FR2304169A1 - Diffusion coating for interior of electric light bulbs - obtd by burning silicon or titanium tetrachlorides in electrostatic field - Google Patents

Diffusion coating for interior of electric light bulbs - obtd by burning silicon or titanium tetrachlorides in electrostatic field

Info

Publication number
FR2304169A1
FR2304169A1 FR7507992A FR7507992A FR2304169A1 FR 2304169 A1 FR2304169 A1 FR 2304169A1 FR 7507992 A FR7507992 A FR 7507992A FR 7507992 A FR7507992 A FR 7507992A FR 2304169 A1 FR2304169 A1 FR 2304169A1
Authority
FR
France
Prior art keywords
coating
bulb
obtd
interior
diffusion coating
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.)
Granted
Application number
FR7507992A
Other languages
French (fr)
Other versions
FR2304169B3 (en
Inventor
Nhiep Nguyen Dat
Georges Kerneur
Alain Andre Albert Thibault
Raymond Claude Emile Boucher
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.)
CENTRAL ECLAIRAGE LAB
Original Assignee
CENTRAL ECLAIRAGE LAB
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 CENTRAL ECLAIRAGE LAB filed Critical CENTRAL ECLAIRAGE LAB
Priority to FR7507992A priority Critical patent/FR2304169A1/en
Publication of FR2304169A1 publication Critical patent/FR2304169A1/en
Application granted granted Critical
Publication of FR2304169B3 publication Critical patent/FR2304169B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/005—Methods for coating the surface of the envelope
    • 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
    • C03C17/23—Oxides
    • 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
    • C03C17/3411—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials
    • C03C17/3417—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials all coatings being oxide coatings
    • 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
    • C03C2217/21—Oxides
    • C03C2217/212—TiO2
    • 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
    • C03C2217/21—Oxides
    • C03C2217/213—SiO2
    • 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
    • C03C2218/17—Deposition methods from a solid phase

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

A white diffusion coating is applied on the internal surface of a transparent glass bulb used for an incandescent lamp, where a mixt. of H2, air, and the vapour of at least one organic cpd. of Si or Ti is burnt in the bulb while the bulb is rotated at constant speed on its longitudinal axis, and heated externally. The particles of the coating are directed with a controlled distribution and thickness onto surface (1) by means of an electric field existing in and around the bulb, the orientation and strength of the field being adjusted to suit the bulb size and shape. The pref. cpds. are SiCl4 and/or TiCl4, forming SiO2 and/or TiO2, and the pref. coating appts. is included in the claims. Electrostatic- and chemical vapour-deposition are combined to provide coating particles below 1 um in size, diffusing the light so the filament cannot be seen, but the coating only absorbs 5-7% of the transmitted light.
FR7507992A 1975-03-14 1975-03-14 Diffusion coating for interior of electric light bulbs - obtd by burning silicon or titanium tetrachlorides in electrostatic field Granted FR2304169A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7507992A FR2304169A1 (en) 1975-03-14 1975-03-14 Diffusion coating for interior of electric light bulbs - obtd by burning silicon or titanium tetrachlorides in electrostatic field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7507992A FR2304169A1 (en) 1975-03-14 1975-03-14 Diffusion coating for interior of electric light bulbs - obtd by burning silicon or titanium tetrachlorides in electrostatic field

Publications (2)

Publication Number Publication Date
FR2304169A1 true FR2304169A1 (en) 1976-10-08
FR2304169B3 FR2304169B3 (en) 1977-11-18

Family

ID=9152576

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7507992A Granted FR2304169A1 (en) 1975-03-14 1975-03-14 Diffusion coating for interior of electric light bulbs - obtd by burning silicon or titanium tetrachlorides in electrostatic field

Country Status (1)

Country Link
FR (1) FR2304169A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3132110A1 (en) * 1980-12-17 1982-09-09 Egyesült Izzólámpa és Villamossági Részvénytársaság, 1340 Budapest Electrical light source having an internally painted (coated) bulb
FR2506290A1 (en) * 1981-05-20 1982-11-26 Air Liquide PROCESS FOR OPALIZING LAMPS BY GASEOUS WAY
FR2689118A1 (en) * 1992-03-26 1993-10-01 Air Liquide Coating glass surface with silica to improve ion migration resistance - by projecting gas mixt. contg. neutral gas, silicon precursor, oxygen@ and hydrogen@, onto surface
EP0614211A1 (en) * 1993-03-01 1994-09-07 General Electric Company Pearlescent lamp

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3132110A1 (en) * 1980-12-17 1982-09-09 Egyesült Izzólámpa és Villamossági Részvénytársaság, 1340 Budapest Electrical light source having an internally painted (coated) bulb
FR2506290A1 (en) * 1981-05-20 1982-11-26 Air Liquide PROCESS FOR OPALIZING LAMPS BY GASEOUS WAY
EP0066479A1 (en) * 1981-05-20 1982-12-08 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for the opalisation of lamps by the vapour phase
FR2689118A1 (en) * 1992-03-26 1993-10-01 Air Liquide Coating glass surface with silica to improve ion migration resistance - by projecting gas mixt. contg. neutral gas, silicon precursor, oxygen@ and hydrogen@, onto surface
EP0614211A1 (en) * 1993-03-01 1994-09-07 General Electric Company Pearlescent lamp

Also Published As

Publication number Publication date
FR2304169B3 (en) 1977-11-18

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Legal Events

Date Code Title Description
ST Notification of lapse