BE452879A - - Google Patents
Info
- Publication number
- BE452879A BE452879A BE452879DA BE452879A BE 452879 A BE452879 A BE 452879A BE 452879D A BE452879D A BE 452879DA BE 452879 A BE452879 A BE 452879A
- Authority
- BE
- Belgium
- Prior art keywords
- molded parts
- pulverized material
- vaporized
- water
- vaporization
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 2
- 238000009834 vaporization Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L Calcium fluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- 229910001634 calcium fluoride Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/20—Materials for coating a single layer on glass
- C03C2217/28—Other inorganic materials
- C03C2217/284—Halides
- C03C2217/285—Fluorides
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
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" Procède pour l'amélioration de surfaces par application à l'état vaporisé de matiè- res solides
Lorsque des quantités exactement uniformes d'une matière solide déterminée, par exemple d'un sel insoluble dans l'eau, doivent être vaporisées en répétition constante, par exemple pour être appliquées à-l'état vaporisé, dans le vide, en une épaisseur de couche égale, sur'des surfaces de'même grandeur de corps à améliorer superficiellement, on rencontre une grande difficulté pour la'détermination des quantités de la matière à employer pour les différentes vaporisations.
Ce problème ne peut pas être résolu par le simple soupèsement dé quantités é- gales de la matière pulvérisée, car la poudrer libre pétille pendant la vaporisation et échappe ainsi en majeure partie à la vaporisation. La compression de la matière pulvérisée, avec ou sans liants, en corps de grandeur et de teneur'déterminées, né peut pas être employée non plus dans le cas présent; car le liant participant à la vaporisation nuirait à la pureté et à l'uniformité de la couche soumise à la vaporisation ou bien'les .pièces moulées sans liant n'auraient pas une stabilité de forme suffisante pour garantir une mesure exacte des quantités à ap- pliquer à l'état vaporisé sur l'unité de surface.
Conformément à la présente invention, ces difficultés sont évitées par le fait que l'on produit d'abord, au moyen de la matière pulvérisée à vaporiser, une pièce moulée solidifiée par concrétionnement, que l'on vaporise ensuite d'après un pro- cédé connu en soi. pour la production de la pièce moulée, la poudre est empâtée, par exemple avec de lteau, en une pâte vis- queuse, la pâte est coulée dans des moules de grandeur déter- minée et les pièces moulées sont séchées et concrétionnées.
Dans ce but, on utilise de préférence une jauge qui, en raison ' de la facilité de traitement, se compose avantageusement d'une plaque en matière synthétique, d'épaisseur déterminée, pourvue de nombreuses perforations cylindriques.
Pour la production de pièces moulées de fluorure de cal- cium du poids d'environ 0,5 a 1 mgr. on emploie,, par exemple,- une plaque en matière synthétique de 1 mm. d'épaisseur, pourvue de nombreuses perforations de 1 mm. de diamètre. Dans ces trous, on comité une pâte visqueuse en fluorure de. calcium et eau; et on la sèche à l'air, Après quelque temps, on expulse le contenu des différents trous à l'aide d'une chevillette, et on obtient des pièces moulées aqueuses du sel destiné à l'amélioration.
On chauffe ces pièces dans un creuset jusqu'à ce qu'elles aient cédé toute l'eau sous conorétionnement. Les pièces moulées, dont les dimensions sont alors notablement plus réduites, et
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qui sont très solides, pèsent entre 0,5 - 1 mgr., suivant la finesse de la'poudre de fluorure de calcium employée.
La production de couches atténuant la réflexion sur du verre est effectues simplement par vaporisation dans le vide de ces-pièces moulées, en les chauffant jusqu'à vaporisation totale par ohauffage à résistance d'une spirale de fil métallique ou d'un radiateur électrique en forme de bande. Par le réglage de l'intervalle entre le radiateur électrique et la plaque de verre ou la lentille à améliorer, et par le choix de la pression dans le récipient de vaporisation, on trouve pour chaque verre un réglage parfait.
Au moyen des pièces moulées ainsi produites, on peut obtenir en série une amélioration du verre par une perméabilité accrue restant constamment égale.
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"Procedure for improving surfaces by applying solid materials in the vaporized state
When exactly uniform amounts of a given solid material, for example a water insoluble salt, are to be vaporized in constant repetition, for example to be applied in a vaporized state, in vacuum, in a thickness of equal layer, over surfaces of the same body size to be improved superficially, one encounters great difficulty in determining the quantities of the material to be employed for the various sprays.
This problem cannot be solved by simply weighing equal amounts of the material sprayed, since the loose powder sparkles during spraying and thus largely escapes spraying. The compression of the pulverized material, with or without binders, into bodies of determined size and content, can not be employed in the present case either; because the binder participating in the vaporization would adversely affect the purity and the uniformity of the layer subjected to the vaporization or else the molded parts without binder would not have sufficient stability of form to guarantee an exact measurement of the quantities to be applied. - apply in the sprayed state on the surface unit.
In accordance with the present invention, these difficulties are avoided by first producing, by means of the sprayed material to be sprayed, a solidified molding by concretion, which is then sprayed according to a method. ceded known per se. for the production of the molded part, the powder is pasted, for example with water, into a viscous paste, the paste is poured into molds of certain size and the molded parts are dried and concreted.
For this purpose, a gauge is preferably used which, owing to the ease of processing, advantageously consists of a plate of synthetic material of determined thickness, provided with numerous cylindrical perforations.
For the production of calcium fluoride castings weighing about 0.5 to 1 mg. one uses ,, for example, - a plastic plate of 1 mm. thick, with numerous perforations of 1 mm. of diameter. In these holes, a viscous fluoride paste is made. calcium and water; and air-dried. After some time, the contents of the various holes are expelled with the aid of a dowel, and aqueous castings of the salt for improvement are obtained.
These pieces are heated in a crucible until they have given up all the water under pressure. The molded parts, whose dimensions are then notably smaller, and
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which are very solid, weigh between 0.5 - 1 mg., depending on the fineness of the calcium fluoride powder used.
The production of layers attenuating the reflection on glass is carried out simply by vaporization in the vacuum of these-molded parts, by heating them until complete vaporization by resistance heating of a spiral of metal wire or of an electric heater in band form. By adjusting the interval between the electric heater and the glass plate or the lens to be improved, and by choosing the pressure in the vaporization vessel, a perfect adjustment is found for each glass.
By means of the moldings thus produced, an improvement in glass can be achieved in series by increased permeability remaining constantly equal.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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BE452879A true BE452879A (en) |
Family
ID=107399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE452879D BE452879A (en) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE452879A (en) |
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0
- BE BE452879D patent/BE452879A/fr unknown
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