Method of producing glass
AssigneeCanon Kabushiki Kaisha
InventorsKenji Takashima, Zuyi Zhang, Yoshinori Kotani
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Abstract
Provided is a method of producing porous glass having pores with a uniform pore diameter entirely, particularly in the case of phase-separated glass, including selectively removing a denatured layer formed on the surface of glass easily. The method of producing glass includes: forming phase-separated glass containing silicon oxide, boron oxide, and an alkali metal oxide; bringing an alkaline solution held by a porous supporting member into contact with the denatured layer formed on the surface of the phase-separated glass to remove the denatured layer; and immersing the phase-separated glass with the denatured layer removed therefrom in an acid solution to form pores in the phase-separated glass.
Claims9
A method of producing glass, comprising:
- forming a vitreous body containing silicon oxide, boron oxide, and an alkali metal oxide;
- and
- bringing an alkaline solution held by a porous supporting member into contact with a surface of the vitreous body to remove a denatured layer which is compositionally deviated from a vitreous body.
A method of producing glass comprising:
- forming phase-separated glass containing silicon oxide, bringing an alkaline solution held by a porous supporting member into contact with a denatured layer formed on a surface of the phase-separated glass to remove the denatured layer which is compositionally deviated from a vitreous body;
- and
- immersing the phase-separated glass with the denatured layer removed therefrom in an acid solution and/or water to form pores in the phase-separated glass.
Dependencies are inferred from the claim text.