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EP0357326A3 - Inhibiting corrosion of lead or lead-alloy anodes in a chromium electroplating bath - Google Patents

Inhibiting corrosion of lead or lead-alloy anodes in a chromium electroplating bath Download PDF

Info

Publication number
EP0357326A3
EP0357326A3 EP19890308528 EP89308528A EP0357326A3 EP 0357326 A3 EP0357326 A3 EP 0357326A3 EP 19890308528 EP19890308528 EP 19890308528 EP 89308528 A EP89308528 A EP 89308528A EP 0357326 A3 EP0357326 A3 EP 0357326A3
Authority
EP
European Patent Office
Prior art keywords
lead
anode
electroplating bath
inhibiting corrosion
chromium electroplating
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Withdrawn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
EP19890308528
Other languages
German (de)
French (fr)
Other versions
EP0357326A2 (en
Inventor
Allen R. Jones
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.)
M&T Chemicals Inc
Original Assignee
M&T Chemicals 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 M&T Chemicals Inc filed Critical M&T Chemicals Inc
Publication of EP0357326A2 publication Critical patent/EP0357326A2/en
Publication of EP0357326A3 publication Critical patent/EP0357326A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium
    • 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
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/005—Anodic protection

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electroplating And Plating Baths Therefor (AREA)

Abstract

To inhibit anode corrosion, electroplating apparatus includes an anode protection circuit with an auxiliary power supply (5) for applying a protective potential, less than the plating potential and at a much lower current, to the anode (1). The protective potential is desirably applied through an auxiliary cathode (2) near the anode (1), and advantageously is left on when plating is not taking place.
EP19890308528 1988-08-26 1989-08-23 Inhibiting corrosion of lead or lead-alloy anodes in a chromium electroplating bath Withdrawn EP0357326A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US23760788A 1988-08-26 1988-08-26
US237607 1988-08-26
US35573789A 1989-05-22 1989-05-22
US355737 1989-05-22

Publications (2)

Publication Number Publication Date
EP0357326A2 EP0357326A2 (en) 1990-03-07
EP0357326A3 true EP0357326A3 (en) 1990-10-24

Family

ID=26930845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890308528 Withdrawn EP0357326A3 (en) 1988-08-26 1989-08-23 Inhibiting corrosion of lead or lead-alloy anodes in a chromium electroplating bath

Country Status (4)

Country Link
EP (1) EP0357326A3 (en)
JP (1) JPH02310397A (en)
KR (1) KR900003422A (en)
CN (1) CN1040633A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10215463C1 (en) * 2002-03-28 2003-07-24 Atotech Deutschland Gmbh Continuous plant for electrolytic metallization of printed circuit boards, includes precautions reducing electrical potential between adjacent workpieces
MX2010010437A (en) * 2008-03-28 2010-11-05 Sumitomo Metal Ind METHOD FOR PLATING MANDREL BAR WITH Cr, MANDREL BAR, AND PROCESS FOR PRODUCING SEAMLESS PIPE USING THE METHOD AND THE MANDREL BAR.
CN103088373A (en) * 2011-10-31 2013-05-08 肖云捷 Effective method for preventing scorching in electroplating process

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1148070A (en) * 1965-04-16 1969-04-10 M & T Chemicals Inc Improvements in or relating to electrodeposition of chromium
US4062741A (en) * 1975-02-24 1977-12-13 Teikoku Piston Ring Co., Ltd. Method for maintaining an electrode and an article plated or to be plated immersed in an electrolytic chromium-plating bath in a normal condition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1148070A (en) * 1965-04-16 1969-04-10 M & T Chemicals Inc Improvements in or relating to electrodeposition of chromium
US4062741A (en) * 1975-02-24 1977-12-13 Teikoku Piston Ring Co., Ltd. Method for maintaining an electrode and an article plated or to be plated immersed in an electrolytic chromium-plating bath in a normal condition

Also Published As

Publication number Publication date
CN1040633A (en) 1990-03-21
EP0357326A2 (en) 1990-03-07
KR900003422A (en) 1990-03-26
JPH02310397A (en) 1990-12-26

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