GB1122795A - Improvements in corrosion-resisting decorative chromium electrolytic deposits - Google Patents

Improvements in corrosion-resisting decorative chromium electrolytic deposits

Info

Publication number
GB1122795A
GB1122795A GB41936/65A GB4193665A GB1122795A GB 1122795 A GB1122795 A GB 1122795A GB 41936/65 A GB41936/65 A GB 41936/65A GB 4193665 A GB4193665 A GB 4193665A GB 1122795 A GB1122795 A GB 1122795A
Authority
GB
United Kingdom
Prior art keywords
cracking
plating
bright
bath
electrolytically
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
GB41936/65A
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of GB1122795A publication Critical patent/GB1122795A/en
Expired 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
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
    • C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/605—Surface topography of the layers, e.g. rough, dendritic or nodular layers
    • C25D5/611—Smooth layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/625—Discontinuous layers, e.g. microcracked layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9335—Product by special process
    • Y10S428/934—Electrical process
    • Y10S428/935—Electroplating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12472—Microscopic interfacial wave or roughness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826—Group VIB metal-base component
    • Y10T428/12847—Cr-base component
    • Y10T428/12854—Next to Co-, Fe-, or Ni-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component

Abstract

A micro-cracked Cr coating (i.e. one having cracks spaced from one another by 10-50 microns) is produced on an object by electrolytically depositing an intermediate Ni layer in such a manner that during subsequent electro-plating of the Cr the Ni and Cr simultaneously micro-crack. The Ni plating is carried out in an aqueous acid Ni bath at a maximum temperature of 35 DEG C. and a current density between 1 and 15 A/dm2, the bath comprising on the one hand nickel chloride, sulphamate or fluoborate and on the other hand one or more of ammonium acetate and of the following acids and their nickel salts:- acetic, gluconic, tartaric, formic, malic, lactic, citric and succinic acids. Prior to electro-plating with the cracking Ni, the object may be degreased and be plated with Cu, brass or dull, levelling, semi-bright or bright Ni. The cracking Ni electrolyte may contain a brightening agent which is a sulphonate, sulphonamide or sulphonimide of an aromatic compound (e.g. saccharine), butyne 1-4 diol, or an amino derivative of a heterocyclic compound (e.g. 2-amino-thiazole) or a Co salt. During the plating, of the cracking Ni, impurities may be removed from the electrolyte by known methods, e.g. electrolytically. When cracking- Ni is to be plated on bright Ni, the bright Ni may be depassivated electrolytically in a bath containing NaOH, Na2CO3 and NaCN. Conventional Cr plating baths may be used comprising as catalysts the sulphuric, hydrofluoric and fluosilicic ions. The use of Cr baths containing Se and of Ni baths containing particles which are insoluble in the Ni is said to be not incompatible with the use of the cracking deposits specified above.
GB41936/65A 1964-10-12 1965-10-04 Improvements in corrosion-resisting decorative chromium electrolytic deposits Expired GB1122795A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR991133A FR1447970A (en) 1964-10-12 1964-10-12 Corrosion resistant decorative chrome deposits
FR996104A FR88318E (en) 1964-10-12 1964-11-24 Corrosion resistant decorative chrome deposits
FR3489A FR89217E (en) 1964-10-12 1965-01-27 Corrosion resistant decorative chrome deposits
FR11348A FR89657E (en) 1964-10-12 1965-03-31 Corrosion resistant decorative chrome deposits
FR57477A FR90417E (en) 1964-10-12 1966-04-13 Corrosion resistant decorative chrome deposits

Publications (1)

Publication Number Publication Date
GB1122795A true GB1122795A (en) 1968-08-07

Family

ID=27514668

Family Applications (2)

Application Number Title Priority Date Filing Date
GB41936/65A Expired GB1122795A (en) 1964-10-12 1965-10-04 Improvements in corrosion-resisting decorative chromium electrolytic deposits
GB05291/67A Expired GB1187843A (en) 1964-10-12 1967-04-04 Improvements in or relating to the Production of Micro-Cracked Chromium Plating.

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB05291/67A Expired GB1187843A (en) 1964-10-12 1967-04-04 Improvements in or relating to the Production of Micro-Cracked Chromium Plating.

Country Status (13)

Country Link
US (3) US3388049A (en)
JP (2) JPS5024248B1 (en)
AT (1) AT276893B (en)
BE (2) BE670116A (en)
BR (1) BR6788420D0 (en)
CH (1) CH445999A (en)
DE (2) DE1496974B2 (en)
ES (1) ES339183A2 (en)
FR (5) FR1447970A (en)
GB (2) GB1122795A (en)
NL (2) NL140902B (en)
OA (1) OA117E (en)
SE (2) SE327875B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471271A (en) * 1965-08-16 1969-10-07 Udylite Corp Electrodeposition of a micro-cracked corrosion resistant nickel-chromium plate
US3528894A (en) * 1966-08-25 1970-09-15 M & T Chemicals Inc Method of electrodepositing corrosion resistant coating
US3474010A (en) * 1966-10-26 1969-10-21 M & T Chemicals Inc Method of electroplating corrosion resistant coating
US3866289A (en) * 1969-10-06 1975-02-18 Oxy Metal Finishing Corp Micro-porous chromium on nickel-cobalt duplex composite plates
GB1541118A (en) * 1976-12-03 1979-02-21 Bnf Metals Tech Centre Nickel plating
JPS54119436U (en) * 1978-02-09 1979-08-21
US4416738A (en) * 1980-01-28 1983-11-22 The Boeing Company Chromium plating
US4384929A (en) * 1981-07-06 1983-05-24 Occidental Chemical Corporation Process for electro-depositing composite nickel layers
US4432843A (en) * 1982-07-29 1984-02-21 Omi International Corporation Trivalent chromium electroplating baths and processes using thiazole addition agents
JPH02116220U (en) * 1989-03-04 1990-09-18
EP0785296B1 (en) * 1995-12-29 2000-03-15 AT&T Corp. Electroplating of nickel on nickel ferrite devices
EP2975162B1 (en) * 2014-07-18 2018-09-05 FRANZ Oberflächentechnik GmbH & Co KG Method for providing a workpiece with a protective coating
US10138884B2 (en) * 2014-12-22 2018-11-27 Weatherford Technology Holdings, Llc Nickel corrosion barrier under chrome for sucker rod pumps

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678908A (en) * 1951-07-26 1954-05-18 Eastman Kodak Co Method of forming ferrotyping surfaces
DE1176956B (en) * 1958-08-27 1964-08-27 Bosch Gmbh Robert Process for the multi-stage galvanic deposition of shiny nickel coatings
GB871276A (en) * 1959-02-26 1961-06-28 Hanson Van Winkle Munning Co Improvements in electrodeposition of nickel
NL271860A (en) * 1961-11-27
NL122246C (en) * 1962-02-23
GB1091526A (en) * 1963-07-24 1967-11-15 Canning & Co Ltd W Improvements in electrodeposition of chromium
US3471271A (en) * 1965-08-16 1969-10-07 Udylite Corp Electrodeposition of a micro-cracked corrosion resistant nickel-chromium plate

Also Published As

Publication number Publication date
FR90417E (en) 1967-12-08
US3620936A (en) 1971-11-16
CH445999A (en) 1967-10-31
FR1447970A (en) 1966-08-05
GB1187843A (en) 1970-04-15
JPS4827183B1 (en) 1973-08-20
NL6513216A (en) 1966-04-13
BE696105A (en) 1967-09-01
DE1496974A1 (en) 1969-12-18
JPS5024248B1 (en) 1975-08-14
DE1621151B2 (en) 1978-03-23
OA117E (en) 1970-12-15
NL140902B (en) 1974-01-15
BR6788420D0 (en) 1973-07-10
AT276893B (en) 1969-12-10
DE1621151A1 (en) 1970-07-16
NL6704452A (en) 1967-10-16
DE1496974B2 (en) 1971-11-04
DE1621151C3 (en) 1978-11-23
BE670116A (en) 1966-01-17
SE335935B (en) 1971-06-14
FR88318E (en) 1967-01-20
FR89657E (en) 1967-07-28
SE327875B (en) 1970-08-31
ES339183A2 (en) 1968-04-16
FR89217E (en) 1967-05-26
US3388049A (en) 1968-06-11
US3759802A (en) 1973-09-18

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