GB1253514A - Protective coating of refractory metals - Google Patents

Protective coating of refractory metals

Info

Publication number
GB1253514A
GB1253514A GB212668A GB212668A GB1253514A GB 1253514 A GB1253514 A GB 1253514A GB 212668 A GB212668 A GB 212668A GB 212668 A GB212668 A GB 212668A GB 1253514 A GB1253514 A GB 1253514A
Authority
GB
United Kingdom
Prior art keywords
heating
coating
atmosphere
silicon
silica
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
GB212668A
Inventor
John Alexander Winterburn
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.)
Thermal Syndicate Ltd
Original Assignee
Thermal Syndicate 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 Thermal Syndicate Ltd filed Critical Thermal Syndicate Ltd
Priority to GB212668A priority Critical patent/GB1253514A/en
Publication of GB1253514A publication Critical patent/GB1253514A/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
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
    • C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
    • C23C16/40—Oxides
    • C23C16/401—Oxides containing silicon
    • C23C16/402—Silicon dioxide
    • 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
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/56—After-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Resistance Heating (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

1,253,514. Coated member for an electric incandescent lamp. THERMAL SYNDICATE Ltd. 1 April, 1969 [15 Jan., 1968], No. 2126/68. Heading H1F. [Also in Division C1] A metallic member in the gas-filled envelope of an incandescent lamp is protected from deterioration by heating to a temperature in excess of 1200‹ C., but at least 300‹ C. below the melting point of the metal, in an atmosphere containing silicon tetrachloride, tetrabromide or tetraiodide to form, directly or indirectly, a coating of silica at least 20 microns thick on the member. The coating may be formed directly by heating the member in an atmosphere containing oxygen and the silicon tetrahalide or in two stages by first heating the member in an atmosphere of hydrogen and the silicon tetrahalide and then oxidizing the silicon coating formed to silica by heating in an oxygencontaining atmosphere. A coating which is a mixture of silica and silicon nitride may be formed if nitrogen is present in the atmosphere during heating.
GB212668A 1968-01-15 1968-01-15 Protective coating of refractory metals Expired GB1253514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB212668A GB1253514A (en) 1968-01-15 1968-01-15 Protective coating of refractory metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB212668A GB1253514A (en) 1968-01-15 1968-01-15 Protective coating of refractory metals

Publications (1)

Publication Number Publication Date
GB1253514A true GB1253514A (en) 1971-11-17

Family

ID=9734063

Family Applications (1)

Application Number Title Priority Date Filing Date
GB212668A Expired GB1253514A (en) 1968-01-15 1968-01-15 Protective coating of refractory metals

Country Status (1)

Country Link
GB (1) GB1253514A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989012887A1 (en) * 1988-06-24 1989-12-28 Eastman Kodak Company Process for treating metal particles against corrosion and the particles thereby obtained

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989012887A1 (en) * 1988-06-24 1989-12-28 Eastman Kodak Company Process for treating metal particles against corrosion and the particles thereby obtained
FR2633311A1 (en) * 1988-06-24 1989-12-29 Kodak Pathe PROCESS FOR THE TREATMENT OF METAL PARTICLES AGAINST CORROSION AND PARTICLES OBTAINED

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