DE928807C - Process for the vapor deposition of silver mirrors - Google Patents

Process for the vapor deposition of silver mirrors

Info

Publication number
DE928807C
DE928807C DEN8014A DEN0008014A DE928807C DE 928807 C DE928807 C DE 928807C DE N8014 A DEN8014 A DE N8014A DE N0008014 A DEN0008014 A DE N0008014A DE 928807 C DE928807 C DE 928807C
Authority
DE
Germany
Prior art keywords
silver
vapor deposition
filament
silver mirrors
silicon
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEN8014A
Other languages
German (de)
Inventor
Bartholomeus Haes
Willem Westerveld
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of DE928807C publication Critical patent/DE928807C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C23C14/26—Vacuum evaporation by resistance or inductive heating of the source
    • 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
    • C03C17/06—Surface treatment of glass, not in the form of fibres or filaments, by coating with metals
    • C03C17/09—Surface treatment of glass, not in the form of fibres or filaments, by coating with metals by deposition from the vapour phase
    • 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
    • C03C2217/25—Metals
    • C03C2217/251—Al, Cu, Mg or noble metals
    • 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
    • C03C2218/15—Deposition methods from the vapour phase

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Inorganic Fibers (AREA)
  • Physical Vapour Deposition (AREA)

Description

AUSGEGEBEN AM 10. JUNI 1955ISSUED JUNE 10, 1955

N 8014 VlaI'48bN 8014 VlaI'48b

Eindhoven (Niederlande)Eindhoven (Netherlands)

sind als Erfinder genannt wordenhave been named as inventors

Bekannt ist ein Verfahren zur Herstellung von Silberspiegeln., bei dem ein aus. einem Metall mit sehr hohem Schmelzpunkt,, wie Wolfram oder Molybdän, beistehender Draht mit Silber überzogen und zum Glühen gebracht wird, worauf der mit Silber zu überziehende Gegenstand in die Nähe des Glühdrahtes gebracht wird.A method for producing Silver mirrors., With which one off. a metal with very high melting point, such as tungsten or molybdenum, the wire is coated with silver and is made to glow, whereupon the object to be coated with silver is brought into the vicinity of the Glow wire is brought.

Auf diese Weise können, z. B. Glaskörper für elektrische Lampen oder Schalen für Reflektoren mit einer Spiegelfläche versehen werden.In this way, z. B. glass body for electric lamps or shells for reflectors with be provided with a mirror surface.

Ein bekannter Nachteil dieses Verfahrens, ist der, daß das Silber den Glühdraht schlecht benetzt und sich in Tropfen zusammenzieht, wodurch das Silber von dem Draht abfällt. Es wurde schon vorgeschlagen, zu dem Glühdraht oder dem Silber ein drittes Metall zuzusetzen, das eine bessere Haftung des Silbers sowie ein Ausfließen des Silbers über den Glühdrabt bewirkt. Als. Flußmittel· wurden die Metalle aus der achten Gruppe, !insbesondere Platin, Palladium, Iridium, Rhodium, Eisen, Nickel und Kobalt sowie Beryllium, vorgeschlagen.A known disadvantage of this method is that the silver does not wet the filament well and contracts into drops, causing the silver to fall off the wire. It has already been suggested to add a third metal to the filament or silver, which ensures better adhesion of the Causes silver as well as an outflow of the silver over the hot rod. As. Flux · became the Metals from the eighth group,! Especially platinum, Palladium, iridium, rhodium, iron, nickel and cobalt, as well as beryllium, have been suggested.

Auch bei Verwendung dieser Metalle treten, einige Nachteile auf. Die Edelmetalle, wie» Platin, üben zwar die gewünschte Wirkung aus, aber es muß dem Silber ein ziemlich hoher Prozentsatz zugesetzt werden. Die besten Ergebnisse werden mit einer Silberlegierung erzielt, die 5 biis 15% dieser Metalle enthält. Solche Legierungen sind jedoch bedeutend kostspieliger als das Silber selbst. Von den anderen Metallen wird dem Silber eineThere are also some disadvantages when using these metals. The precious metals, such as »platinum, have the desired effect, but a fairly high percentage must be added to the silver will. The best results are achieved with a silver alloy that contains 5 to 15% this contains metals. However, such alloys are significantly more expensive than the silver itself. Of the other metals, silver becomes one

Menge von der Ordnung vom. i°/o zugesetzt. Die Haftung dieser Legierungen ist verhältnismäßig schlecht; es kann erforderlich' sein, den Glühdraht zuvor auf galvanischem Wege ganz mit einer solchen Legierung zu überziehen.Amount of the order from. i ° / o added. the Adhesion of these alloys is relatively poor; it may be necessary to 'replace the filament to be coated completely with such an alloy beforehand by electroplating.

Gemäß der Erfindung wird als· Flußmittel Silicium verwendet, das den Vorteil ergibt, daß sehr kleine Mengen, in der Ordnung von o,i %>, genügen, wobei die Benetzung des Glühdrahites besonders rationell ist. Auch erfüllt Silicium die Anforderung, daß 'eis·, wenn es sich verflüchtigt, keine Verfärbung des Silberspiegels, herbeiführt.According to the invention, silicon is used as the flux, which has the advantage that very small amounts, in the order of o, i%>, suffice, the wetting of the incandescent wire is particularly efficient. Silicon also meets the requirement that 'ice', when it evaporates, does not discolour of the silver mirror.

Zur Durchführung des. Verfahrens nach der Erfindung können in einem Glühidraht aus: Wolfram, Molybdän oder einem ähnlichen Metall mit hohem Schmelzpunkt Stückchen einer etwa o,i % Silicium enthaltenden Silberlegierung angebracht werden.To carry out the. Method according to the invention can in a filament made of: tungsten, molybdenum or a similar metal with high Melting point pieces of a silver alloy containing about o, i% silicon are attached.

Beim Glühen verteilt sich diese Legierung besonders gleichmäßig über die ganze Oberfläche des Glühdrahtes. During annealing, this alloy is distributed particularly evenly over the entire surface of the filament.

Claims (2)

PaTENTANSPKÜCHE:PATENT KITCHEN: 1. Verfahren, zur Herstellung von Silbenspiegeln durch Abdampfen vom Silber von einem Glühdraht, der aus einem Metall mit besonders hohem Schmelzpunkt, wie Wolfram und Molybdän, besteht, unter Anwendung1 eines dritten Metalls als Flußmittel, dadurch gekennzeichnet, daß dieses. Flußmittel aus Silicium besteht.1. A method for the production of syllable levels by evaporation of silver from a filament, which consists of a metal with a particularly high melting point, such as tungsten and molybdenum, using 1 of a third metal as a flux, characterized in that this. Flux consists of silicon. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß eine Silberlegierung verwendet wird, die Silicium in der Größenordnung· von-ο, ι % enthält.2. The method according to claim i, characterized in that that a silver alloy is used, the silicon in the order of contains from-ο, ι%. ι 509513 6.55ι 509513 6.55
DEN8014A 1952-11-15 1953-11-13 Process for the vapor deposition of silver mirrors Expired DE928807C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL78915T 1952-11-15

Publications (1)

Publication Number Publication Date
DE928807C true DE928807C (en) 1955-06-10

Family

ID=32294084

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN8014A Expired DE928807C (en) 1952-11-15 1953-11-13 Process for the vapor deposition of silver mirrors

Country Status (6)

Country Link
US (1) US2819982A (en)
BE (1) BE524251A (en)
DE (1) DE928807C (en)
FR (1) FR1087152A (en)
GB (1) GB735009A (en)
NL (1) NL78915C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975075A (en) * 1956-02-17 1961-03-14 Norman C Beese Method of evaporating metals
US2904451A (en) * 1957-12-05 1959-09-15 Gen Electric Vaporization coating process and alloy therefor
US5789847A (en) * 1994-09-09 1998-08-04 Philips Electronics North America Corporation High efficiency sealed beam reflector lamp with reflective surface of heat treated silver
US5493170A (en) * 1994-09-09 1996-02-20 Philips Electronics North America Corporation High efficiency sealed beam reflector lamp

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2079784A (en) * 1933-01-19 1937-05-11 Robley C Williams Plating by thermal evaporation
US2138637A (en) * 1938-04-23 1938-11-29 Handy & Harman Alloys
US2424085A (en) * 1943-08-11 1947-07-15 Shell Dev Supported silver catalyst and its preparation
US2386876A (en) * 1943-11-23 1945-10-16 Libbey Owens Ford Glass Co Method of coating surfaces with quartz
US2450340A (en) * 1944-02-03 1948-09-28 Mallory & Co Inc P R Silver base alloy for metal evaporation
US2450850A (en) * 1946-12-03 1948-10-05 Libbey Owens Ford Glass Co Method of coating by evaporating metals
US2450856A (en) * 1946-12-03 1948-10-05 Libbey Owens Ford Glass Co Method of coating by evaporating metals

Also Published As

Publication number Publication date
FR1087152A (en) 1955-02-22
GB735009A (en) 1955-08-10
NL78915C (en)
BE524251A (en)
US2819982A (en) 1958-01-14

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