摘要:
The present invention is to provide a synthetic quartz glass body having a high light transmittance. The present invention provides a synthetic quartz glass body having pores in a surface part thereof.
摘要:
The present invention is to provide a synthetic quartz glass body having a high light transmittance. The present invention provides a synthetic quartz glass body having pores in a surface part thereof.
摘要:
The present invention is to provide a synthetic quartz glass body having a high light transmittance. The present invention provides a synthetic quartz glass body having pores in a surface part thereof.
摘要:
To provide a method for producing a fluoropolymer excellent in adhesion to a substrate and film strength.A method for producing a fluoropolymer thin film, which comprises forming a fluoropolymer thin film on a substrate by a physical vapor deposition method using, as an evaporation source, a fluoropolymer having a fluorinated aliphatic ring structure in its main chain and having a weight average molecular weight of from 3,000 to 80,000.
摘要:
The present invention relates to a process for production of a synthetic quartz glass having a fluorine concentration of 1,000 mass ppm or more, the process comprising: (a) a step of depositing and growing quartz glass fine particles obtained by flame hydrolysis of a glass forming raw material onto a substrate, to thereby form a porous glass body; (b) a step of keeping the porous glass body in a reaction vessel that is filled with elemental fluorine (F2) or a mixed gas comprising elemental fluorine (F2) diluted with an inert gas and contains a solid metal fluoride, to thereby obtain a fluorine-containing porous glass body; and (c) a step of heating the fluorine-containing porous glass body to a transparent vitrification temperature, to thereby obtain a fluorine-containing transparent glass body.
摘要:
The present invention relates to a method for production of a synthetic quartz glass having a fluorine concentration of 1,000 ppm by mass or higher, comprising the following steps (a) to (c): (a) depositing and growing quartz glass fine particles obtained by flame hydrolysis of a glass-forming material onto a substrate, to thereby form a porous glass body; (b) maintaining the porous glass body in a reaction vessel under an elemental fluorine (F2)-containing atmosphere of a pressure of Pb1 and a temperature of 400° C. or lower, and followed by maintaining in the reaction vessel under condition of a pressure Pb2 lower than the pressure Pb1 and a temperature of 400° C. or lower, to thereby obtain a fluorine-containing porous glass body; and (c) heating the fluorine-containing porous glass body in a vitrification furnace to a transparent vitrification temperature, to thereby obtain a fluorine-containing transparent glass body.
摘要:
The present invention relates to an optical member including a TiO2-containing silica glass having: a TiO2 concentration of from 3 to 10% by mass; a Ti3+ concentration of 100 wt ppm or less; a thermal expansion coefficient at from 0 to 100° C., CTE0-100, of 0±150 ppb/° C.; and an internal transmittance in the wavelength range of 400 to 700 nm per a thickness of 1 mm, T400-700, of 80% or more, in which the optical member has a ratio of variation of Ti3+ concentration to an average value of the Ti3+ concentration, ΔTi3+/Ti3+, on an optical use surface, is 0.2 or less.
摘要翻译:本发明涉及一种含有TiO2含量为3〜10质量%的含TiO 2的二氧化硅玻璃的光学构件, Ti3 +浓度为100重量ppm以下; 0-100℃的热膨胀系数,CTE0-100,为0±150ppb /℃。 并且在400〜700nm的波长范围内的内部透射率,每1mm厚度,T400〜700,为80%以上,其中光学部件具有Ti 3+浓度的变化比与Ti 3+的平均值的比值, 在光学用表面上的浓度&Dgr; Ti 3+ / Ti 3+为0.2以下。
摘要:
To provide a novel fluorination treatment method whereby the surface of oxide glass can be treated for fluorination at low cost and with excellent adhesiveness.A method for treating the surface of oxide glass, which comprises contacting the surface of oxide glass with a gas of a fluorinating agent or a mixed gas having a fluorinating agent diluted with an inert gas, wherein the fluorinating agent is an elemental fluorine, or a fluorine compound capable of cleaving a bond between an oxygen atom and a metal atom in the framework of the oxide glass and forming a bond between a fluorine atom and the metal atom; and the concentration of hydrogen fluoride at the surface of oxide glass with which the fluorinating agent is in contact, is controlled to be at most 1 mol %.
摘要:
The present invention relates to a method for production of a synthetic quartz glass having a fluorine concentration of 1,000 ppm by mass or higher, comprising the following processes steps (a) to (c): (a) depositing and growing quartz glass fine particles obtained by flame hydrolysis of a glass-forming material onto a substrate, to thereby form a porous glass body; (b) maintaining the porous glass body in a reaction vessel under an elemental fluorine (F2)-containing atmosphere of 400° C. or lower, to thereby obtain a fluorine-containing porous glass body; and (c) heating the fluorine-containing porous glass body in a vitrification furnace to a transparent vitrification temperature, to thereby obtain a fluorine-containing transparent glass body, wherein, in step (b), elemental fluorine (F2) is continuously or intermittently supplied to the reaction vessel and the gas in the reaction vessel is continuously or intermittently discharged from the reaction vessel.
摘要:
The present invention relates to a process for production of a synthetic quartz glass having a fluorine concentration of 1,000 mass ppm or more, the process comprising: (a) a step of depositing and growing quartz glass fine particles obtained by flame hydrolysis of a glass forming raw material onto a substrate, to thereby form a porous glass body; (b) a step of keeping the porous glass body in a reaction vessel that is filled with elemental fluorine (F2) or a mixed gas comprising elemental fluorine (F2) diluted with an inert gas and contains a solid metal fluoride, to thereby obtain a fluorine-containing porous glass body; and (c) a step of heating the fluorine-containing porous glass body to a transparent vitrification temperature, to thereby obtain a fluorine-containing transparent glass body.