GB1328458A - Method for coating heat resistant alloys - Google Patents

Method for coating heat resistant alloys

Info

Publication number
GB1328458A
GB1328458A GB1471771*[A GB1471771A GB1328458A GB 1328458 A GB1328458 A GB 1328458A GB 1471771 A GB1471771 A GB 1471771A GB 1328458 A GB1328458 A GB 1328458A
Authority
GB
United Kingdom
Prior art keywords
pack
base alloy
coated
heat resistant
resistant alloys
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
GB1471771*[A
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.)
Chromalloy American Corp
Original Assignee
Chromalloy American Corp
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 Chromalloy American Corp filed Critical Chromalloy American Corp
Publication of GB1328458A publication Critical patent/GB1328458A/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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/34—Embedding in a powder mixture, i.e. pack cementation
    • C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
    • C23C10/38—Chromising
    • C23C10/40—Chromising of ferrous surfaces
    • C23C10/42—Chromising of ferrous surfaces in the presence of volatile transport additives, e.g. halogenated substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Heat Treatment Of Steel (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

1328458 Pack-diffusion coating of Nickelbase alloys CHROMALLOY AMERICAN CORP 13 May 1971 [3 June 1970] 14717/71 Heading C7F A Ni-base alloy is coated with Cr by embedding in a pack containing Cr, an inert diluent, a halide energizer, and a getter, eg Al whose negative free energy of formation of the oxide 25‹C is at least 115, 000 calories per gram atom of oxygen. The Ni-base alloy may contain up to 30% of Cr, Mo and W, up to 10% of Nb and Ta, up to 1% C, up to 10% of Ti or Al, up to 2% Si, up to 0À1% B, up to 2% Mn, and up to 1% Zr. The pack may also include 3 to 5% Ni. The coated Ni-base alloy may be given a second pack diffusion coating using Al and a buffering metal eg Cr. The halide energizer may be ammonium iodide, bromide or bifluoride. The pack may be first heated to eg 1850‹ F before the alloy is embedded.
GB1471771*[A 1970-06-03 1971-05-13 Method for coating heat resistant alloys Expired GB1328458A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4308270A 1970-06-03 1970-06-03

Publications (1)

Publication Number Publication Date
GB1328458A true GB1328458A (en) 1973-08-30

Family

ID=21925406

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1471771*[A Expired GB1328458A (en) 1970-06-03 1971-05-13 Method for coating heat resistant alloys

Country Status (9)

Country Link
US (1) US3694255A (en)
JP (1) JPS5248096B1 (en)
CA (1) CA923769A (en)
CH (1) CH542288A (en)
DE (1) DE2126479C3 (en)
FR (1) FR2093999B1 (en)
GB (1) GB1328458A (en)
IL (1) IL36817A (en)
SE (2) SE375117B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167773A (en) * 1984-11-29 1986-06-04 Secr Defence Improvements in or relating to coating processes

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758233A (en) * 1972-01-17 1973-09-11 Gen Motors Corp Vibration damping coatings
US4122673A (en) * 1973-09-28 1978-10-31 J. Eberspacher Internal combustion engine with afterburning and catalytic reaction in a supercharger turbine casing
US4148936A (en) * 1976-12-23 1979-04-10 General Electric Company Method for diffusion coating an Fe-Ni base alloy with chromium
US4352840A (en) * 1980-11-17 1982-10-05 Turbine Metal Technology, Inc. Interdispersed phase coatings method
US4467016A (en) * 1981-02-26 1984-08-21 Alloy Surfaces Company, Inc. Aluminized chromized steel
FR2502186A1 (en) * 1981-03-17 1982-09-24 Onera (Off Nat Aerospatiale) Protecting superalloy against hot corrosion - by coating with iron and then chromising
GB2125111B (en) * 1982-03-23 1985-06-05 Rolls Royce Shroud assembly for a gas turbine engine
US5928725A (en) * 1997-07-18 1999-07-27 Chromalloy Gas Turbine Corporation Method and apparatus for gas phase coating complex internal surfaces of hollow articles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167773A (en) * 1984-11-29 1986-06-04 Secr Defence Improvements in or relating to coating processes
US4687684A (en) * 1984-11-29 1987-08-18 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Process for diffusion coating metals

Also Published As

Publication number Publication date
DE2126479A1 (en) 1971-12-09
CA923769A (en) 1973-04-03
US3694255A (en) 1972-09-26
SE375117B (en) 1975-04-07
JPS5248096B1 (en) 1977-12-07
DE2126479B2 (en) 1978-09-14
FR2093999A1 (en) 1972-02-04
SE392485B (en) 1977-03-28
IL36817A0 (en) 1971-07-28
CH542288A (en) 1973-09-30
IL36817A (en) 1973-10-25
DE2126479C3 (en) 1979-05-23
FR2093999B1 (en) 1974-03-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee