JPS5582767A - Aluminum diffusion-coating method - Google Patents

Aluminum diffusion-coating method

Info

Publication number
JPS5582767A
JPS5582767A JP15721978A JP15721978A JPS5582767A JP S5582767 A JPS5582767 A JP S5582767A JP 15721978 A JP15721978 A JP 15721978A JP 15721978 A JP15721978 A JP 15721978A JP S5582767 A JPS5582767 A JP S5582767A
Authority
JP
Japan
Prior art keywords
pack
temp
diffusion
powder
halide
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.)
Pending
Application number
JP15721978A
Other languages
Japanese (ja)
Inventor
Hiromi Kagohara
Hiroshi Fukui
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15721978A priority Critical patent/JPS5582767A/en
Publication of JPS5582767A publication Critical patent/JPS5582767A/en
Pending 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
    • 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
    • C23C10/52—Embedding in a powder mixture, i.e. pack cementation more than one element being diffused in one step

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

PURPOSE:To lower the pack treating temp., in formation of a diffusion-coated layer of Al on the surface of an article by pack cementation, by using pack powder consisting of a specified amt. of Al alloy powder contg. a restricted amt. of Ge, a halide and an inert carrier to facilitate diffusion of Al. CONSTITUTION:In formation of a diffusion-coated layer of Al on the surface of an article by pack cementation, pack powder of the following compsn. is used: 5-40% Ge-contg. Al-Ge alloy powder 5-40%, a halide such as NH4Cl 0.5-5% and an inert carrier such as alumina the balance. By this method the pack treating temp. required to obtain a predetermined pack layer thickness can be made lower than that of a conventional method. The practical pack temp. necessary to an effective thickness is 750-800 deg.C, and it is equal to or lower than the final aging temp. of a Ni alloy for a gas turbine blade material. Accordingly, the properties of base metal are slightly deteriorated by pack treatment.
JP15721978A 1978-12-15 1978-12-15 Aluminum diffusion-coating method Pending JPS5582767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15721978A JPS5582767A (en) 1978-12-15 1978-12-15 Aluminum diffusion-coating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15721978A JPS5582767A (en) 1978-12-15 1978-12-15 Aluminum diffusion-coating method

Publications (1)

Publication Number Publication Date
JPS5582767A true JPS5582767A (en) 1980-06-21

Family

ID=15644816

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15721978A Pending JPS5582767A (en) 1978-12-15 1978-12-15 Aluminum diffusion-coating method

Country Status (1)

Country Link
JP (1) JPS5582767A (en)

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