GB1024613A - Improvements in or relating to coating niobium-base alloys - Google Patents

Improvements in or relating to coating niobium-base alloys

Info

Publication number
GB1024613A
GB1024613A GB40770/62A GB4077062A GB1024613A GB 1024613 A GB1024613 A GB 1024613A GB 40770/62 A GB40770/62 A GB 40770/62A GB 4077062 A GB4077062 A GB 4077062A GB 1024613 A GB1024613 A GB 1024613A
Authority
GB
United Kingdom
Prior art keywords
bath
alloy
coated
subjected
solution
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
GB40770/62A
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.)
Raytheon Technologies Corp
Original Assignee
United Aircraft 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 United Aircraft Corp filed Critical United Aircraft Corp
Publication of GB1024613A publication Critical patent/GB1024613A/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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/66—Electroplating: Baths therefor from melts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9335—Product by special process
    • Y10S428/934—Electrical process
    • Y10S428/935—Electroplating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12639—Adjacent, identical composition, components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/12743—Next to refractory [Group IVB, VB, or VIB] metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12819—Group VB metal-base component

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Coating With Molten Metal (AREA)

Abstract

A niobium base alloy containing at least 40% Nb is coated with a high temperature oxidation-resistant coating of NbAl3 by electrodepositing aluminium from a molten salt bath comprising cryolite and alumina, e.g. 75-95% Na3AlF6 and 5-25% Al2O3 at 1600-1900 DEG F. The bath may also contain NaF and/or AlF3 with an operating temperature of 1350-1900 DEG F. The anode is preferably a graphite crucible container. The alloy is exposed as a cathode in the bath for 1-90 minutes at a C.D. of 0.1-3 amps./sq.m. Prior of electrodeposition the alloy, degreased with an organic solvent and etched with a solution of 2HNO3: 1HF: 1H2O, may be placed in the bath for at least 2 mins. for fluxing. Residual fluoride may be removed from the coated alloy by placing it in a molten bath of NaCl and LiCl at 1200 DEG F. to replace the fluorides with chlorides which may be removed by brushing or ultrasonic cleaning under water, or the coated alloy may be immersed in a solution of 20 g./l. CrO3 in dilute H3PO4 and subjected to ultrasonic vibrations. The coated alloy may be subjected to diffusion in air at 1600-1800 DEG F. or heated in an inert atmosphere. Examples of molten salt baths for use as electrolyte are as follows:- <TABS:1024613/C6-C7/1>
GB40770/62A 1961-11-07 1962-10-29 Improvements in or relating to coating niobium-base alloys Expired GB1024613A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US150628A US3206289A (en) 1961-11-07 1961-11-07 Coated columbium alloy articles

Publications (1)

Publication Number Publication Date
GB1024613A true GB1024613A (en) 1966-03-30

Family

ID=22535360

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40770/62A Expired GB1024613A (en) 1961-11-07 1962-10-29 Improvements in or relating to coating niobium-base alloys

Country Status (5)

Country Link
US (1) US3206289A (en)
DE (1) DE1246348B (en)
FR (1) FR1343084A (en)
GB (1) GB1024613A (en)
SE (1) SE303911B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3294497A (en) * 1966-01-26 1966-12-27 Gen Electric Coated columbium or tantalum base metal

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682101A (en) * 1946-06-01 1954-06-29 Whitfield & Sheshunoff Inc Oxidation protected tungsten and molybdenum bodies and method of producing same
US2611163A (en) * 1947-08-20 1952-09-23 Cleveland Graphite Bronze Co Method of making bearings
US2883739A (en) * 1951-04-11 1959-04-28 Kaiser Aluminium Chem Corp Composite article
US2828251A (en) * 1953-09-30 1958-03-25 Horizons Titanium Corp Electrolytic cladding process
US2807575A (en) * 1954-07-28 1957-09-24 Research Corp Method of electroplating aluminum
US3000755A (en) * 1956-10-11 1961-09-19 Gen Motors Corp Oxidation-resistant turbine blades
US3010190A (en) * 1957-02-25 1961-11-28 Kaiser Aluminium Chem Corp A composite metal body of a ferrous base and aluminum base alloy coat
US2971899A (en) * 1957-09-10 1961-02-14 Gen Motors Corp Method of electroplating aluminum
US3048497A (en) * 1958-02-18 1962-08-07 Moller Goran August Process of coating base metals with aluminum
US3055088A (en) * 1958-09-22 1962-09-25 Du Pont Composite metal body for high temperature use
US3057048A (en) * 1958-11-06 1962-10-09 Horizons Inc Protection of niobium
US2988807A (en) * 1959-05-29 1961-06-20 Gen Motors Corp Method of aluminizing cobalt base alloys and article resulting therefrom
US3078554A (en) * 1960-06-08 1963-02-26 Gen Electric Columbium base alloy article

Also Published As

Publication number Publication date
SE303911B (en) 1968-09-09
DE1246348B (en) 1967-08-03
US3206289A (en) 1965-09-14
FR1343084A (en) 1963-11-15

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