FR2359907A1 - DEVICE FOR THE DEPOSIT OF A METAL LAYER ON OBJECTS, WITHOUT EXTERNAL CIRCULATION OF CURRENT - Google Patents

DEVICE FOR THE DEPOSIT OF A METAL LAYER ON OBJECTS, WITHOUT EXTERNAL CIRCULATION OF CURRENT

Info

Publication number
FR2359907A1
FR2359907A1 FR7722713A FR7722713A FR2359907A1 FR 2359907 A1 FR2359907 A1 FR 2359907A1 FR 7722713 A FR7722713 A FR 7722713A FR 7722713 A FR7722713 A FR 7722713A FR 2359907 A1 FR2359907 A1 FR 2359907A1
Authority
FR
France
Prior art keywords
objects
deposit
current
metal layer
external circulation
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Withdrawn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
FR7722713A
Other languages
French (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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of FR2359907A1 publication Critical patent/FR2359907A1/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Withdrawn legal-status Critical Current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
    • 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

Abstract

For the purpose of electroless metal coating of objects by means of highly alkaline baths, vats (W) or frames consist of metals of group 8 of the Periodic Table of the Elements or of other substances having a metallic coating from this group. During the electroless metal deposition, the vat (W) or the frame in question is exposed to an anodic load with a current density of at least 4mA/dm<2>. The effective surface of the cathodic counter electrode (G) is smaller by at least an order of magnitude than the effective anode surface. These measures ensure that no metal deposition and corrosion occur on the anodic side.
FR7722713A 1976-07-28 1977-07-25 DEVICE FOR THE DEPOSIT OF A METAL LAYER ON OBJECTS, WITHOUT EXTERNAL CIRCULATION OF CURRENT Withdrawn FR2359907A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH962976A CH613475A5 (en) 1976-07-28 1976-07-28 Appliance for the electroless metal coating of objects

Publications (1)

Publication Number Publication Date
FR2359907A1 true FR2359907A1 (en) 1978-02-24

Family

ID=4353987

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7722713A Withdrawn FR2359907A1 (en) 1976-07-28 1977-07-25 DEVICE FOR THE DEPOSIT OF A METAL LAYER ON OBJECTS, WITHOUT EXTERNAL CIRCULATION OF CURRENT

Country Status (4)

Country Link
CH (1) CH613475A5 (en)
DE (1) DE2639247A1 (en)
FR (1) FR2359907A1 (en)
IT (1) IT1081633B (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
US4391841A (en) 1980-03-28 1983-07-05 Kollmorgen Technologies Corporation Passivation of metallic equipment surfaces in electroless copper deposition processes

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1277642B (en) * 1964-01-14 1968-09-12 Bayer Ag Process for the protection of metallic surfaces against metal deposition in chemical metallization baths
GB1224047A (en) * 1968-12-10 1971-03-03 Tsniitmash Method of inhibiting the formation of a coating on chemical equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1277642B (en) * 1964-01-14 1968-09-12 Bayer Ag Process for the protection of metallic surfaces against metal deposition in chemical metallization baths
GB1224047A (en) * 1968-12-10 1971-03-03 Tsniitmash Method of inhibiting the formation of a coating on chemical equipment

Also Published As

Publication number Publication date
CH613475A5 (en) 1979-09-28
IT1081633B (en) 1985-05-21
DE2639247A1 (en) 1978-02-02

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Legal Events

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