
Kind Code:
A1
Abstract:
Provided is an inorganic composition article obtained by reinforcing a crystallized glass and having a compressive stress layer on the surface, the compressive stress at a depth of 30 µm from an outermost surface being 120-320 MPa, and the crystallized glass comprising, as a main crystal phase, one or more types of crystal phases selected from α-cristobalite and an α-cristobalite solid solution, wherein in mass% calculated in terms of oxides, the content of an SiO2 component is 50.0-75.0%, the content of an Li2O component is 3.0-10.0%, the content of an Al2O3 component is from 5.0% to less than 15.0%, the content of a B2O3 component is from greater than 0% to 10.0% or less, the content of a P2O5 component is from greater than 0% to 10.0% or less, and a mass ratio of SiO2/(B2O3 + Li2O) is 3.0-10.0.
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Inventors:
YAGI TOSHITAKA (JP)
OGASAWARA KOHEI (JP)
KIKKAWA SAYA (JP)
MORI AYANO (JP)
OGASAWARA KOHEI (JP)
KIKKAWA SAYA (JP)
MORI AYANO (JP)
Application Number:
PCT/JP2022/037302
Publication Date:
June 01, 2023
Filing Date:
October 05, 2022
Export Citation:
Assignee:
OHARA KK (JP)
International Classes:
C03C21/00; C03C10/14
Domestic Patent References:
| WO2020179872A1 | 2020-09-10 |
Foreign References:
| JP2020033261A | 2020-03-05 | |||
| JP2002203309A | 2002-07-19 | |||
| JP2008254984A | 2008-10-23 | |||
| JP2021075463A | 2021-05-20 | |||
| US9731995B2 | 2017-08-15 |
Attorney, Agent or Firm:
HEIWA INTERNATIONAL PATENT OFFICE (JP)
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