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ES2000386A6 - Process for forming adherent chromium electrodeposits from a high energy efficient bath. - Google Patents

Process for forming adherent chromium electrodeposits from a high energy efficient bath.

Info

Publication number
ES2000386A6
ES2000386A6 ES8600893A ES8600893A ES2000386A6 ES 2000386 A6 ES2000386 A6 ES 2000386A6 ES 8600893 A ES8600893 A ES 8600893A ES 8600893 A ES8600893 A ES 8600893A ES 2000386 A6 ES2000386 A6 ES 2000386A6
Authority
ES
Spain
Prior art keywords
activating
solution
high energy
energy efficient
mixture
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
ES8600893A
Other languages
Spanish (es)
Inventor
Hyman Chessin
Warren H Mcmullen
Allen R Jones
William C Korbach
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
Priority claimed from US06/764,273 external-priority patent/US4585530A/en
Priority claimed from US06/780,469 external-priority patent/US4668348A/en
Priority claimed from US06/787,403 external-priority patent/US4664759A/en
Priority claimed from US06/816,180 external-priority patent/US4717456A/en
Application filed by M&T Chemicals Inc filed Critical M&T Chemicals Inc
Publication of ES2000386A6 publication Critical patent/ES2000386A6/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
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

The use of high efficiency chromium plating processes has been hampered by the inability to obtain adequate coating adhesion. The invention relates to a method of electrodepositing chromium on a metal substrate such as ferrous metal, stainless steel or cast iron which includes the step of activating the substrate by electrolytically etching in an activating solution. The activating solution is selected from a) a substantially neutral solution, b) a mixture of sulfuric acid, added sulfate ion and an inorganic oxidizing agent c) a mixture of chromic acid and chloride ion or d) an anodic oxidizing polarizing solution. It has been found that the use of such activating solutions overcomes the previously encountered adhesion problems.
ES8600893A 1985-08-09 1986-08-06 Process for forming adherent chromium electrodeposits from a high energy efficient bath. Expired ES2000386A6 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US06/764,273 US4585530A (en) 1985-08-09 1985-08-09 Process for forming adherent chromium electrodeposits from high energy efficient bath on ferrous metal substrates
US06/780,469 US4668348A (en) 1985-09-26 1985-09-26 Method for forming adherent, bright, smooth and hard chromium electrodeposits on ferrous metal substrates from high energy efficient chromium baths
US06/787,403 US4664759A (en) 1985-10-15 1985-10-15 Method for forming adherent, bright, smooth and hard chromium electrodeposits on stainless steel substrates from high energy efficient chromium baths
US06/816,180 US4717456A (en) 1986-01-06 1986-01-06 Two-step electrolytic activation process for chromium electrodeposition

Publications (1)

Publication Number Publication Date
ES2000386A6 true ES2000386A6 (en) 1988-02-16

Family

ID=27505697

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8600893A Expired ES2000386A6 (en) 1985-08-09 1986-08-06 Process for forming adherent chromium electrodeposits from a high energy efficient bath.

Country Status (9)

Country Link
EP (1) EP0235173A1 (en)
AU (1) AU6127486A (en)
BR (1) BR8606816A (en)
DK (1) DK166887D0 (en)
ES (1) ES2000386A6 (en)
GR (1) GR862069B (en)
IL (1) IL79641A0 (en)
PT (1) PT83165B (en)
WO (1) WO1987000869A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5041138A (en) * 1986-11-20 1991-08-20 Massachusetts Institute Of Technology Neomorphogenesis of cartilage in vivo from cell culture
US5741685A (en) * 1995-06-07 1998-04-21 Children's Medical Center Corporation Parenchymal cells packaged in immunoprotective tissue for implantation
US8763173B2 (en) * 2008-09-26 2014-07-01 Kohler Co. Stainless steel plumbing fixtures with resistant coatings
US20200032412A1 (en) * 2018-07-25 2020-01-30 The Boeing Company Compositions and Methods for Activating Titanium Substrates
CN113737239A (en) * 2021-08-30 2021-12-03 凯瑞电子(诸城)有限公司 Liquid formula for preventing pressure sensor metal shell from being oxidized and treatment process

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915444A (en) * 1955-12-09 1959-12-01 Enthone Process for cleaning and plating ferrous metals
US3694326A (en) * 1969-11-03 1972-09-26 Allegheny Ludlum Steel Pretreatment of stainless steel for electroplating
BE786737A (en) * 1971-07-27 1973-01-26 Bayer Rickmann Gmbh PRE-TREATMENT PROCESS OF STEEL SHEETS FOR ONE-LAYER ENAMELING AFTER FORMING
US3726773A (en) * 1971-08-02 1973-04-10 Us Army Surface preparation of maraging steel for electroplating
DE2500730C3 (en) * 1975-01-10 1980-04-24 Bergische Metallwarenfabrik Dillenberg & Co Kg, 5601 Gruiten Galvanic chrome bath
IT1047584B (en) * 1975-09-26 1980-10-20 Centro Speriment Metallurg METHOD FOR IMPROVING THE SUSCETTI BILITA OF STEEL TO COATINGS
US4234396A (en) * 1978-03-08 1980-11-18 Mark Perakh Chromium plating
US4412892A (en) * 1981-07-13 1983-11-01 The United States Of America As Represented By The Secretary Of The Army Pretreatment of superalloys and stainless steels for electroplating
JPS6057519B2 (en) * 1981-08-20 1985-12-16 住友金属工業株式会社 Oil country tubular joint with excellent seizure resistance and its manufacturing method
US4472249A (en) * 1981-08-24 1984-09-18 M&T Chemicals Inc. Bright chromium plating baths and process
EP0085771B1 (en) * 1982-02-09 1988-04-20 International Business Machines Corporation Electrodeposition of chromium and its alloys
US4450050A (en) * 1983-02-03 1984-05-22 M&T Chemicals Inc. Process for bonding high efficiency chromium electrodeposits

Also Published As

Publication number Publication date
IL79641A0 (en) 1986-11-30
PT83165A (en) 1986-09-01
WO1987000869A1 (en) 1987-02-12
DK166887A (en) 1987-04-01
EP0235173A4 (en) 1987-07-13
GR862069B (en) 1986-12-24
EP0235173A1 (en) 1987-09-09
PT83165B (en) 1988-01-04
BR8606816A (en) 1987-10-13
DK166887D0 (en) 1987-04-01
AU6127486A (en) 1987-03-05

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20000202