GB1338527A - Aqueous electrolytic stripping bath - Google Patents

Aqueous electrolytic stripping bath

Info

Publication number
GB1338527A
GB1338527A GB2659372A GB2659372A GB1338527A GB 1338527 A GB1338527 A GB 1338527A GB 2659372 A GB2659372 A GB 2659372A GB 2659372 A GB2659372 A GB 2659372A GB 1338527 A GB1338527 A GB 1338527A
Authority
GB
United Kingdom
Prior art keywords
bath
sulphonic acid
alloy
june
high temp
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
GB2659372A
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.)
Dillenberg Bergische Metall
Original Assignee
Dillenberg Bergische Metall
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 Dillenberg Bergische Metall filed Critical Dillenberg Bergische Metall
Publication of GB1338527A publication Critical patent/GB1338527A/en
Expired 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1338527 Electrolytic stripping bath BERGISCHE METALLWARENFABRIK DILLENBERG & CO K G 7 June 1972 [23 June 1971] 26593/72 Heading C7B A bath for electrolytic detachment of coatings composed of NiO, Ag, Au or Cr from support bodies of Cu, Cu alloy, tin alloy, stainless steel, high temp nickel base alloy, or high temp chronium base alloy, the bath comprising 750- 935 like of sulphur-containing acid, alkyl sulphonic acid, aryl sulphonic acid as a stripping component and 60-200 cc/ litre of an alcohol selected from the group consisting of methanol and ethanol, the current being 5-25 amp/dm<SP>2</SP> and the temperature 20-80‹C. A nitro aromatic compound is used as an accelerator in amount 5-50 cc per litre of bath namely mononitrobenzene, dinetrobenzene trinitrobenzene, mononitrotoluene and mono, di- and tri-nitrobenzoic acids. A typical composition is 900 cc phenol sulphonic acid 80 cc methyl alcohol 20 cc mononitrotoleune.
GB2659372A 1971-06-23 1972-06-07 Aqueous electrolytic stripping bath Expired GB1338527A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712131078 DE2131078A1 (en) 1971-06-23 1971-06-23 Bath for the electrolytic removal of coatings made of silver, chromium or nickel oxide from basic bodies made of copper, copper alloy, tin alloy, stainless steel or superalloys

Publications (1)

Publication Number Publication Date
GB1338527A true GB1338527A (en) 1973-11-28

Family

ID=5811530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2659372A Expired GB1338527A (en) 1971-06-23 1972-06-07 Aqueous electrolytic stripping bath

Country Status (3)

Country Link
US (1) US3788958A (en)
DE (1) DE2131078A1 (en)
GB (1) GB1338527A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2229735A (en) * 1989-03-17 1990-10-03 Bostock Jill Electrolytic recovery of precious metals from electromechanical contacts
EP1302569A2 (en) * 2001-10-11 2003-04-16 Shipley Co. L.L.C. Stripping solution

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5479131A (en) * 1977-12-07 1979-06-23 Okuno Chem Ind Co Electrolytic bath for removing electrodeposited metal on stainless steel substrate
US4234397A (en) * 1978-08-15 1980-11-18 United Technologies Corporation Nondestructive metallographic examination of gas turbine components
US4324626A (en) * 1979-11-13 1982-04-13 United Technologies Corporation Selective removal of nickel-based braze alloy from nickel-based metals
US4261804A (en) * 1979-11-13 1981-04-14 United Technologies Corporation Selective removal of nickel-based alloys from ferrous-based metals
HU186150B (en) * 1982-10-29 1985-06-28 Latszereszeti Eszkoezoek Gyara Process for the removal electrolitically of nickel, chrome ot gold layers from the surface of copper or cupric alloys and equipemnt for carrying out the process
US4705617A (en) * 1983-05-06 1987-11-10 Sensormedics Corporation Apparatus for deplating cutaneous gas sensors
US6352636B1 (en) * 1999-10-18 2002-03-05 General Electric Company Electrochemical system and process for stripping metallic coatings
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
US20160319444A1 (en) 2013-12-20 2016-11-03 Greene Lyon Group, Inc. Method and apparatus for recovery of noble metals, including recovery of noble metals from plated and/or filled scrap
US11136681B2 (en) 2015-06-24 2021-10-05 Greene Lyon Group, Inc. Selective removal of noble metals using acidic fluids, including fluids containing nitrate ions

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2229735A (en) * 1989-03-17 1990-10-03 Bostock Jill Electrolytic recovery of precious metals from electromechanical contacts
GB2229735B (en) * 1989-03-17 1993-05-19 Bostock Jill Recovery of precious metals from electro-mechanical contacts
EP1302569A2 (en) * 2001-10-11 2003-04-16 Shipley Co. L.L.C. Stripping solution
EP1302569A3 (en) * 2001-10-11 2004-03-03 Shipley Co. L.L.C. Stripping solution

Also Published As

Publication number Publication date
DE2131078A1 (en) 1972-12-28
US3788958A (en) 1974-01-29

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed