GB1482747A - Chromium plating baths - Google Patents

Chromium plating baths

Info

Publication number
GB1482747A
GB1482747A GB47424/73A GB4742473A GB1482747A GB 1482747 A GB1482747 A GB 1482747A GB 47424/73 A GB47424/73 A GB 47424/73A GB 4742473 A GB4742473 A GB 4742473A GB 1482747 A GB1482747 A GB 1482747A
Authority
GB
United Kingdom
Prior art keywords
bath
molar
sulphate
ions
halide
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
GB47424/73A
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.)
BNF Metals Technology Centre
Original Assignee
BNF Metals Technology Centre
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 BNF Metals Technology Centre filed Critical BNF Metals Technology Centre
Priority to GB47424/73A priority Critical patent/GB1482747A/en
Priority to US508866A priority patent/US3917517A/en
Priority to SE7412152A priority patent/SE7412152L/xx
Priority to CA210,384A priority patent/CA1030094A/en
Priority to AU73838/74A priority patent/AU489015B2/en
Priority to DE19742447897 priority patent/DE2447897A1/en
Priority to BE149297A priority patent/BE820802A/en
Priority to FR7433798A priority patent/FR2247550B1/fr
Priority to NL7413211A priority patent/NL7413211A/en
Priority to IT70014/74A priority patent/IT1020962B/en
Priority to JP49116813A priority patent/JPS5742713B2/ja
Publication of GB1482747A publication Critical patent/GB1482747A/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
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium
    • C25D3/06—Electroplating: Baths therefor from solutions of chromium from solutions of trivalent chromium

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

1482747 Chromium electro-plating BNF METALS TECHNOLOGY CENTRE 10 Oct 1974 [10 Oct 1973] 47424/73 Heading C7B An aqueous Cr electro-plating bath contains trivalent Cr ions e.g. 0À1 to 2 molar, and at least 0À08 e.g. 0À2 to 2 molar H 2 PO 2 ions. Preferably the molar ratio of trivalent Cr to H 2 PO 2 is 0À4 to 1À7. The source of Cr ions may be chromic halide preferably chloride and/or sulphate, or P oxy acid salt, organic acid salt or complex with other anions, or formed in situ by action of HCl, H 2 SO 4 or H 3 PO 4 on Cr, its oxide, Cr 2 O 3 , or hydroxide or reduction of CrO 3 by H 2 O 2 . The source of H 2 PO 2 ion may be NaH 2 PO 2 , H 2 O or hypophosphorous acid. With CrCl 3 , an organic buffer, e.g. 10 to 25% by volume dimethylformamide, may be added to the bath. The bath may also contain at least 0À2 molar ammonium ions e.g. added as halide or sulphate; 0À5 to 1 molar boric acid, borate or fluoborate; 5 to 50 ppm of a cationic, anionic, non- ionic or amphoteric surfactant, e.g. cetyl trimethylammonium bromide, substituted imidazolines, Na lauryl sulphate, sulphonated castor oils, higher fatty alcohols, ethers, epoxides and amino acids; di-n-pentyl or butyl phthalate, for alloys, in saturated solution; 0À02 to 2À5 molar Fe and/or 0À02 to 1À0 molar Ni. Other ions present in the bath may be NO 3 , NO 2 , F, Br, I, alkali metal e.g. Na or alkali earth metal, e.g. Ca. The pH may be adjusted e.g. to 1À5 - 4À0 by acid, NaOH or NH 3 addition. For hard deposits the bath preferably contains Al 2 O 3 , Y 2 O 3 , ZrB 2 , MoS 2 or WC particles of maximum average diameter 5 microns or whiskers 300 to 600 microns long and up to 100 microns diameter. The anode is preferably of magnetite, coated steel, Pt or platinized Ti for a sulphate bath, or of carbon e.g. graphite for halide or mixed halide/sulphate bath; or may be of Cr or corresponding Cr-Fe and/or Ni alloy. Prior to electro-plating with Cr, particularly overbrightened Ni layers, the substrate may be cathodically treated in NaCn solution and rinsing. The substrate may be of Fe, steel, Ni, Cu, Zn, Al or brass.
GB47424/73A 1973-10-10 1973-10-10 Chromium plating baths Expired GB1482747A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
GB47424/73A GB1482747A (en) 1973-10-10 1973-10-10 Chromium plating baths
US508866A US3917517A (en) 1973-10-10 1974-09-24 Chromium plating electrolyte and method
SE7412152A SE7412152L (en) 1973-10-10 1974-09-26
CA210,384A CA1030094A (en) 1973-10-10 1974-09-30 Chromium plating electrolyte
AU73838/74A AU489015B2 (en) 1973-10-10 1974-10-01 Chromium plating electrolyte and method
DE19742447897 DE2447897A1 (en) 1973-10-10 1974-10-08 CHROME-CONTAINING GALVANIC BAEDER
BE149297A BE820802A (en) 1973-10-10 1974-10-08 ELECTROLYTIC SOLUTION FOR THE ELECTROLYTIC DEPOSIT OF CHROME ON A SUBSTRATE AND METHOD
FR7433798A FR2247550B1 (en) 1973-10-10 1974-10-08
NL7413211A NL7413211A (en) 1973-10-10 1974-10-08 METHODS FOR ELECTROLYTIC DEPOSITION OF M ON A SUBSTRATE AND ELECTROLYTIC SOLUTION EAR.
IT70014/74A IT1020962B (en) 1973-10-10 1974-10-09 ELECTROLYTIC CHROMING BATH
JP49116813A JPS5742713B2 (en) 1973-10-10 1974-10-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB47424/73A GB1482747A (en) 1973-10-10 1973-10-10 Chromium plating baths

Publications (1)

Publication Number Publication Date
GB1482747A true GB1482747A (en) 1977-08-10

Family

ID=10444924

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47424/73A Expired GB1482747A (en) 1973-10-10 1973-10-10 Chromium plating baths

Country Status (10)

Country Link
US (1) US3917517A (en)
JP (1) JPS5742713B2 (en)
BE (1) BE820802A (en)
CA (1) CA1030094A (en)
DE (1) DE2447897A1 (en)
FR (1) FR2247550B1 (en)
GB (1) GB1482747A (en)
IT (1) IT1020962B (en)
NL (1) NL7413211A (en)
SE (1) SE7412152L (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157945A (en) * 1977-03-04 1979-06-12 International Lead Zinc Research Organization, Inc. Trivalent chromium plating baths
GB2163779A (en) * 1984-08-27 1986-03-05 Nippon Kokan Kk Cr-alloy plating bath
WO2017042438A1 (en) 2015-09-09 2017-03-16 Savroc Ltd Chromium-based coating, a method for producing a chromium-based coating and a coated object
WO2022229175A1 (en) * 2021-04-27 2022-11-03 Vdeh-Betriebsforschungsinstitut Gmbh Device and method for coating a component or semi-finished product with a chromium layer
CN115485420A (en) * 2020-04-23 2022-12-16 萨夫罗克有限公司 Aqueous electroplating bath and use thereof

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4107004A (en) * 1975-03-26 1978-08-15 International Lead Zinc Research Organization, Inc. Trivalent chromium electroplating baths and method
GB1498533A (en) * 1975-03-26 1978-01-18 Bnf Metals Tech Centre Trivalent chromium plating baths
GB1596995A (en) * 1977-06-14 1981-09-03 Ibm Electroplating chromium and its alloys
GB1591051A (en) * 1977-01-26 1981-06-10 Ibm Electroplating chromium and its alloys
AU513298B2 (en) * 1978-06-02 1980-11-27 International Lead Zinc Research Organization Inc. Electrodeposition of black chromium
FR2474538A1 (en) * 1980-01-28 1981-07-31 Tardy Rene METHOD FOR ELECTROLYTIC DEPOSITION OF CHROME USING A TRIVALENT CHROME BATH
EP0073221B1 (en) * 1981-03-09 1986-01-29 Battelle Development Corporation High-rate chromium alloy plating
GB8409073D0 (en) * 1984-04-07 1984-05-16 Inter Metals & Minerals Sa Electrodeposition of chromium &c
US4615773A (en) * 1984-05-07 1986-10-07 State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Portland State University Chromium-iron alloy plating from a solution containing both hexavalent and trivalent chromium
US4569699A (en) * 1985-05-08 1986-02-11 The Dow Chemical Company Method for providing a corrosion resistant coating for magnesium containing materials
US4892628A (en) * 1989-04-14 1990-01-09 The United States Department Of Energy Electrodeposition of amorphous ternary nickel-chromium-phosphorus alloy
US5413646A (en) * 1991-02-08 1995-05-09 Blount, Inc. Heat-treatable chromium
US5194100A (en) * 1991-02-08 1993-03-16 Blount, Inc. Heat treatable chromium
FR2726289B1 (en) * 1994-10-28 1997-03-28 Floquet Monopole PROCESS FOR ELECTRODEPOSITION OF A CHROME COATING COMPRISING SOLID INCLUSIONS AND BATH IMPLEMENTED IN THIS PROCESS
FR2885370B1 (en) * 2005-05-03 2007-09-28 Commissariat Energie Atomique ELECTROCHEMICAL DEPOSITION METHOD, ALPHA AND X RAY SOURCE, MANUFACTURED THEREBY, AND PIXE-XRF ANALYSIS DEVICE USING THE SOURCE
DE102006025847A1 (en) * 2006-06-02 2007-12-06 Merck Patent Gmbh Use of phosphinic acid in electroplating
BRPI0924283B1 (en) * 2009-02-13 2019-11-12 Atotech Deutschland Gmbh chrome part and method of manufacturing it
AT510422B1 (en) * 2010-11-04 2012-04-15 Univ Wien Tech METHOD FOR THE DEPOSITION OF HARTCHROM FROM CR (VI) - FREE ELECTROLYTES
CN102041529B (en) * 2011-01-12 2012-07-04 山东轻工业学院 Method for preparing nichrome composite coating in environment-friendly trivalent chromium plating solution
CN102383150B (en) * 2011-11-09 2014-08-20 广东达志环保科技股份有限公司 High-corrosion-resistance environmentally-friendly trivalent chromium electroplating solution and electroplating method thereof
CN102352521B (en) * 2011-11-09 2015-03-11 广东达志环保科技股份有限公司 Environment-friendly barrel-plating type trivalent chromium plating solution and barrel-plating method thereof
US20160116446A1 (en) * 2013-04-26 2016-04-28 Sumitomo Electric Industries, Ltd. Analysis method for organic substances in solution to be examined
WO2015088859A2 (en) 2013-12-10 2015-06-18 Lei Chen Electrodeposited nickel-chromium alloy
EP3080338B1 (en) 2013-12-10 2018-10-03 Lei Chen Nickel-chromium-aluminum composite by electrodeposition
US10378118B2 (en) 2013-12-11 2019-08-13 United Technologies Corporation Electroformed nickel-chromium alloy
KR101666797B1 (en) * 2014-12-24 2016-10-17 주식회사 포스코 Fe-P-Cr ALLOY SHEET AND METHOD OF MANUFACTURING THE SAME
EP3744874A1 (en) * 2019-05-29 2020-12-02 Coventya SAS Electroplated product with corrosion-resistant coating
US20210017659A1 (en) * 2019-07-18 2021-01-21 The Boeing Company Functional chromium alloy plating from trivalent chromium electrolytes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927066A (en) * 1955-12-30 1960-03-01 Glenn R Schaer Chromium alloy plating
US2829059A (en) * 1956-01-26 1958-04-01 Sylvania Electric Prod Electroless chromium plating
FR1269042A (en) * 1960-10-06 1961-08-04 Du Pont Divalent chromium salt for metal deposition

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157945A (en) * 1977-03-04 1979-06-12 International Lead Zinc Research Organization, Inc. Trivalent chromium plating baths
GB2163779A (en) * 1984-08-27 1986-03-05 Nippon Kokan Kk Cr-alloy plating bath
WO2017042438A1 (en) 2015-09-09 2017-03-16 Savroc Ltd Chromium-based coating, a method for producing a chromium-based coating and a coated object
WO2017042420A1 (en) * 2015-09-09 2017-03-16 Savroc Ltd Chromium-based coating, a method for producing a chromium-based coating and a coated object
EA035042B1 (en) * 2015-09-09 2020-04-21 Саврок Лтд Chromium-based coating, method for producing a chromium-based coating and coated object
US11371156B2 (en) 2015-09-09 2022-06-28 Savroc Ltd Chromium-based coating, a method for producing a chromium-based coating and a coated object
CN115485420A (en) * 2020-04-23 2022-12-16 萨夫罗克有限公司 Aqueous electroplating bath and use thereof
US11781232B2 (en) 2020-04-23 2023-10-10 Savroc Ltd Aqueous electroplating bath and its use
US11795559B2 (en) 2020-04-23 2023-10-24 Savroc Ltd Adhesion of a chromium-based coating on a substrate
US12006586B2 (en) 2020-04-23 2024-06-11 Savroc Ltd Object comprising a chromium-based coating with a high Vickers hardness, production method, and aqueous electroplating bath therefor
WO2022229175A1 (en) * 2021-04-27 2022-11-03 Vdeh-Betriebsforschungsinstitut Gmbh Device and method for coating a component or semi-finished product with a chromium layer

Also Published As

Publication number Publication date
SE7412152L (en) 1975-04-11
DE2447897A1 (en) 1975-04-17
NL7413211A (en) 1975-04-14
FR2247550A1 (en) 1975-05-09
JPS5742713B2 (en) 1982-09-10
US3917517A (en) 1975-11-04
AU7383874A (en) 1976-04-08
JPS5066442A (en) 1975-06-04
FR2247550B1 (en) 1979-04-27
CA1030094A (en) 1978-04-25
IT1020962B (en) 1977-12-30
BE820802A (en) 1975-02-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee