GB1163615A - Improvements in and relating to Coatings for Columbium Alloys - Google Patents

Improvements in and relating to Coatings for Columbium Alloys

Info

Publication number
GB1163615A
GB1163615A GB45039/66A GB4503966A GB1163615A GB 1163615 A GB1163615 A GB 1163615A GB 45039/66 A GB45039/66 A GB 45039/66A GB 4503966 A GB4503966 A GB 4503966A GB 1163615 A GB1163615 A GB 1163615A
Authority
GB
United Kingdom
Prior art keywords
substrate
siliconizing
coatings
coating
modifier
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
GB45039/66A
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 GB1163615A publication Critical patent/GB1163615A/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
    • C23C10/44—Siliconising
    • 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

Abstract

1,163,615. Silicide coatings on niobium alloys; siliconizing by pack-cementation. UNITED AIRCRAFT CORP. Oct.7, 1966 [Oct. 23, 1965], No.45039/66. Headings C7A and C7F. An oxidation resistant coating for Nb alloys containing at least 35% Nb consists of NbSi 2 modified by 7 to 35% of the coating of Ti with or without V and/or Cr. The coating is formed on a Nb alloy substrate containing 12 to 65% of the metal modifier (Ti with or without V and/or Cr) by subjecting the substrate to an environment produced by heating a mixture of powders comprising Si, halide salt and inert filler. E. g. the substrate may be subjected to a two-cycle pack-cementation process embedded in a siliconizing pack of composition 17% Si, 3% NaF and 80% Al 2 O 3 powders at 2200‹F. NbSi 2 coatings containing 13 to 28% Ti are produced by siliconizing Nb alloy substrates containing 23 to 55% Ti NbSi 2 coatings containing 4 to 26% Ti and either 2 to 6% V or 2 to 15% Cr (total modifier being 7 to 35%) are produced by siliconizing Nb alloy substrates containing 6 to 50% Ti and either 3 to 12% V or 3 to 29% Cr (total modifier being 12 to 65%). The substrate may contain 3 to 25% Ti, 4 to 29% Cr and 3 to 12% V, and the coating 2 to 13% Ti, 3 to 16% Cr and 2 to 6% V. Examples of substrate alloys outside the range above specified are: - (a) 60Nb - 20Ta - 15W - 5Mo (as comparison alloy without Ti modifier); (b) 96 Nb - 3 Ti - 1 Cr; (c) 94 Nb - 3 Ti - 3 V; (d) 94 Nb - 3 Ti - 3 Cr; (e) 93 Nb - 4 Ti - 3 V; (f) 91 Nb - 3 Ti - 6 Cr; (g) 90 Nb - 9 Ti - 1 Cr; (h) 39 Nb - 25 Ti - 30 Cr - 6 V; (i) 91 Nb - 3 Ti - 3 Cr - 3 V; and (j) 39 Nb - 21 Ti - 20 Ta - 15 W - 5Mo. The preferred substrate is Nb - 6 Ti - 9 V.
GB45039/66A 1965-10-23 1966-10-07 Improvements in and relating to Coatings for Columbium Alloys Expired GB1163615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50614465A 1965-10-23 1965-10-23

Publications (1)

Publication Number Publication Date
GB1163615A true GB1163615A (en) 1969-09-10

Family

ID=24013375

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45039/66A Expired GB1163615A (en) 1965-10-23 1966-10-07 Improvements in and relating to Coatings for Columbium Alloys

Country Status (6)

Country Link
US (1) US3442720A (en)
BE (1) BE688653A (en)
DE (1) DE1521572B1 (en)
FR (1) FR1497819A (en)
GB (1) GB1163615A (en)
SE (1) SE324270B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH497891A (en) * 1968-09-03 1970-10-31 Straumann Inst Ag Implant made of titanium or a titanium-based alloy, used for surgical bone treatment
US3931447A (en) * 1973-05-04 1976-01-06 The United States Of America As Represented By The United States National Aeronautics And Space Administration Fused silicide coatings containing discrete particles for protecting niobium alloys
JPS6030786Y2 (en) * 1976-02-25 1985-09-14 株式会社河合楽器製作所 key stopper device
DE2831791C2 (en) * 1978-07-19 1982-09-09 Gkss - Forschungszentrum Geesthacht Gmbh, 2000 Hamburg Component made of metallic material with a surface at risk of being charged and use therefor
US4713134A (en) * 1982-09-30 1987-12-15 Chicopee Double belt bonding of fibrous web comprising thermoplastic fibers on steam cans
CN115821258A (en) * 2022-12-06 2023-03-21 西北有色金属研究院 Heat-erosion-resistant thermal shock-resistant silicide coating and preparation method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037883A (en) * 1959-02-18 1962-06-05 Chromalloy Corp Diffusion coating of non-ferrous metals
US3015579A (en) * 1959-06-15 1962-01-02 Chromizing Corp Metal coating process
US3090702A (en) * 1961-01-23 1963-05-21 Chromizing Corp Protective coating of refractory metals
US3219474A (en) * 1962-05-11 1965-11-23 Priceman Seymour Protective coatings for columbium and its alloys
US3317343A (en) * 1963-02-01 1967-05-02 Richard A Jefferys Activated coating of columbium metal
US3307964A (en) * 1963-05-07 1967-03-07 Du Pont Process of forming protective coatings on columbium and tantalum using a fluidized bed
US3337363A (en) * 1965-03-15 1967-08-22 Ritter Pfaudler Corp High temperature coatings for columbium alloys

Also Published As

Publication number Publication date
SE324270B (en) 1970-05-25
BE688653A (en) 1967-03-31
US3442720A (en) 1969-05-06
DE1521572B1 (en) 1971-03-04
FR1497819A (en) 1967-10-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees