GB934542A - Protective coating on refractory metals - Google Patents

Protective coating on refractory metals

Info

Publication number
GB934542A
GB934542A GB1824/62A GB182462A GB934542A GB 934542 A GB934542 A GB 934542A GB 1824/62 A GB1824/62 A GB 1824/62A GB 182462 A GB182462 A GB 182462A GB 934542 A GB934542 A GB 934542A
Authority
GB
United Kingdom
Prior art keywords
boron
silicon
source
inert diluent
metal
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
GB1824/62A
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.)
Chromizing Corp
Original Assignee
Chromizing 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 Chromizing Corp filed Critical Chromizing Corp
Publication of GB934542A publication Critical patent/GB934542A/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
    • C23C12/00—Solid state diffusion of at least one non-metal element other than silicon and at least one metal element or silicon into metallic material surfaces
    • C23C12/02—Diffusion in one step
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/02—Surface coverings of combustion-gas-swept parts
    • 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
    • Y10S428/938—Vapor deposition or gas diffusion
    • 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
    • Y10S428/941—Solid state alloying, e.g. diffusion, to disappearance of an original layer
    • 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
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y10T428/12139—Nonmetal particles in particulate 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
    • Y10T428/12812—Diverse refractory group metal-base components: alternative to or next to each other

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Powder Metallurgy (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Chemically Coating (AREA)

Abstract

A base metal of the group consisting of molybdenum, tantalum, tungsten, niobium, and alloys thereof including other metals such as 0.5% titanium or zirconium, is heated in a non-oxidizing atmosphere in contact with a powdered mixture containing an inert diluent, a silicon and boron source and a halogen source, to diffuse silicon and boron into the surface of the base metal to form a continuous protective coating rendering the metal resistant to oxidation in such parts as nozzles, blades, vanes and shells which are required to operate in air at 1800 DEG to 3600 DEG F. The silicon and boron, which may be elemental and powdered to 60-325 mesh (Tyler) size or of other source such as ferro-silicon and ferro-boron, are preferably heated and alloyed together. Both alloying and diffusion may occur at 1600 DEG to 2200 DEG F. The inert diluent may be a refractory material of grain size 50-350 mesh (Tyler), e.g. clay, kaolin, zirconia, beryllia, alumina. The halogen source may be fluorine, chlorine, bromine or iodine, or metal or ammonium halides, preferably ammonium bifluoride. An example of a diffusion pack composition by weight is: Si 5-70%, B 1/8 -10%, halogen source 0.1-1%, inert diluent 25-75%. A molybdenum alloy containing 0.5% Ti and 0.07% Zr is specified.
GB1824/62A 1961-01-23 1962-01-18 Protective coating on refractory metals Expired GB934542A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83953A US3090702A (en) 1961-01-23 1961-01-23 Protective coating of refractory metals

Publications (1)

Publication Number Publication Date
GB934542A true GB934542A (en) 1963-08-21

Family

ID=22181727

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1824/62A Expired GB934542A (en) 1961-01-23 1962-01-18 Protective coating on refractory metals

Country Status (3)

Country Link
US (1) US3090702A (en)
DE (1) DE1446118B2 (en)
GB (1) GB934542A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307964A (en) * 1963-05-07 1967-03-07 Du Pont Process of forming protective coatings on columbium and tantalum using a fluidized bed
DE1496176C3 (en) * 1964-06-12 1975-02-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Catalysts for fuel electrodes of fuel elements with acidic electrolytes
US3409459A (en) * 1965-03-10 1968-11-05 Du Pont Fluidized bed coating of titaniumchromium alloy
US3442720A (en) * 1965-10-23 1969-05-06 United Aircraft Corp Method of forming ti-modified silicide coatings on cb-base substrates and resulting articles
US3455745A (en) * 1966-07-08 1969-07-15 Dow Corning Coating of objects with tetraboron silicide
US3607367A (en) * 1968-04-01 1971-09-21 Gen Technologies Corp High-strength, high-modulus, low density, boron silicide monofilaments, and method of making same
US3622374A (en) * 1969-01-14 1971-11-23 Ritter Praulder Corp Diffusion coating of ferrous articles
US3787245A (en) * 1970-10-26 1974-01-22 Inst Haertereitechn Method for the boration of titanium and titanium alloys
US3936327A (en) * 1972-09-07 1976-02-03 Elektroschmelzwerk Kempten Gmbh Boriding composition
US3859144A (en) * 1973-06-27 1975-01-07 United Aircraft Corp Method for producing nickel alloy bonding foil
US5455068A (en) * 1994-04-28 1995-10-03 Aves, Jr.; William L. Method for treating continuous extended lengths of tubular member interiors
US5613299A (en) * 1994-11-09 1997-03-25 Ring; Peter J. Method of fabricating a rocket thrust chamber
GB9915430D0 (en) 1999-07-01 1999-09-01 Artemis Intelligent Power Limi A heat engine system
US6340398B1 (en) * 2000-04-04 2002-01-22 The United States Of America As Represented By The Secretary Of The Air Force Oxidation protective coating for Mo-Si-B alloys
US7005191B2 (en) * 2003-05-01 2006-02-28 Wisconsin Alumni Research Foundation Oxidation resistant coatings for ultra high temperature transition metals and transition metal alloys
US8316679B2 (en) 2010-10-04 2012-11-27 Siemens Industry, Inc. Boronized laying pipe
CN109972081A (en) * 2019-05-05 2019-07-05 中国人民解放军空军工程大学 A kind of molybdenum silicon boron powder for metal part surface infiltration layer and preparation method thereof and infiltration layer preparation method
CN110863172A (en) * 2019-11-16 2020-03-06 北方民族大学 Cr-Si-Zr-B permeating agent and application method thereof on tantalum and tantalum alloy surface
CN116397228B (en) * 2023-06-06 2023-08-22 中南大学 Method for preparing alloy/tantalum carbide composite coating on graphite surface

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2924004A (en) * 1960-02-09 Refractory metal bodies
GB191219461A (en) * 1912-08-24 1913-08-21 Giulio Sirovich Improvements in or relating to the Cementation of Metals.
US2665998A (en) * 1950-03-18 1954-01-12 Fansteel Metallurgical Corp Method of preparing highly refractory bodies
US2865088A (en) * 1952-10-16 1958-12-23 Fansteel Metallurgical Corp Refractory metal bodies
US2811466A (en) * 1953-03-18 1957-10-29 Metal Diffusions Inc Process of chromizing
US2887420A (en) * 1956-04-06 1959-05-19 Bristol Aero Engines Ltd Surface treatments for articles made from heat resisting alloys
US2920006A (en) * 1957-12-13 1960-01-05 Leonard F Yntema Highly refractive molybdenum bodies and method of preparing same

Also Published As

Publication number Publication date
DE1446118A1 (en) 1969-03-20
DE1446118B2 (en) 1970-12-10
US3090702A (en) 1963-05-21

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