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GB660076A - Improvements in or relating to metallic structures - Google Patents

Improvements in or relating to metallic structures

Info

Publication number
GB660076A
GB660076A GB31018/49A GB3101849A GB660076A GB 660076 A GB660076 A GB 660076A GB 31018/49 A GB31018/49 A GB 31018/49A GB 3101849 A GB3101849 A GB 3101849A GB 660076 A GB660076 A GB 660076A
Authority
GB
United Kingdom
Prior art keywords
coating
carbon
platinum
carbide
dipping
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
GB31018/49A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB660076A publication Critical patent/GB660076A/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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • 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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

A metallic structure, particularly for an electronic discharge device electrode or a jet engine part, comprises a refractory metal base of tantalum, columbium, molybdenum or tungsten, a hard barrier layer of mixed or alloyed carbides of the base metal and of silicon, titanium or zirconium, and a refractory outer coating of carbon or of one of the metals of the platinum group. A method of manufacture of a metallic structure as described above comprises the steps of applying a coating of finely divided silica, titania or zirconia to the metal base, sintering the coating, applying a coating of carbon in excess of the stoichiometric amount for reducing the oxide to carbide, firing the structure to at least 1700 DEG C in vacuo or an inert or reducing atmosphere until the carbides are formed, and coating the carbide surface with carbon or one of the metals of the platinum group. The oxide layer and the carbon layers may be applied by dipping, electrophoresis or spraying, using an organic or inorganic binder. The platinum layer is applied by dipping the carbide-coated article into a solution of an organic platinum compound or chloroplatinic acid, withdrawing from the solution and heating for about five minutes at 375 DEG C. This is repeated at least ten times and a final coating given in a conventional platinum electroplating bath. The structure is finally fired to about 1500 DEG C in an atmosphere at a pressure of 10-5 m.m. of mercury.
GB31018/49A 1949-01-24 1949-12-02 Improvements in or relating to metallic structures Expired GB660076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US660076XA 1949-01-24 1949-01-24

Publications (1)

Publication Number Publication Date
GB660076A true GB660076A (en) 1951-10-31

Family

ID=22066652

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31018/49A Expired GB660076A (en) 1949-01-24 1949-12-02 Improvements in or relating to metallic structures

Country Status (1)

Country Link
GB (1) GB660076A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2579997A1 (en) * 1985-04-03 1986-10-10 Preci Coat Sa Process for treating the surface of an object and object obtained by this process
EP0376061A2 (en) * 1988-12-24 1990-07-04 Asea Brown Boveri Aktiengesellschaft High-temperature protected coating
GB2269392A (en) * 1992-08-06 1994-02-09 Monitor Coatings & Eng Coating of components with final impregnation with chromia or phosphate forming compound

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2579997A1 (en) * 1985-04-03 1986-10-10 Preci Coat Sa Process for treating the surface of an object and object obtained by this process
EP0376061A2 (en) * 1988-12-24 1990-07-04 Asea Brown Boveri Aktiengesellschaft High-temperature protected coating
EP0376061A3 (en) * 1988-12-24 1990-09-26 Asea Brown Boveri Aktiengesellschaft High-temperature protected coating
GB2269392A (en) * 1992-08-06 1994-02-09 Monitor Coatings & Eng Coating of components with final impregnation with chromia or phosphate forming compound

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