GB620165A - Improvements in or relating to the treatment of internal combustion engine valves - Google Patents

Improvements in or relating to the treatment of internal combustion engine valves

Info

Publication number
GB620165A
GB620165A GB2365446A GB2365446A GB620165A GB 620165 A GB620165 A GB 620165A GB 2365446 A GB2365446 A GB 2365446A GB 2365446 A GB2365446 A GB 2365446A GB 620165 A GB620165 A GB 620165A
Authority
GB
United Kingdom
Prior art keywords
nickel
aluminium
cobalt
melt
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.)
Expired
Application number
GB2365446A
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.)
Shell Refining and Marketing Co Ltd
Original Assignee
Shell Refining and Marketing Co 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 Shell Refining and Marketing Co Ltd filed Critical Shell Refining and Marketing Co Ltd
Priority to GB2365446A priority Critical patent/GB620165A/en
Publication of GB620165A publication Critical patent/GB620165A/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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/12—Aluminium or alloys based thereon
    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material

Landscapes

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

Abstract

To avoid corrosion a valve for an internal-combustion engine, made of a ferrous or non-ferrous metal, is provided, at least on that part exposed to attack by the combustion products, with a coating of a nickel-cobalt-aluminium or a nickel-iron-aluminium alloy. The coating may consist of an alloy produced by applying a melt of nickel, cobalt and chromium containing 33 to 75 per cent aluminium, 2 to 65 per cent nickel, and 2 to 65 per cent cobalt, a preferred ratio of nickel : cobalt : aluminium being approximately 26 : 13 : 61. The valve or part thereof may be coated by immersion in a melt of nickel, cobalt and aluminium and then subjected to a heat diffusion treatment and may, previous to immersion, be initially provided with a thin skin of cadmium or other low melting-point metal. A steel valve may be coated with cadmium or other low melting-point metal, immersed in a melt of nickel-aluminium alloy and heat-treated to diffuse the alloy to form a coating of nickel-iron-aluminium. The surface to be coated may be immersed in a melt of aluminium prior to immersion in the ternary or binary melt, and the valve may be rotated at uniform speed while immersed, a small electric current being passed through the valve, which may be initially degreased and etched prior to any coating action. The ternary alloy coating may contain up to 10 per cent of one or more of the group-iron, cobalt, chromium, titanium and manganese. Specification 594,418 is referred to.
GB2365446A 1946-08-09 1946-08-09 Improvements in or relating to the treatment of internal combustion engine valves Expired GB620165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2365446A GB620165A (en) 1946-08-09 1946-08-09 Improvements in or relating to the treatment of internal combustion engine valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2365446A GB620165A (en) 1946-08-09 1946-08-09 Improvements in or relating to the treatment of internal combustion engine valves

Publications (1)

Publication Number Publication Date
GB620165A true GB620165A (en) 1949-03-21

Family

ID=10199143

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2365446A Expired GB620165A (en) 1946-08-09 1946-08-09 Improvements in or relating to the treatment of internal combustion engine valves

Country Status (1)

Country Link
GB (1) GB620165A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881750A (en) * 1956-03-29 1959-04-14 Gen Motors Corp Valve
US2885304A (en) * 1954-09-29 1959-05-05 Gen Motors Corp Method of aluminum coating
US3033705A (en) * 1956-08-13 1962-05-08 Gen Motors Corp Method of applying an aluminum coating on ferrous metal article
GB2219043A (en) * 1988-05-23 1989-11-29 Inco Alloys Int I.c. engine exhaust poppet valves
GB2226047A (en) * 1988-12-13 1990-06-20 United Technologies Corp Nickel aluminide materials having toughness and ductility at low temperatures
US5934238A (en) * 1998-02-20 1999-08-10 Eaton Corporation Engine valve assembly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885304A (en) * 1954-09-29 1959-05-05 Gen Motors Corp Method of aluminum coating
US2881750A (en) * 1956-03-29 1959-04-14 Gen Motors Corp Valve
US3033705A (en) * 1956-08-13 1962-05-08 Gen Motors Corp Method of applying an aluminum coating on ferrous metal article
GB2219043A (en) * 1988-05-23 1989-11-29 Inco Alloys Int I.c. engine exhaust poppet valves
GB2219043B (en) * 1988-05-23 1992-06-24 Inco Alloys Int Aircraft exhaust valves
GB2226047A (en) * 1988-12-13 1990-06-20 United Technologies Corp Nickel aluminide materials having toughness and ductility at low temperatures
US5934238A (en) * 1998-02-20 1999-08-10 Eaton Corporation Engine valve assembly

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