GB1497694A - Method and mixture for the pack aluminising of metal objects - Google Patents

Method and mixture for the pack aluminising of metal objects

Info

Publication number
GB1497694A
GB1497694A GB4441975A GB4441975A GB1497694A GB 1497694 A GB1497694 A GB 1497694A GB 4441975 A GB4441975 A GB 4441975A GB 4441975 A GB4441975 A GB 4441975A GB 1497694 A GB1497694 A GB 1497694A
Authority
GB
United Kingdom
Prior art keywords
mixture
particles
hrs
per cent
oct
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
GB4441975A
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce 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 Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB4441975A priority Critical patent/GB1497694A/en
Publication of GB1497694A publication Critical patent/GB1497694A/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
    • C23C10/48—Aluminising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)

Abstract

1497694 Aluminizing mixture ROLLS-ROYCE Ltd 28 Oct 1976 [28 Oct 1975] 44419/75 Heading C7F A pack aluminizing mixture comprises 1À5-7 wt. per cent Al particles, 0À3-1 wt. per cent ammonium halide (preferably NH4CL), 0À3-1 wt. per cent aluminium halide (preferably AlF), and the balance Al 2 O 3 particles and impurities. The Al and Al 2 O 3 particles may be up to 75Á in diameter, and the surface to be treated may be heated in contact with the mixture in an inert or reducing atmosphere at 750-1100‹C for 1-8 hrs. In the Examples, a Nibase superalloy turbine blade having small cooling holes (of 0À03 inch diameter) is blasted with Al 2 O 3 particles, the holes are filled with the mixture, held in place by a temporary binder, e.g. gum tragacanth, and the blade is embedded in the mixture and heated in argon at 1100‹C for 1À5 hrs. (Ex 1) or 750‹C for 5 hrs. (Ex 2). The mixture may also be used to aluminize Co alloys.
GB4441975A 1976-10-28 1976-10-28 Method and mixture for the pack aluminising of metal objects Expired GB1497694A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4441975A GB1497694A (en) 1976-10-28 1976-10-28 Method and mixture for the pack aluminising of metal objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4441975A GB1497694A (en) 1976-10-28 1976-10-28 Method and mixture for the pack aluminising of metal objects

Publications (1)

Publication Number Publication Date
GB1497694A true GB1497694A (en) 1978-01-12

Family

ID=10433213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4441975A Expired GB1497694A (en) 1976-10-28 1976-10-28 Method and mixture for the pack aluminising of metal objects

Country Status (1)

Country Link
GB (1) GB1497694A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7094445B2 (en) * 2002-05-07 2006-08-22 General Electric Company Dimensionally controlled pack aluminiding of internal surfaces of a hollow article
CN114032495A (en) * 2021-11-22 2022-02-11 中国航发贵州黎阳航空动力有限公司 Packing method for low-temperature aluminizing of steel blade of aircraft engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7094445B2 (en) * 2002-05-07 2006-08-22 General Electric Company Dimensionally controlled pack aluminiding of internal surfaces of a hollow article
CN114032495A (en) * 2021-11-22 2022-02-11 中国航发贵州黎阳航空动力有限公司 Packing method for low-temperature aluminizing of steel blade of aircraft engine
CN114032495B (en) * 2021-11-22 2023-12-05 中国航发贵州黎阳航空动力有限公司 Packaging method for low-temperature aluminizing of steel blade of aeroengine

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee