GB1150006A - Improvements in or relating to protection coatings for high temperature alloys - Google Patents

Improvements in or relating to protection coatings for high temperature alloys

Info

Publication number
GB1150006A
GB1150006A GB35965/66A GB3596566A GB1150006A GB 1150006 A GB1150006 A GB 1150006A GB 35965/66 A GB35965/66 A GB 35965/66A GB 3596566 A GB3596566 A GB 3596566A GB 1150006 A GB1150006 A GB 1150006A
Authority
GB
United Kingdom
Prior art keywords
layer
article
mixture
powder
heating
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
GB35965/66A
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 GB1150006A publication Critical patent/GB1150006A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
    • C22C32/0026—Matrix based on Ni, Co, Cr or alloys thereof
    • 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
    • C23C10/54—Diffusion of at least chromium
    • C23C10/56—Diffusion of at least chromium and at least aluminium
    • 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
    • Y10S428/923—Physical dimension
    • Y10S428/924—Composite
    • Y10S428/926—Thickness of individual layer specified
    • 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.]
    • Y10T428/1266—O, S, or organic compound in metal 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.]
    • Y10T428/12736—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.]
    • Y10T428/12736—Al-base component
    • Y10T428/1275—Next to Group VIII or IB 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
    • Y10T428/12826—Group VIB metal-base component
    • Y10T428/12847—Cr-base component
    • Y10T428/12854—Next to Co-, Fe-, or Ni-base component

Abstract

1,150,006. Diffusion coating; dispersion strengthened nickel alloys. UNITED AIRCRAFT CORP. Aug.11, 1966 [Aug.16, 1965], No.35965/66. Headings C7A and C7F. A Ni-, Co- or Febase heat resistant alloy article, e.g. a gas-turbine blade or vane, is protected against oxidation, corrosion and erosion at operating temperatures above 1200‹C. while subjected to combustion gases by contacting it first with a finely divided mixture comprising Cr powder and a halogen-bearing compound as activator and heating between 982‹ C . and the melting point of the alloy (1454‹C. for Ni-base alloy) to provide an adherent Cr layer, then with a similar mixture, but additionally containing Al powder, and heating between 538‹C. and the melting point of the alloy to provide an adherent Cr-Al (aluminide) layer on the Cr layer. The diffusion heating is conducted in the absence of deleterious gas, e.g. under vacuum or in an atmosphere of He, A and/or H 2 . The mixture may be in powder pack form and the article immersed therein, or the article may be coated with an aqueous slurry of the mixture and dried, prior to diffusion heating. Either mixture may also contain an inert filler powder such as alumina, zirconia, titania, ceria, magnesia, hafnia or rare earth metal oxide. The activator powder may be CrCl 3 , CrBr 3 , CrI 3 , CrF 3 , NaCl, KCl, KF, NH 4 Cl, NH 4 I or NH 4 Br. The article may be of dispersion strengthened Ni-base alloy containing at least 60% Ni, 0À02 to 20% of dispersed ThO 2 , Al 2 O 3 , ZrO 2 , TiO 2 , MgO, HfO 2 or rare earth metal oxide, and balance Fe, Co, Al, Cu, Cr, Mo, W, Ti, Ta and/or Re; e.g. 2% ThO 2 20% Cr and/or 15% Mo, balance Ni. Where a Ni-base alloy article is chromized at a rate in excess of that at which Cr diffuses in the Ni, a discrete body-centered-cubic Cr layer is formed; this layer is absent where the Cr is deposited at the same rate as the diffusion rate. In either case, outer layers comprise a layer of Ni 3 Al + Cr (bonded over the layer of Cr containing Al and/or Ni, or a layer of Al + Ni - Cr) over which is bonded a layer of NiAl + Cr. The chromium layer may have a thickness of 2.54.10<SP>-</SP><SP>3</SP> to 2.54.10 <SP>2</SP> cm.
GB35965/66A 1965-08-16 1966-08-11 Improvements in or relating to protection coatings for high temperature alloys Expired GB1150006A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48002965A 1965-08-16 1965-08-16

Publications (1)

Publication Number Publication Date
GB1150006A true GB1150006A (en) 1969-04-30

Family

ID=23906390

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35965/66A Expired GB1150006A (en) 1965-08-16 1966-08-11 Improvements in or relating to protection coatings for high temperature alloys

Country Status (4)

Country Link
US (1) US3556744A (en)
DE (1) DE1521570C3 (en)
FR (1) FR1511571A (en)
GB (1) GB1150006A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2394960B (en) * 2002-11-04 2007-04-25 Doncasters Ltd High temperature alloys

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3649883A (en) * 1970-08-17 1972-03-14 Motorola Inc Semiconductor device having a recombination ring
US3779719A (en) * 1970-12-03 1973-12-18 Chromalloy American Corp Diffusion coating of jet engine components and like structures
US4142023A (en) * 1975-12-16 1979-02-27 United Technologies Corporation Method for forming a single-phase nickel aluminide coating on a nickel-base superalloy substrate
US4528043A (en) * 1982-05-14 1985-07-09 Rolls-Royce Limited Surface oxide layer treatment
JPH06506265A (en) * 1991-03-14 1994-07-14 ザ・ダウ・ケミカル・カンパニー Method for incorporating metal-containing substances into densified ceramic or cermet objects, and metal-containing objects produced thereby
US7390535B2 (en) 2003-07-03 2008-06-24 Aeromet Technologies, Inc. Simple chemical vapor deposition system and methods for depositing multiple-metal aluminide coatings
DE102009002868A1 (en) * 2009-05-06 2010-11-18 Inncoa Gmbh Method for applying a multi-layered layer structure to a substrate and substrate having a multi-layered layer structure
DE102012109782A1 (en) * 2012-10-15 2014-04-17 Karlsruher Institut für Technologie layer composite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2394960B (en) * 2002-11-04 2007-04-25 Doncasters Ltd High temperature alloys

Also Published As

Publication number Publication date
US3556744A (en) 1971-01-19
DE1521570B2 (en) 1973-02-01
FR1511571A (en) 1968-02-02
DE1521570A1 (en) 1969-05-29
DE1521570C3 (en) 1973-09-13

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees