Manufacturing method for phase-separated glass, and phase-separated glass
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.
1. 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 particle diameter of largest 10% by number of all the particles, and dS represents an average particle diameter of smallest 10% by number of all the particles.
2. The phase-separated glass according to claim 1 ,
wherein dA is more than 0.2 μm.
3. The phase-separated glass according to claim 1 ,
wherein the glass is an alkali silicate glass and comprises a total of 6% by mass or more of Na 2 O and K 7 O, and 0.5% by mass or more of P 2 O 5 .
4. The phase-separated glass according to claim 1 ,
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.
5. The phase-separated glass according to claim 1 , 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%.
6. The phase-separated glass according to claim 1 , 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%.
7. The phase-separated glass according to claim 1 ,
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.
8. The phase-separated glass according to claim 1 ,
wherein a light transmittance at a thickness of 1 mm and at a wavelength of 1,000 nm is 50% or less.
9. The phase-separated glass according to claim 1 ,
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.
10. A chemically-strengthened glass, obtained by a process comprising:
carrying out an ion exchange treatment on the phase-separated glass according to claim 1 .
11. An electronic device chassis, comprising:
the phase-separated glass according to claim 1 .
12. An electronic device chassis, comprising:
the chemically-strengthened glass according to claim 10 .