GB1064295A - Improvements in or relating to electroplating - Google Patents

Improvements in or relating to electroplating

Info

Publication number
GB1064295A
GB1064295A GB35313/63A GB3531363A GB1064295A GB 1064295 A GB1064295 A GB 1064295A GB 35313/63 A GB35313/63 A GB 35313/63A GB 3531363 A GB3531363 A GB 3531363A GB 1064295 A GB1064295 A GB 1064295A
Authority
GB
United Kingdom
Prior art keywords
current density
metal
acid
hydrogen overvoltage
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.)
Expired
Application number
GB35313/63A
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 GB1064295A publication Critical patent/GB1064295A/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
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/02—Electroplating of selected surface areas
    • 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
    • Y10S204/00—Chemistry: electrical and wave energy
    • Y10S204/07—Current distribution within the bath

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)
  • Electroplating And Plating Baths Therefor (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

In electroplating a shaped article of a relatively high hydrogen overvoltage metal having because of differences in geometry or accessibility one or more regions of non-plating relatively low current density, etching is prevented in the low current density regions by coating them or placing them in intimate electrical contact with a relatively low hydrogen overvoltage metal having an overvoltage of less than 0.33 volt at a current density of 0.1 amp/dm2 as defined in (The Corrosion Handbook by H. Uhlig, John Wiley 1948). The low hydrogen overvoltage metal may be applied to the low current density areas (a) from an aqueous solution containing the metal in ionic form by spraying, brushing, contacting, dipping, wicking, electroless or electrolytic plating, or by applying a paste containing such a solution or (b) from an organic solvent solution of compounds of the metal or a foramions sheet of or coated with such a metal may be pressed against the low current density areas. Specified low hydrogen overvoltage metals are platinum, palladium, rhodium, iridium, gold, black nickel and electroless nickel and the process is described as applied to electroplating ferrous articles with chromium or nickel. In a specific example the inside of a steel pipe after vapour degreasing, anodic cleaning in alkali and acid dip brushed over with an aqueous solution containing 4 g/1 palladium chloride and 20 g/1 sodium chloride and acidified to pH 1.5 with hydrochloric acid. The pipe was then anodically cleaned in a 200 g/1 chromic acid bath at a current density of 14.4 amps/dm2 of external surface and was then cathodically plated in an aqueous chromic acid bath at approx. 58 DEG C. containing sulphuric acid and potassium silicofluoride using lead alloy anodes containing 4% tin with a cathode current density of 49 amps/dm2. The inside of the pipe was neither plated nor etched. Examples of other low hydrogen overvoltage metal solutions are aqueous solutions containing 2.5 g/1 chloroplatinic acid or 4 g/1 hydrated chloroauric acid. Pastes are also described comprising 1 to 2 g/1 rhodium chloride or 2.5 to 4 g/1 chloroiridic acid thickened with silica gel, methyl cellulose, polyvinyl alcohol, gelatine, or agar-agar.
GB35313/63A 1962-09-06 1963-09-06 Improvements in or relating to electroplating Expired GB1064295A (en)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
US22187962A 1962-09-06 1962-09-06
US29191763A 1963-07-01 1963-07-01
US29198763A 1963-07-01 1963-07-01
US29192563A 1963-07-01 1963-07-01
US29196063A 1963-07-01 1963-07-01
US291988A US3415723A (en) 1962-09-06 1963-07-01 Method of stop-off of cathode pieces in chromium plating baths
US291986A US3350287A (en) 1962-09-06 1963-07-01 Method of preventing etch on cast iron in plating baths
US72595668A 1968-05-01 1968-05-01
US75410568A 1968-08-13 1968-08-13
US78604068A 1968-12-23 1968-12-23
US82113569A 1969-05-01 1969-05-01

Publications (1)

Publication Number Publication Date
GB1064295A true GB1064295A (en) 1967-04-05

Family

ID=27582736

Family Applications (7)

Application Number Title Priority Date Filing Date
GB35313/63A Expired GB1064295A (en) 1962-09-06 1963-09-06 Improvements in or relating to electroplating
GB10695/64A Expired GB1063781A (en) 1962-09-06 1964-03-13 Improvements in or relating to electroplating
GB10697/64A Expired GB1064443A (en) 1962-09-06 1964-03-13 Improvements in or relating to electroplating
GB10696/64A Expired GB1063503A (en) 1962-09-06 1964-03-13 Improvements in or relating to electroplating on cast iron
GB10693/64A Expired GB1064296A (en) 1962-09-06 1964-03-13 Improvements in or relating to electroplating
GB10694/64A Expired GB1064297A (en) 1962-09-06 1964-03-13 Improvements in or relating to electroplating onto steel or iron
GB10698/64A Expired GB1063782A (en) 1962-09-06 1964-03-13 Improvements in or relating to electroplating

Family Applications After (6)

Application Number Title Priority Date Filing Date
GB10695/64A Expired GB1063781A (en) 1962-09-06 1964-03-13 Improvements in or relating to electroplating
GB10697/64A Expired GB1064443A (en) 1962-09-06 1964-03-13 Improvements in or relating to electroplating
GB10696/64A Expired GB1063503A (en) 1962-09-06 1964-03-13 Improvements in or relating to electroplating on cast iron
GB10693/64A Expired GB1064296A (en) 1962-09-06 1964-03-13 Improvements in or relating to electroplating
GB10694/64A Expired GB1064297A (en) 1962-09-06 1964-03-13 Improvements in or relating to electroplating onto steel or iron
GB10698/64A Expired GB1063782A (en) 1962-09-06 1964-03-13 Improvements in or relating to electroplating

Country Status (7)

Country Link
US (6) US3415723A (en)
JP (1) JPS4820971B1 (en)
CH (5) CH479716A (en)
DE (2) DE1496894A1 (en)
GB (7) GB1064295A (en)
NL (1) NL297569A (en)
SE (2) SE339153B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2351089A (en) * 1999-06-15 2000-12-20 Hong Kong Productivity Council Platinum electroforming/electroplating using haloplatinics
US20160333480A1 (en) * 2015-05-13 2016-11-17 Dan Porodo Metallic alloy coating system and method

Families Citing this family (27)

* 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
US3525676A (en) * 1967-12-20 1970-08-25 M & T Chemicals Inc Corrosion inhibition
US3970537A (en) * 1973-07-11 1976-07-20 Inland Steel Company Electrolytic treating apparatus
US3901771A (en) * 1973-07-11 1975-08-26 Inland Steel Co One-side electrocoating
US3880725A (en) * 1974-04-10 1975-04-29 Rca Corp Predetermined thickness profiles through electroplating
US3959099A (en) * 1975-06-18 1976-05-25 Inland Steel Company Electrolytic method of producing one-side-only coated steel
US4043891A (en) * 1976-01-14 1977-08-23 Bell Telephone Laboratories, Incorporated Electrolytic cell with bipolar electrodes
JPS5321048A (en) * 1976-08-10 1978-02-27 Nippon Electric Co Constant current density plating device
US4071429A (en) * 1976-12-29 1978-01-31 Monsanto Company Electrolytic flow-cell apparatus and process for effecting sequential electrochemical reaction
US4292159A (en) * 1977-11-21 1981-09-29 Olin Corporation Cell having in situ reduction of electrode overvoltage
US4378281A (en) * 1981-06-25 1983-03-29 Napco, Inc. High speed plating of flat planar workpieces
US4378282A (en) * 1981-06-25 1983-03-29 Napco, Inc. High speed plating of flat planar workpieces
US4545873A (en) * 1982-01-19 1985-10-08 Ciba-Geigy Ag Vessel for an unstable solution of a metal salt or complex and method for sealing such vessel
US5122256A (en) * 1991-05-24 1992-06-16 Waskiewicz Walter P Method for selectively coating surfaces of components
US5173170A (en) * 1991-06-03 1992-12-22 Eco-Tec Limited Process for electroplating metals
DE4442792A1 (en) * 1994-12-01 1996-06-05 Teves Gmbh Alfred Process for the production of a corrosion and wear protective oxide layer with a locally reduced layer thickness on the metal surface of a workpiece
US6090260A (en) * 1997-03-31 2000-07-18 Tdk Corporation Electroplating method
US6071388A (en) * 1998-05-29 2000-06-06 International Business Machines Corporation Electroplating workpiece fixture having liquid gap spacer
US6039858A (en) * 1998-07-22 2000-03-21 International Business Machines Corporation Plating process for x-ray mask fabrication
US6197664B1 (en) 1999-01-12 2001-03-06 Fujitsu Limited Method for electroplating vias or through holes in substrates having conductors on both sides
US6193860B1 (en) * 1999-04-23 2001-02-27 Vlsi Technolgy, Inc. Method and apparatus for improved copper plating uniformity on a semiconductor wafer using optimized electrical currents
GB2383337A (en) * 2001-12-21 2003-06-25 Accentus Plc Electroplating plant and method
US6923252B2 (en) * 2003-04-17 2005-08-02 The Regents Of The University Of California Borehole sounding device with sealed depth and water level sensors
US20080169199A1 (en) * 2007-01-17 2008-07-17 Chang Gung University Trivalent chromium electroplating solution and an electroplating process with the solution
US20090211914A1 (en) * 2008-02-21 2009-08-27 Ching-An Huang Trivalent Chromium Electroplating Solution and an Operational Method Thereof
CN103088373A (en) * 2011-10-31 2013-05-08 肖云捷 Effective method for preventing scorching in electroplating process
CN103122470B (en) * 2011-11-17 2015-12-09 符士正 Automobile cast iron die plating solution

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US485343A (en) * 1892-11-01 Method of and apparatus for electro-deposition of metals
US499726A (en) * 1893-06-20 Production of alloys by electro-deposition
US2031185A (en) * 1936-02-18 Positive screen image
US644029A (en) * 1899-08-28 1900-02-20 Sherard O Cowper-Coles Process of electrodeposition of metals.
US1055327A (en) * 1908-11-27 1913-03-11 Carl Hering Means for preventing corrosion of underground metallic structures.
GB191325393A (en) * 1913-11-06 1914-06-11 Sherard Osborn Cowper-Coles An Improved Process for Obtaining Adhesive Coatings of Copper upon Iron and Steel.
US1465034A (en) * 1921-11-03 1923-08-14 Frank L Antisell Process for the electrolytic deposition of copper
US1750418A (en) * 1928-12-05 1930-03-11 Wadsworth Watch Case Co Etching and decorating metal surfaces
US2044431A (en) * 1932-03-05 1936-06-16 Anaconda Copper Mining Co Method of electroplating metal
GB401933A (en) * 1933-02-21 1933-11-23 Henderik Van Der Horst A new or improved method of providing a hard wearing surface in the cylinder bores of internal combustion engines
US2367314A (en) * 1941-06-24 1945-01-16 Western Electric Co Electrolytic method of coating localized areas of articles
DE924180C (en) * 1942-07-03 1955-02-28 Messerschmitt Boelkow Blohm Device for removing contaminants that have accumulated on valve cones, especially on exhaust valves of internal combustion engines, during operation
US2422242A (en) * 1943-07-16 1947-06-17 Wright Aeronautical Corp Electroplating fixture
US2508523A (en) * 1946-09-11 1950-05-23 Krebs & Co Device for the protection of the cathodes of electrolytic cells
DE1013938B (en) * 1954-05-22 1957-08-14 Schoch Hartchrom G M B H Geb Method and device for the galvanic deposition of metal coatings, in particular for hard chrome plating
US2784151A (en) * 1955-03-25 1957-03-05 Tiarco Corp Electrodeposition
US3014851A (en) * 1959-06-05 1961-12-26 Savage Plating & Anodizing Co Process for plating a selective surface within a groove
US3041257A (en) * 1960-08-25 1962-06-26 Westinghouse Electric Corp Chromium electroplating
FR1288919A (en) * 1961-02-17 1962-03-30 Coussinets Ste Indle Single-sided electroplating process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2351089A (en) * 1999-06-15 2000-12-20 Hong Kong Productivity Council Platinum electroforming/electroplating using haloplatinics
GB2351089B (en) * 1999-06-15 2001-04-18 Hong Kong Productivity Council Platinum electroforming/electroplating bath and method
US20160333480A1 (en) * 2015-05-13 2016-11-17 Dan Porodo Metallic alloy coating system and method
US9752232B2 (en) * 2015-05-13 2017-09-05 Dan Porodo Method of electrolessly plating nickel on tubulars

Also Published As

Publication number Publication date
CH477562A (en) 1969-08-31
US3350287A (en) 1967-10-31
DE1496895A1 (en) 1969-09-18
SE339153B (en) 1971-09-27
DE1496894A1 (en) 1969-08-14
GB1063781A (en) 1967-03-30
NL297569A (en)
GB1064297A (en) 1967-04-05
GB1064443A (en) 1967-04-05
SE310970B (en) 1969-05-19
CH493644A (en) 1970-07-15
CH467868A (en) 1969-01-31
JPS4820971B1 (en) 1973-06-25
US3477920A (en) 1969-11-11
US3415723A (en) 1968-12-10
US3511758A (en) 1970-05-12
US3573175A (en) 1971-03-30
US3702809A (en) 1972-11-14
GB1063782A (en) 1967-03-30
GB1064296A (en) 1967-04-05
CH477561A (en) 1969-08-31
CH479716A (en) 1969-10-15
GB1063503A (en) 1967-03-30

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