GB1175070A - Improvements in Currentless Chemical Metallizing Plating Processes - Google Patents

Improvements in Currentless Chemical Metallizing Plating Processes

Info

Publication number
GB1175070A
GB1175070A GB5765366A GB5765366A GB1175070A GB 1175070 A GB1175070 A GB 1175070A GB 5765366 A GB5765366 A GB 5765366A GB 5765366 A GB5765366 A GB 5765366A GB 1175070 A GB1175070 A GB 1175070A
Authority
GB
United Kingdom
Prior art keywords
plating
bath
rectifier
dec
cathode
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
GB5765366A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB1175070A publication Critical patent/GB1175070A/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
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/22—Monitoring arrangements therefor
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1619—Apparatus for electroless plating
    • C23C18/1621—Protection of inner surfaces of the apparatus
    • C23C18/1623—Protection of inner surfaces of the apparatus through electrochemical processes
    • 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
    • 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
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/04—Controlling or regulating desired parameters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

1,175,070. Automatic control systems for chemical plating. FARBENFABRIKEN BAYER A. G. Dec.23, 1966 [Dec. 30, 1965], No.57653/66. Heading G3R. In an installation of the type including a bath for the metallic plating of articles by chemical action, those metal surfaces in contact with the bath which have to be protected against unwanted plating are included in an anodic passivation system, the anodic potential of the protected surfaces being automatically maintained at the necessary value by a feedback control circuit. As shown, a plating bath having a metallic surface which has to remain unplated contains a plating liquid in which are immersed a reference electrode 2 and a cathode 11. The voltage ui between the said surface and the electrode 2 is compared in a differential amplifier 1 with a reference voltage derived from a transformer winding 3 by way of a rectifier 4, a capacitor 5, a resistor 6, a Zener diode 7 and a potentiometer 8; any resulting error signal is applied to transistors 9, 10, which are connected as a Darlington pair and which control the passivating current flowing between the surface and the cathode 11 in such a manner that the surface is maintained at the desired positive potential. The passivating current is derived from a transformer winding 12 by way of a rectifier 13 and a capacitor 14. Batteries 17, 18 associated with a relay 19 provides a standby power supply should there be a mains failure.
GB5765366A 1965-12-30 1966-12-23 Improvements in Currentless Chemical Metallizing Plating Processes Expired GB1175070A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965F0048059 DE1521246B2 (en) 1965-12-30 1965-12-30 PROCESS AND CIRCUIT FOR THE PROTECTION OF METALLIC SURFACES AGAINST CHEMICAL METALLIZATION

Publications (1)

Publication Number Publication Date
GB1175070A true GB1175070A (en) 1969-12-23

Family

ID=7102012

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5765366A Expired GB1175070A (en) 1965-12-30 1966-12-23 Improvements in Currentless Chemical Metallizing Plating Processes

Country Status (9)

Country Link
AT (1) AT267653B (en)
BE (1) BE692059A (en)
CH (1) CH487260A (en)
DE (1) DE1521246B2 (en)
ES (1) ES335049A1 (en)
FR (1) FR1507056A (en)
GB (1) GB1175070A (en)
NL (1) NL6617895A (en)
SE (1) SE305349B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5767780A (en) * 1979-04-30 1980-11-06 Kollmorgen Technologies Corporation Passivating equipment for electroless depositing copper
DE4314924A1 (en) * 1992-06-12 1993-12-16 Metallgesellschaft Ag Method and device for controlling corrosion protection systems

Also Published As

Publication number Publication date
FR1507056A (en) 1967-12-22
SE305349B (en) 1968-10-21
DE1521246A1 (en) 1969-07-24
NL6617895A (en) 1967-07-03
DE1521246B2 (en) 1976-06-16
ES335049A1 (en) 1967-11-16
BE692059A (en) 1967-06-30
CH487260A (en) 1970-03-15
AT267653B (en) 1969-01-10

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees