GB580137A - Improvements in the production of light reflecting layers - Google Patents

Improvements in the production of light reflecting layers

Info

Publication number
GB580137A
GB580137A GB9878/44A GB987844A GB580137A GB 580137 A GB580137 A GB 580137A GB 9878/44 A GB9878/44 A GB 9878/44A GB 987844 A GB987844 A GB 987844A GB 580137 A GB580137 A GB 580137A
Authority
GB
United Kingdom
Prior art keywords
layer
glass
aluminium
coating
oxidise
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
GB9878/44A
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB580137A publication Critical patent/GB580137A/en
Expired legal-status Critical Current

Links

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
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/361—Coatings of the type glass/metal/inorganic compound/metal/inorganic compound/other
    • 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
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • 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
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3649—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer made of metals other than silver
    • 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
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3657—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having optical properties
    • C03C17/3663—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having optical properties specially adapted for use as mirrors
    • 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
    • C03C2217/70—Properties of coatings
    • C03C2217/78—Coatings specially designed to be durable, e.g. scratch-resistant

Landscapes

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

Abstract

580,137. Coating non-metals with metals. KODAK, Ltd. May 22, 1944, No. 9878. Convention date, July 3, 1943. [Class 82 (ii)] [Also in Group XX] In a method of forming a reflective coating on a surface, successive layers of a reflective material are deposited thereon by thermal evaporation in a partial vacuum, the vacuum being broken after the application of each layer to allow air to oxidise it and then reformed after the oxidation before forming the next layer. As shown applied to the formation of an aluminium mirror on glass supports each glass 11 is cleaned and placed on an apertured support 12 under a bell 15 and the pressure reduced to .1 mm. of mercury. A glow discharge is passed between the electrodes 17 and 18 to prepare the surface for the coating. The pressure is then further reduced to .0005 mm. of mercury and current supplied to a filament 14 the heat of which evaporates pieces of aluminium 25 which condense on the prepared glass surfaces. When sufficient aluminium has been deposited air is admitted through the cock 23 to oxidise the aluminium layer. Each glass support is then removed from the bell jar, held under a stream of cold water to harden the layer and rubbed with a soft cloth to smooth the surface and remove any particles of dust which would cause pin holes in the layer. The process is then repeated to give one or more further hardened oxidised layers, the completed reflective surface being entirely free from pin holes. A clean pilot glass is observed during each application so that each layer may be of approximately the same thickness.
GB9878/44A 1943-07-03 1944-05-22 Improvements in the production of light reflecting layers Expired GB580137A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US580137XA 1943-07-03 1943-07-03

Publications (1)

Publication Number Publication Date
GB580137A true GB580137A (en) 1946-08-28

Family

ID=22014123

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9878/44A Expired GB580137A (en) 1943-07-03 1944-05-22 Improvements in the production of light reflecting layers

Country Status (1)

Country Link
GB (1) GB580137A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184329A (en) * 1960-12-16 1965-05-18 Rca Corp Insulation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184329A (en) * 1960-12-16 1965-05-18 Rca Corp Insulation

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