EP0161387A3 - Process for chemically stripping diffused aluminium coatings, and its use - Google Patents

Process for chemically stripping diffused aluminium coatings, and its use Download PDF

Info

Publication number
EP0161387A3
EP0161387A3 EP85100926A EP85100926A EP0161387A3 EP 0161387 A3 EP0161387 A3 EP 0161387A3 EP 85100926 A EP85100926 A EP 85100926A EP 85100926 A EP85100926 A EP 85100926A EP 0161387 A3 EP0161387 A3 EP 0161387A3
Authority
EP
European Patent Office
Prior art keywords
chemically stripping
aluminium coatings
diffused
diffused aluminium
coatings
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.)
Withdrawn
Application number
EP85100926A
Other languages
German (de)
French (fr)
Other versions
EP0161387A2 (en
Inventor
Manfred Hirschmeier
Josef Kreitl
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.)
MTU Aero Engines GmbH
Original Assignee
MTU Motoren und Turbinen Union Muenchen GmbH
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 MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Publication of EP0161387A2 publication Critical patent/EP0161387A2/en
Publication of EP0161387A3 publication Critical patent/EP0161387A3/en
Withdrawn legal-status Critical Current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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Verfahren zum chemischen Abtragen von Aluminium­ diffusionsschichten auf Werkstücken unter Verwendung ei­ ner Nitrobenzolsulfonsäure in wäßriger Lösung, bevorzugt zusammen mit anderen, an sich bekannten Bestandteilen wie Natriumverbindungen. Process for the chemical removal of aluminum diffusion layers on workpieces using egg ner nitrobenzenesulfonic acid in aqueous solution, preferred together with other components known per se like sodium compounds.

Anwendung insbesondere bei der Herstellung von Schaufeln für Verdichter und Turbinen. Application particularly in the production of Blades for compressors and turbines.

EP85100926A 1984-04-16 1985-01-30 Process for chemically stripping diffused aluminium coatings, and its use Withdrawn EP0161387A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3414383 1984-04-16
DE3414383A DE3414383C2 (en) 1984-04-16 1984-04-16 Process for the chemical removal of aluminum diffusion layers

Publications (2)

Publication Number Publication Date
EP0161387A2 EP0161387A2 (en) 1985-11-21
EP0161387A3 true EP0161387A3 (en) 1987-05-27

Family

ID=6233749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100926A Withdrawn EP0161387A3 (en) 1984-04-16 1985-01-30 Process for chemically stripping diffused aluminium coatings, and its use

Country Status (4)

Country Link
US (1) US4619707A (en)
EP (1) EP0161387A3 (en)
JP (1) JPS60224792A (en)
DE (1) DE3414383C2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01184282A (en) * 1988-01-14 1989-07-21 Nishiyama Stainless Chem Kk Masking agent
US5232619A (en) * 1990-10-19 1993-08-03 Praxair S.T. Technology, Inc. Stripping solution for stripping compounds of titanium from base metals
DE4113283C2 (en) * 1991-04-24 1994-05-05 Kernforschungsz Karlsruhe Use of an etching solution for the selective etching of a metallic sacrificial layer in the production of microstructures
US6042879A (en) * 1997-07-02 2000-03-28 United Technologies Corporation Method for preparing an apertured article to be recoated
US6494960B1 (en) * 1998-04-27 2002-12-17 General Electric Company Method for removing an aluminide coating from a substrate
US6305077B1 (en) * 1999-11-18 2001-10-23 General Electric Company Repair of coated turbine components
US10125425B2 (en) 2013-07-01 2018-11-13 General Electric Company Method for smut removal during stripping of coating
KR101539010B1 (en) * 2013-12-27 2015-07-24 한국원자력연구원 Method for etching of super alloy and the super alloy thereby

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2649361A (en) * 1949-05-13 1953-08-18 Enthone Method of dissolving metals and compostion therefor
US3095380A (en) * 1958-07-14 1963-06-25 Purex Corp Ltd Composition for removal of heat scale and carbon deposits
FR2198004A1 (en) * 1972-09-05 1974-03-29 Gen Electric
US4282041A (en) * 1978-12-05 1981-08-04 Rolls-Royce Limited Method for removing aluminide coatings from nickel or cobalt base alloys

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356550A (en) * 1964-03-16 1967-12-05 Boeing Co Chemical milling of aluminum alloys
US3300349A (en) * 1964-04-15 1967-01-24 Boeing Co Chemical milling process and related solutions for aluminum

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2649361A (en) * 1949-05-13 1953-08-18 Enthone Method of dissolving metals and compostion therefor
US3095380A (en) * 1958-07-14 1963-06-25 Purex Corp Ltd Composition for removal of heat scale and carbon deposits
FR2198004A1 (en) * 1972-09-05 1974-03-29 Gen Electric
US4282041A (en) * 1978-12-05 1981-08-04 Rolls-Royce Limited Method for removing aluminide coatings from nickel or cobalt base alloys

Also Published As

Publication number Publication date
JPS60224792A (en) 1985-11-09
US4619707A (en) 1986-10-28
DE3414383A1 (en) 1985-10-17
JPS6345462B2 (en) 1988-09-09
DE3414383C2 (en) 1986-09-04
EP0161387A2 (en) 1985-11-21

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Inventor name: KREITL, JOSEF