BR8901046A - ELECTROCHEMICAL PROCESS FOR PERFORMING CHROME, NICKEL AND OTHER ANALOG METALS - Google Patents

ELECTROCHEMICAL PROCESS FOR PERFORMING CHROME, NICKEL AND OTHER ANALOG METALS

Info

Publication number
BR8901046A
BR8901046A BR898901046A BR8901046A BR8901046A BR 8901046 A BR8901046 A BR 8901046A BR 898901046 A BR898901046 A BR 898901046A BR 8901046 A BR8901046 A BR 8901046A BR 8901046 A BR8901046 A BR 8901046A
Authority
BR
Brazil
Prior art keywords
layer
nickel
metals
electrochemical process
chromium
Prior art date
Application number
BR898901046A
Other languages
Portuguese (pt)
Inventor
Luigi Blesio
Mario Leoni
Original Assignee
Tecnovolt Ind E Comercio Ltda
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 Tecnovolt Ind E Comercio Ltda filed Critical Tecnovolt Ind E Comercio Ltda
Publication of BR8901046A publication Critical patent/BR8901046A/en

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
    • 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
    • C25D5/18—Electroplating using modulated, pulsed or reversing current

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Secondary Cells (AREA)

Abstract

Electrochemical process for producing platings of such metals as chromium, nickel and the like, consisting in depositing on the support to be plated at least a first layer of plating metal such as chromium, nickel and the like, by using a current rectifier equipped with an electronic device for the periodic and adjustable reversal of polarity, in such a way as to obtain said first layers with no cracks, then in subsequently depositing on said first layer at least a second layer by using the only positive polarity obtainable from said rectifier, so as to endow said second layer with the required values of hardness and elasticity. Equipment for carrying out such a process, which consists in a generator of double-level pulsating electrical waves, comprising means for independently adjusting the time intervals between two consecutive negative pulses and the duration time and amplitude of the negative waves.
BR898901046A 1988-03-04 1989-03-02 ELECTROCHEMICAL PROCESS FOR PERFORMING CHROME, NICKEL AND OTHER ANALOG METALS BR8901046A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8819644A IT1215985B (en) 1988-03-04 1988-03-04 ELECTROCHEMICAL PROCEDURE FOR THE CONSTRUCTION OF CHROME AND METAL COATINGS SIMILAR BY PERIODIC REVERSAL POLARITY BUTTON CURRENT

Publications (1)

Publication Number Publication Date
BR8901046A true BR8901046A (en) 1989-10-24

Family

ID=11160040

Family Applications (1)

Application Number Title Priority Date Filing Date
BR898901046A BR8901046A (en) 1988-03-04 1989-03-02 ELECTROCHEMICAL PROCESS FOR PERFORMING CHROME, NICKEL AND OTHER ANALOG METALS

Country Status (5)

Country Link
EP (1) EP0330722B1 (en)
AT (1) ATE72587T1 (en)
BR (1) BR8901046A (en)
DE (1) DE3868400D1 (en)
IT (1) IT1215985B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3933896C1 (en) * 1989-10-11 1990-10-11 Lpw-Chemie Gmbh, 4040 Neuss, De
US5326448A (en) * 1992-10-15 1994-07-05 Telectronics Pacing Systems, Inc. Method for reducing the polarization of bioelectrical stimulation leads using surface enhancement, and product made thereby
DE19745811C2 (en) * 1997-10-16 2002-06-13 Federal Mogul Burscheid Gmbh Electroplated hard chrome layer, use and method for the production thereof
JP2000017482A (en) 1998-06-26 2000-01-18 Nippon Piston Ring Co Ltd Laminated chromium plating film excellent in wear resistance and fatigue strength
RU2014115534A (en) * 2011-10-10 2015-11-20 Зумлион Хеви Индастри Сайенс Энд Текнолоджи Ко., Лтд. FEEDING CYLINDER, METHOD FOR PRODUCING THE FEEDING CYLINDER AND PUMPING EQUIPMENT HAVING A FEEDING CYLINDER
CN102330127B (en) * 2011-10-10 2012-12-05 中联重科股份有限公司 Conveying tank and manufacturing method thereof, and pumping equipment with conveying tank
EP3368706A4 (en) 2015-10-27 2019-05-01 Métal Protection Lenoli Inc. Electrolytic process and apparatus for the surface treatment of non-ferrous metals
US10457405B1 (en) 2018-04-24 2019-10-29 Triumph Aerostructures, Llc. Composite aerostructure with integrated heating element
BR122023020216A2 (en) 2018-05-03 2024-01-16 Qarbon Aerospace (Foundation), Llc AEROSTRUCTURE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975254A (en) * 1974-08-13 1976-08-17 Westinghouse Electric Corporation Forward-reverse pulse cycling anodizing and electroplating process power supply
US4092226A (en) * 1974-12-11 1978-05-30 Nikolaus Laing Process for the treatment of metal surfaces by electro-deposition of metal coatings at high current densities
CH629542A5 (en) * 1976-09-01 1982-04-30 Inoue Japax Res METHOD AND DEVICE FOR GALVANIC MATERIAL DEPOSITION.
US4666567A (en) * 1981-07-31 1987-05-19 The Boeing Company Automated alternating polarity pulse electrolytic processing of electrically conductive substances

Also Published As

Publication number Publication date
EP0330722A1 (en) 1989-09-06
ATE72587T1 (en) 1992-02-15
IT8819644A0 (en) 1988-03-04
IT1215985B (en) 1990-02-22
EP0330722B1 (en) 1992-02-12
DE3868400D1 (en) 1992-03-26

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Legal Events

Date Code Title Description
FD3 Appl. lapsed due to non-payment of renewal fee