Manufacturing method for phase-separated glass, and phase-separated glass

Patent metadata

Field	Value
Publication number	US-2017107142-A1
Application number	US-201615395025-A
Country	US
Kind code	A1
Filing date	Dec 30, 2016
Priority date	Oct 12, 2012
Publication date	Apr 20, 2017
Grant date	—

Abstract

The present invention relates to a method for producing phase-separated glass, sequentially including a melting step of melting a glass, a phase separation step of separating phases in the glass, and a shaping step of shaping the glass, and to the phase-separated glass obtained by the production method.

First claim

1 - 15 . (canceled)

16 : A phase-separated glass, having a structure satisfying Equation (1):
( dL−dS )/ dA≧ 1.0  (1),
where, for particles having a diameter of 100 nm or more generated by phase separation, dA represents an average particle diameter of all the particles, dL represents an average value of particle diameter of 10% from larger particle diameter, and dS represents an average value of particle diameter of 10% from smaller particle diameter.

17 : The phase-separated glass according to claim 16 ,
wherein dA is more than 0.2 μm.

18 : The phase-separated glass according to claim 16 ,
wherein the glass is an alkali silicate glass and comprises a total of 6% by mass or more of Na 2 O and K 2 O, and 0.5% by mass or more of P 2 O 5 .

19 : The phase-separated glass according to claim 16 ,
wherein the glass comprises at least one of CaO and BaO and a total content of CaO and BaO is less than 6% by mass.

20 : The phase-separated glass according to claim 16 , comprising, in terms of an oxide-based mole percentage, SiO 2 in a range of 50% to 80%, Al 2 O 3 in a range of 0% to 10%, B 2 O 3 in a range of 0% to 7%, MgO in a range of 2% to 30%, at least one selected from ZrO 2 , P 2 O 5 , TiO 2 , and La 2 O 3 in a range of 0.5% to 10% in total, and Na 2 O in a range of 1% to 17%.

21 : The phase-separated glass according to claim 16 , comprising, in terms of an oxide-based mole percentage, SiO 2 in a range of 50% to 80%, Al 2 O 3 in a range of 0% to 10%, B 2 O 3 in a range of 0% to 4%, MgO in a range of 5% to 30%, at least one selected from ZrO 2 , P 2 O 5 , TiO 2 , and La 2 O 3 in a range of 0.5% to 10% in total, and Na 2 O in a range of 1% to 17%.

22 : The phase-separated glass according to claim 16 ,
wherein a light transmittance at a thickness of 1 mm and at each wavelength of a wavelength of 800 nm, a wavelength of 600 nm, and a wavelength of 400 nm is 50% or less.

23 : The phase-separated glass according to claim 16 ,
wherein a light transmittance at a thickness of 1 mm and at a wavelength of 1,000 nm is 50% or less.

24 : The phase-separated glass according to claim 16 ,
wherein a ratio of a maximum value Tmax to a minimum value Tmin of a light transmittance at a thickness of 1 mm and at a wavelength in a range of 800 nm to 400 nm is 50 or less.

25 : A chemically-strengthened glass obtained by a process comprising: carrying out an ion exchange treatment on the phase-separated glass according to claim 16 .

26 : An electronic device chassis, comprising:
the phase-separated glass according to claim 16 .

27 : An electronic device chassis, comprising:
the chemically-strengthened glass according to claim 25 .

Assignees

• Asahi Glass Co Ltd

Inventors

• Miyasaka Junko
• Ohara Seiki
• Sakagami Takahiro

Classifications

• C03C4/18

  for ion-sensitive glass · CPC title

• C03C2204/04

  Opaque glass, glaze or enamel · CPC title

• C03C10/0054

  containing PbO, SnO2, B2O3 · CPC title

• C03C21/002

  to perform ion-exchange between alkali ions (C03C21/005 takes precedence) · CPC title

• C03C10/0045 Primary

  containing SiO2, Al2O3 and MgO as main constituents · CPC title