EP0235173A1 - Procede de formation d'electrodepositions de chrome adherent a partir d'un bain efficace a haute energie - Google Patents

Procede de formation d'electrodepositions de chrome adherent a partir d'un bain efficace a haute energie

Info

Publication number
EP0235173A1
EP0235173A1 EP86904565A EP86904565A EP0235173A1 EP 0235173 A1 EP0235173 A1 EP 0235173A1 EP 86904565 A EP86904565 A EP 86904565A EP 86904565 A EP86904565 A EP 86904565A EP 0235173 A1 EP0235173 A1 EP 0235173A1
Authority
EP
European Patent Office
Prior art keywords
solution
chromium
substrate
activation
ion
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Withdrawn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
EP86904565A
Other languages
German (de)
English (en)
Other versions
EP0235173A4 (fr
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 EP0235173A4 publication Critical patent/EP0235173A4/fr
Publication of EP0235173A1 publication Critical patent/EP0235173A1/fr
Withdrawn legal-status Critical Current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

L'utilisation de procédés de chromage de grande efficacité a été contrariée par l'incapacité d'obtenir une bonne adhésion du revêtement. L'invention concerne un procédé d'électrodéposition de chrome sur un substrat métallique tel qu'un métal ferreux, de l'acier inox ou de la fonte, lequel comprend l'étape d'activation du substrat par attaque électrolytique dans une solution d'activation. La solution d'activation est choisie parmi a) une solution sensiblement neutre b) un mélange d'acide sulfurique avec addition d'ion sulfate et un agent d'oxydation inorganique, c) un mélange d'acide chromique et d'ions chlorure ou d) une solution de polarisation d'oxydation anodique. L'utilisation d'une telle solution d'activation résout les problèmes d'adhésion rencontrés jusqu'à présent.
EP86904565A 1985-08-09 1986-06-24 Procede de formation d'electrodepositions de chrome adherent a partir d'un bain efficace a haute energie Withdrawn EP0235173A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US764273 1985-08-09
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
US780469 1985-09-26
US787403 1985-10-15
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
US816180 1986-01-06
US06/816,180 US4717456A (en) 1986-01-06 1986-01-06 Two-step electrolytic activation process for chromium electrodeposition

Publications (2)

Publication Number Publication Date
EP0235173A4 EP0235173A4 (fr) 1987-07-13
EP0235173A1 true EP0235173A1 (fr) 1987-09-09

Family

ID=27505697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86904565A Withdrawn EP0235173A1 (fr) 1985-08-09 1986-06-24 Procede de formation d'electrodepositions de chrome adherent a partir d'un bain efficace a haute energie

Country Status (9)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102216536B (zh) * 2008-09-26 2014-05-07 科勒公司 具有抵抗性涂层的不锈钢卫生洁具

Families Citing this family (4)

* 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
US20200032412A1 (en) * 2018-07-25 2020-01-30 The Boeing Company Compositions and Methods for Activating Titanium Substrates
CN113737239A (zh) * 2021-08-30 2021-12-03 凯瑞电子(诸城)有限公司 一种防止压力传感器金属外壳氧化的液体配方及处理工艺

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 (fr) * 1971-07-27 1973-01-26 Bayer Rickmann Gmbh Procede de traitement prealable de toles d'acier pour l'emaillage en une couche apres formage
US3726773A (en) * 1971-08-02 1973-04-10 Us Army Surface preparation of maraging steel for electroplating
DE2500730C3 (de) * 1975-01-10 1980-04-24 Bergische Metallwarenfabrik Dillenberg & Co Kg, 5601 Gruiten Galvanisches Chrombad
IT1047584B (it) * 1975-09-26 1980-10-20 Centro Speriment Metallurg Metodo per migliorare la suscetti bilita dell acciaio ai rivestimenti
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 (ja) * 1981-08-20 1985-12-16 住友金属工業株式会社 耐焼付性に優れた油井管継手およびその製造方法
US4472249A (en) * 1981-08-24 1984-09-18 M&T Chemicals Inc. Bright chromium plating baths and process
ATE33686T1 (de) * 1982-02-09 1988-05-15 Ibm Elektrolytische abscheidung von chrom und seinen legierungen.
US4450050A (en) * 1983-02-03 1984-05-22 M&T Chemicals Inc. Process for bonding high efficiency chromium electrodeposits

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No relevant documents have been disclosed. *
See also references of WO8700869A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102216536B (zh) * 2008-09-26 2014-05-07 科勒公司 具有抵抗性涂层的不锈钢卫生洁具

Also Published As

Publication number Publication date
DK166887A (da) 1987-04-01
IL79641A0 (en) 1986-11-30
GR862069B (en) 1986-12-24
PT83165A (en) 1986-09-01
AU6127486A (en) 1987-03-05
BR8606816A (pt) 1987-10-13
EP0235173A4 (fr) 1987-07-13
DK166887D0 (da) 1987-04-01
ES2000386A6 (es) 1988-02-16
WO1987000869A1 (fr) 1987-02-12
PT83165B (en) 1988-01-04

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19870330

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19881231

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KORBACH, WILLIAM, C.

Inventor name: MCMULLEN, WARREN, H.

Inventor name: JONES, ALLEN, R.

Inventor name: CHESSIN, HYMAN