GB1525322A - Method for stripping aluminide coatings - Google Patents

Method for stripping aluminide coatings

Info

Publication number
GB1525322A
GB1525322A GB4191/76A GB419176A GB1525322A GB 1525322 A GB1525322 A GB 1525322A GB 4191/76 A GB4191/76 A GB 4191/76A GB 419176 A GB419176 A GB 419176A GB 1525322 A GB1525322 A GB 1525322A
Authority
GB
United Kingdom
Prior art keywords
stripping
aluminide coatings
cobalt
nickel
per cent
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
GB4191/76A
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 Technologies 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 Technologies Corp filed Critical United Technologies Corp
Publication of GB1525322A publication Critical patent/GB1525322A/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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/44—Compositions for etching metallic material from a metallic material substrate of different composition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/288—Protective coatings for blades

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

Objects made of a superalloy on the basis of nickel, cobalt or nickel-cobalt, with a chromium content of at least 6 per cent by weight, have the aluminide coating removed therefrom by means of an aqueous solution which consists of an effective amount of HNO3 within a range of from 5 to 40 per cent by volume, the remainder being water, at a temperature of from 10 to 45 DEG C for a time sufficient to dissolve the coating, preferably at least 15 min.
GB4191/76A 1975-02-10 1976-02-03 Method for stripping aluminide coatings Expired GB1525322A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54832275A 1975-02-10 1975-02-10

Publications (1)

Publication Number Publication Date
GB1525322A true GB1525322A (en) 1978-09-20

Family

ID=24188340

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4191/76A Expired GB1525322A (en) 1975-02-10 1976-02-03 Method for stripping aluminide coatings

Country Status (14)

Country Link
JP (1) JPS51105931A (en)
AU (1) AU499835B2 (en)
BE (1) BE838323A (en)
CH (1) CH619985A5 (en)
DE (1) DE2604731A1 (en)
DK (1) DK38276A (en)
FR (1) FR2300142A1 (en)
GB (1) GB1525322A (en)
IL (1) IL48986A (en)
IT (1) IT1055176B (en)
NL (1) NL7601108A (en)
NO (1) NO142088C (en)
SE (1) SE7601061L (en)
ZA (1) ZA76582B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1437425A1 (en) * 2003-01-09 2004-07-14 General Electric Company Method for removing aluminide coating from metal substrate and turbine engine part so treated

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2066386B (en) * 1979-12-26 1983-10-12 Gen Electric Filler removal method
EP0713957A1 (en) * 1994-11-25 1996-05-29 FINMECCANICA S.p.A. AZIENDA ANSALDO Method of repairing the coating of turbine blades
US5695659A (en) * 1995-11-27 1997-12-09 United Technologies Corporation Process for removing a protective coating from a surface of an airfoil
GB9814075D0 (en) * 1998-06-29 1998-08-26 Ge Aircraft Engine Services Li Method of stripping a coating from an aircraft engine part
CN109338367A (en) * 2018-11-26 2019-02-15 中国航发沈阳黎明航空发动机有限责任公司 A kind of process removing plasma spraying NiAl coating

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1437425A1 (en) * 2003-01-09 2004-07-14 General Electric Company Method for removing aluminide coating from metal substrate and turbine engine part so treated
US7008553B2 (en) 2003-01-09 2006-03-07 General Electric Company Method for removing aluminide coating from metal substrate and turbine engine part so treated
SG129269A1 (en) * 2003-01-09 2007-02-26 Gen Electric Method for removing aluminide coating from metal substrate and turbine engine part so treated
US7270764B2 (en) 2003-01-09 2007-09-18 General Electric Company Method for removing aluminide coating from metal substrate and turbine engine part so treated

Also Published As

Publication number Publication date
NO760403L (en) 1976-08-11
FR2300142A1 (en) 1976-09-03
NL7601108A (en) 1976-08-12
FR2300142B1 (en) 1980-11-14
AU499835B2 (en) 1979-05-03
IT1055176B (en) 1981-12-21
BE838323A (en) 1976-05-28
NO142088C (en) 1980-06-25
JPS51105931A (en) 1976-09-20
DK38276A (en) 1976-08-11
IL48986A0 (en) 1976-04-30
SE7601061L (en) 1976-08-11
IL48986A (en) 1978-07-31
NO142088B (en) 1980-03-17
DE2604731A1 (en) 1976-08-19
CH619985A5 (en) 1980-10-31
ZA76582B (en) 1977-01-26
AU1076176A (en) 1977-08-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee