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FR2418819A1 - Procede pour eliminer des depots de carbure de tungstene appliques sur des supports en titane ou en alliage de titane - Google Patents

Procede pour eliminer des depots de carbure de tungstene appliques sur des supports en titane ou en alliage de titane

Info

Publication number
FR2418819A1
FR2418819A1 FR7835089A FR7835089A FR2418819A1 FR 2418819 A1 FR2418819 A1 FR 2418819A1 FR 7835089 A FR7835089 A FR 7835089A FR 7835089 A FR7835089 A FR 7835089A FR 2418819 A1 FR2418819 A1 FR 2418819A1
Authority
FR
France
Prior art keywords
titanium
titanium alloy
alloy substrates
carbide applied
eliminating deposits
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.)
Granted
Application number
FR7835089A
Other languages
English (en)
Other versions
FR2418819B1 (fr
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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
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 TRW Inc filed Critical TRW Inc
Publication of FR2418819A1 publication Critical patent/FR2418819A1/fr
Application granted granted Critical
Publication of FR2418819B1 publication Critical patent/FR2418819B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F5/00—Electrolytic stripping of metallic layers or coatings
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/02—Etching

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • ing And Chemical Polishing (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

Procédé pour éliminer par décapage électro-chimique les dépots de carbure de tungstène appliqués sur des supports en titane ou en alliage de titane. On immerge le support dans une solution aqueuse d'acide chromique, dans lequelle il sert d'anode, on applique, entre le support et une cathode métallique, une tension continue d'environ 6 à 50 V avec une densité de courant d'environ 0,43 à 4,3 A/dm**2 pendant une durée d'au moins 30 mn et à une température d'au moins 38 degrés C, la concentration en acide chromique étant d'environ 4 à 40 % en poids. Le procédé selon l'invention permet d'éliminer parfaitement les revêtements de carbure de tungstène.
FR7835089A 1978-03-02 1978-12-13 Procede pour eliminer des depots de carbure de tungstene appliques sur des supports en titane ou en alliage de titane Granted FR2418819A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/882,636 US4128463A (en) 1978-03-02 1978-03-02 Method for stripping tungsten carbide from titanium or titanium alloy substrates

Publications (2)

Publication Number Publication Date
FR2418819A1 true FR2418819A1 (fr) 1979-09-28
FR2418819B1 FR2418819B1 (fr) 1983-08-19

Family

ID=25381014

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7835089A Granted FR2418819A1 (fr) 1978-03-02 1978-12-13 Procede pour eliminer des depots de carbure de tungstene appliques sur des supports en titane ou en alliage de titane

Country Status (13)

Country Link
US (1) US4128463A (fr)
JP (1) JPS54118351A (fr)
BE (1) BE872816A (fr)
CA (1) CA1105878A (fr)
CH (1) CH635872A5 (fr)
DE (1) DE2907875C2 (fr)
FR (1) FR2418819A1 (fr)
GB (1) GB2015575B (fr)
IL (1) IL56085A (fr)
IT (1) IT1109648B (fr)
NL (1) NL7811891A (fr)
SE (1) SE427676B (fr)
SG (1) SG55782G (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7805669A (nl) * 1978-05-25 1979-11-27 Skf Ind Trading & Dev Werkwijze om afval van hardmetaal te ontleden.
US4385972A (en) * 1979-09-14 1983-05-31 Gte Products Corporation Electrolytic disintegration of sintered metal carbides
US4356069A (en) * 1981-03-09 1982-10-26 Ross Cunningham Stripping composition and method for preparing and using same
US4851093A (en) * 1988-06-06 1989-07-25 United Technologies Corporation Selective decomposition of a chromium carbide coating from a chromium carbide coated nickel alloy substrate
US4975163A (en) * 1989-12-27 1990-12-04 Intel Corporation Electrochemical refractory metal stripper and parts cleaning process
US5062941A (en) * 1990-10-22 1991-11-05 Union Carbide Coatings Service Technology Corporation Electrolytic process for stripping a metal coating from a titanium based metal substrate
GB9700819D0 (en) * 1997-01-16 1997-03-05 Gkn Westland Helicopters Ltd Method of and apparatus for removing a metallic component from attachmet to a helicopter blade
US5853561A (en) * 1997-06-23 1998-12-29 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method for surface texturing titanium products
US6176999B1 (en) 1998-12-18 2001-01-23 United Technologies Corporation Feedback controlled stripping of airfoils
US6165345A (en) * 1999-01-14 2000-12-26 Chromalloy Gas Turbine Corporation Electrochemical stripping of turbine blades
US6352636B1 (en) * 1999-10-18 2002-03-05 General Electric Company Electrochemical system and process for stripping metallic coatings
US6627064B1 (en) * 2000-10-23 2003-09-30 Unaxis Balzers Aktiengesellschaft Method for removing the hard material coating applied on a hard metal workpiece and a holding device for at least one workpiece
US6761807B2 (en) * 2002-03-09 2004-07-13 United Technologies Corporation Molded tooling for use in airfoil stripping processes
US6969457B2 (en) * 2002-10-21 2005-11-29 General Electric Company Method for partially stripping a coating from the surface of a substrate, and related articles and compositions
CA2645387A1 (fr) * 2008-11-27 2010-05-27 Kudu Industries Inc. Methode de decapage electrolytique de substrat metallise par pulverisation
US8541115B2 (en) * 2009-01-30 2013-09-24 United Technologies Corporation Oxide coating foundation for promoting TBC adherence
CN103397373A (zh) * 2010-06-25 2013-11-20 张红雨 一种退镀溶液
US9656873B2 (en) 2013-11-21 2017-05-23 Kennametal Inc. Purification of tungsten carbide compositions
WO2016147709A1 (fr) 2015-03-13 2016-09-22 奥野製薬工業株式会社 Agent de décapage électrolytique pour un gabarit
CN106086919B (zh) * 2016-06-07 2017-11-21 安阳工学院 一种二维二硫化钼、二硫化钨纳米薄片电化学制备方法
EP3438330B9 (fr) * 2017-08-03 2024-08-14 Groz-Beckert KG Partie d'outil de machine textile et procédé de fabrication d'un outil textile
CN110284180A (zh) * 2019-07-09 2019-09-27 中国航发哈尔滨东安发动机有限公司 一种碳化钨耐磨涂层去除方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1282902A (fr) * 1960-05-03 1962-01-27 Charmilles Sa Ateliers Procédé d'usinage électrolytique
US4060467A (en) * 1971-01-15 1977-11-29 Mitsubishi Denki Kabushiki Kaisha Electrolytic machining system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316579A (en) * 1940-04-10 1943-04-13 Western Electric Co Method for removing metal coatings from bases
US3632490A (en) * 1968-11-12 1972-01-04 Titanium Metals Corp Method of electrolytic descaling and pickling
US3793172A (en) * 1972-09-01 1974-02-19 Western Electric Co Processes and baths for electro-stripping plated metal deposits from articles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1282902A (fr) * 1960-05-03 1962-01-27 Charmilles Sa Ateliers Procédé d'usinage électrolytique
US4060467A (en) * 1971-01-15 1977-11-29 Mitsubishi Denki Kabushiki Kaisha Electrolytic machining system

Also Published As

Publication number Publication date
US4128463A (en) 1978-12-05
GB2015575A (en) 1979-09-12
BE872816A (fr) 1979-06-15
SE427676B (sv) 1983-04-25
IT7869871A0 (it) 1978-12-15
GB2015575B (en) 1982-08-11
CH635872A5 (fr) 1983-04-29
CA1105878A (fr) 1981-07-28
IL56085A (en) 1981-10-30
NL7811891A (nl) 1979-09-04
FR2418819B1 (fr) 1983-08-19
DE2907875C2 (de) 1986-11-06
IT1109648B (it) 1985-12-23
DE2907875A1 (de) 1979-09-13
JPS54118351A (en) 1979-09-13
SG55782G (en) 1983-09-02
SE7812201L (sv) 1979-09-03
JPS6156320B2 (fr) 1986-12-02

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