Agc Inc.

Asahi Glass Company, Limited

Kosho Akatsuka

Hiroyuki Hijiya

Satoshi Ogami

Kazutaka Ono

Seiki Ohara

Takahiro Sakagami

Tomonori Ogawa

Junko Miyasaka

Takato Kajihara

Manuel Reyes Diaz

The present invention relates to a crystallized glass including a crystalline phase consisting of Ba—Si—O, in which the crystallized glass includes Li, and crystallinity of Li-based crystals contained in the crystalline phase is 20% or lower as represented by weight %, a high-frequency substrate including the crystallized glass, and a manufacturing method for a crystallized glass including a crystalline phase consisting of Ba—Si—O, the method including: obtaining an amorphous glass by melt-shaping a material containing BaO and SiO; and crystallizing the amorphous glass by holding the amorphous glass at a treatment temperature of 600° C. or higher and lower than 1,000° C.

Crystallized glass, high-frequency substrate, and method for manufacturing crystallized glass

The present invention relates to a chemically strengthened glass, in which CTand CTsatisfy CT/CT&#x2264;0.85, the CTsatisfies CT&#x3e;&#x2212;38.7&#xd7;ln(t/1000)+48.2 [MPa] and an internal energy density rE satisfies rE&#x2264;23.3&#xd7;t/1000+15 [kJ/m]. CS is a surface compressive stress value [MPa], &#x3c3; (x) is a compressive stress value [MPa] at a position x in a depth direction, DOL is a compressive stress depth [&#x3bc;m], and t is a sheet thickness [&#x3bc;m].

Chemically strengthened glass

A process for producing a chemically strengthened glass is provided. The method for producing a chemically strengthened glass includes subjecting a phase-separated glass to an ion exchange treatment. A chemically strengthened glass which is obtained by the process and a phase-separated glass which has been subjected to the ion exchange treatment are also provided.

Process for producing chemically strengthened glass

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Tokyo, Japan

Kosho Akatsuka