GB1202619A - Improvements in or relating to process of forming alloys on metallic refractory materials, and the materials so formed - Google Patents

Improvements in or relating to process of forming alloys on metallic refractory materials, and the materials so formed

Info

Publication number
GB1202619A
GB1202619A GB3722468A GB3722468A GB1202619A GB 1202619 A GB1202619 A GB 1202619A GB 3722468 A GB3722468 A GB 3722468A GB 3722468 A GB3722468 A GB 3722468A GB 1202619 A GB1202619 A GB 1202619A
Authority
GB
United Kingdom
Prior art keywords
substrate
alloy
metal
atoms
oxidation potential
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
GB3722468A
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.)
Office National dEtudes et de Recherches Aerospatiales ONERA
Original Assignee
Office National dEtudes et de Recherches Aerospatiales ONERA
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 Office National dEtudes et de Recherches Aerospatiales ONERA filed Critical Office National dEtudes et de Recherches Aerospatiales ONERA
Publication of GB1202619A publication Critical patent/GB1202619A/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
    • 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
    • C23C10/60—After-treatment

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)
  • Emergency Lowering Means (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

1,202,619. Coating by pack diffusion. OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES. Aug. 5, 1968 [Sept. 19, 1967], No. 37224/68. Heading C7F. In a pack diffusion process wherein a metallic refractory material is provided with a coating of an alloy of said material with an addition metal having an oxidation potential greater than 1, a M. pt. higher than 1500‹C, and an atomic weight greater than 90, e.g. Zr, Hf, Th, Nb, Ta, which process comprises embedding the substrate in a reactive mass containing, intimately mixed (a) an appropriate inert diluent, e.g. alumina, in the form of a very fine powder (b) a very fine alloy powder, called "prealloyed powder" and (c) at least one helogen constituent adapted to assure the transfer of said addition metal from said reactive mass to said substrate, said metallic refractory material and said reactive mass being housed in a partially permeable container disposed in a non-oxidizing atmosphere at 800-1250‹C. for from less than 1 hour up to 20 hours, the "prealloyed powder" is prepared so that it contains (1) at least one said addition metal, i.e. Zr, Hf, Th, Nb or Ta, (2) at least one "moderator metal" of oxidation potential lower than 0À5 and At. Wt. 50-200, e.g. Fe, Co, Ni, Mo, W, and (3) at least one "regulator metal", different from (2), of oxidation potential 0À4 to 1 and At. Wt. less than 60, e.g. Fe or Cr, the relative proportions of (1), (2), and (3) being such that for 100 atoms of (1) there are from 30 to 200 atoms of (2) and from 20 to 140 atoms of (3). The substrate is an alloy based on one of Fe, Co, Ni, Mo or W and may contain Al, Ti, or V, as well as refractory oxides such as ThO2. The coated substrate may be subsequently coated with Al or Al-Cr alloy, by physical or thermochemical methods.
GB3722468A 1967-09-19 1968-08-05 Improvements in or relating to process of forming alloys on metallic refractory materials, and the materials so formed Expired GB1202619A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR121522 1967-09-19

Publications (1)

Publication Number Publication Date
GB1202619A true GB1202619A (en) 1970-08-19

Family

ID=8638592

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3722468A Expired GB1202619A (en) 1967-09-19 1968-08-05 Improvements in or relating to process of forming alloys on metallic refractory materials, and the materials so formed

Country Status (4)

Country Link
DE (1) DE1796201C3 (en)
FR (1) FR1589365A (en)
GB (1) GB1202619A (en)
SE (1) SE347023B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2549548A1 (en) * 1974-11-07 1976-05-13 Gen Electric ITEM WITH IMPROVED RESISTANCE TO AMBIENT CONDITIONS AT HIGH TEMPERATURE
US4284688A (en) 1978-12-21 1981-08-18 Bbc Brown, Boveri & Company Limited Multi-layer, high-temperature corrosion protection coating
GB2213840A (en) * 1987-12-18 1989-08-23 Mtu Muenchen Gmbh Aluminium diffusion coating

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4128522A (en) * 1976-07-30 1978-12-05 Gulf & Western Industries, Inc. Method and maskant composition for preventing the deposition of a coating on a substrate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2549548A1 (en) * 1974-11-07 1976-05-13 Gen Electric ITEM WITH IMPROVED RESISTANCE TO AMBIENT CONDITIONS AT HIGH TEMPERATURE
US4284688A (en) 1978-12-21 1981-08-18 Bbc Brown, Boveri & Company Limited Multi-layer, high-temperature corrosion protection coating
GB2213840A (en) * 1987-12-18 1989-08-23 Mtu Muenchen Gmbh Aluminium diffusion coating
US4935193A (en) * 1987-12-18 1990-06-19 Mtu Motoren-Und Turbinen-Union Muenchen Gmbh Method for producing a layer protective against oxidation
GB2213840B (en) * 1987-12-18 1992-04-08 Mtu Muenchen Gmbh Oxidation preventive coating

Also Published As

Publication number Publication date
DE1796201C3 (en) 1979-06-07
FR1589365A (en) 1970-03-31
DE1796201A1 (en) 1972-03-23
DE1796201B2 (en) 1978-10-12
SE347023B (en) 1972-07-24

Similar Documents

Publication Publication Date Title
GB1532802A (en) Metallic powders
GB1439947A (en) Corrosion resistant coatings and process for making the same
KR20080065211A (en) Sputtering targets and methods for fabricating sputtering targets having multiple materials
GB1526911A (en) Coated superalloy article
GB1234378A (en)
GB1249933A (en) Improvements in diffusion metallic coating method
GB1536266A (en) Iron-titanium-mischmetal alloys for hydrogen storage
JPH02502736A (en) cold work steel
GB1166686A (en) Nickel Base Alloys and Process for their Manufacture
GB1305608A (en)
GB1188088A (en) Tungsten-Rhenium Alloys
GB1192158A (en) Shaped Structures of Sintered High-melting Metal Oxides and a Process for their Manufacture
GB1261403A (en) Cast alloys
GB1243222A (en) Sulfidation resistant alloys and structures
GB1202619A (en) Improvements in or relating to process of forming alloys on metallic refractory materials, and the materials so formed
GB1503784A (en) Cemented carbonitride alloys
GB1504547A (en) Process for making alloyed steel sintered parts and sinter powder for use in the process
JPS62185801A (en) Production of powdery amorphous material
GB1301024A (en) Molybdenum base alloys or composites
GB1288117A (en)
DE69304284D1 (en) Process for producing a sintered carbonitride alloy with improved toughness
US3892600A (en) Annealed coated air-stable cobalt-rare earth alloy particles
GB1167067A (en) Improvements in and relating to Coated Nickel Base Engine Alloys and Methods of Producing Same.
GB1338182A (en) Process for the production of valve seating rings
GB1350693A (en) Macrostructure of titanium-base alloy products

Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years