摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von mit Fluor dotiertem Quarzglas. Weiterhin betrifft die vorliegende Erfindung nach dem vorgestellten Verfahren erhältliches mit Fluor dotiertes Quarzglas sowie dessen Verwendung im Bereich der Optik, beispielsweise als optisches Bauteil.
摘要:
The method for producing a piece made of sintered silica comprises the following steps: a) casting a slurry, which is based on an amorphous silica powder and on a liquid, between the inner (14) and outer (12) parts of a mold (10) in such a manner as to delimit a wall (38) of said piece (40); b) evacuating, at least in part, the liquid; c) removing the piece from the mold whereby obtaining a green piece; d) additionally drying the green piece, and; e) sintering the green piece. This method is characterized in that in step b), the solvent is evacuated through a single inner (14) and outer (12) part of the mold (10) in at least one are delimiting a useful portion of the wall (38), the impermeable part having a deformable lining (30).
摘要:
What is disclosed includes OD-doped synthetic silica glass capable of being used in optical elements for use in lithography below about 300 nm. OD-doped synthetic silica glass was found to have significantly lower polarization-induced birefringence value than non-OD-doped silica glass with comparable concentration of OH. Also disclosed are processes for making OD-dopes synthetic silica glasses, optical member comprising such glasses, and lithographic systems comprising such optical member. The glass is particularly suitable for immersion lithographic systems due to the exceptionally low polarization-induced birefringence values at about 193 nm.
摘要:
The invention concerns silica microspheres (M) having an outer diameter between 50 and 125 νm, preferably between 60 and 90 νm, a wall thickness not less than 1 νm, preferably between 1 and 3 νm and a density between 0.3 and 0.7/cm3, a manufacturing method by injecting silica microsphere precursors (MS, PR1, PR1', PR2') into an inductive plasma (P), assembly methods and possible uses of silica microspheres.
摘要:
A method for producing ultra-high purity, optical quality, glass articles is disclosed which involves:
1. compacting metaloxide or metalloidoxide to granules having a mean particle size of less than about 1 millimeter; 2. optionally fully sintering the granules to produce high purity, artificial sand; 3. casting the granules or artificial sand by conventional techniques, such as, slip casting, to form a high density, porous, green body; 4. optionally drying and partially sintering the green body; 5. optionally fully sintering the green body under vacuum; and 6. optionally hot isostatic pressing the fully sintered green body
whereby the metal oxide or metalloid oxides is a pyrogenic silicon dioxide powder with a BET surface area of 30 to 90 m 2 /g, a DBP index of 80 or less, a mean aggregate area of less than 25000 nm 2 and a mean aggregate circumference of less than 1000 nm, wherein at least 70% of the aggregates have a circumference of less than 1300 nm or a high-purity pyrogenically prepared silicon dioxide having metal contents of less than 0.2 µg/g.
摘要:
As a jig material to use under plasma reaction for producing semiconductors, the present invention provides a quartz glass having resistance against plasma corrosion, particularly corrosion resistance against fluorine-based plasma gases, and which is usable without causing anomalies to silicon wafers; the present invention furthermore provides a quartz glass jig, and a method for producing the same. A quartz glass containing 0.1 to 20 wt% in total of two or more types of metallic elements, said metallic elements comprising at least one type of metallic element selected from Group 3B of the periodic table as a first metallic element and at least one type of metallic element selected from the group consisting of Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, Hf, lanthanoids, and actinoids as a second metallic element, provided that the maximum concentration of each of the second metallic elements is 1.0 wt% or less.