GB1371172A - Process and bath for electrolytically producing micro-fissured chrome layers - Google Patents

Process and bath for electrolytically producing micro-fissured chrome layers

Info

Publication number
GB1371172A
GB1371172A GB83772A GB83772A GB1371172A GB 1371172 A GB1371172 A GB 1371172A GB 83772 A GB83772 A GB 83772A GB 83772 A GB83772 A GB 83772A GB 1371172 A GB1371172 A GB 1371172A
Authority
GB
United Kingdom
Prior art keywords
bath
intermediate layer
electrolytically
fissured
ions
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
GB83772A
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.)
Langbein Pfanhauser Werke AG
Original Assignee
Langbein Pfanhauser Werke AG
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 Langbein Pfanhauser Werke AG filed Critical Langbein Pfanhauser Werke AG
Publication of GB1371172A publication Critical patent/GB1371172A/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
    • C25D5/10—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
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • 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
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/625—Discontinuous layers, e.g. microcracked layers

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)

Abstract

1371172 Electrolytically producing microfissured chromium LANGBEIN-PFANHAUSER WERKE A G 7 Jan 1972 [11 Jan 1971] 837/72 Heading C7B A micro-fissured Cr layer is produced on an intermediate layer of Ni, Co, Ni-Fe, Ni-Co or Fe- Co by electrolytically depositing at 35 to 70‹C the intermediate layer from a bath of electrolyte which includes the metallic ions, NH 4 ions, Cl ions and at least one aromatic carboxylic acid or a salt of this, and on to this intermediate layer electrolytically applying the Cr layer from a Cr deposition bath. Examples of materials which can be used in preparing the bath for producing the intermediate layer are benzoic acid, "o", "m" or "p" terephthalic acid, benzyl-acetic acid; Ni, Co and Fe sulphate, sulphamate, chloride, fluoborate, fluoride and acetate, NH 4 Cl, MgCl 2 , alkali metal chloride and R 3 BO 3 . The intermediate layer may be electro-deposited at 3-20 A/dm<SP>2</SP>, a pH of 2À5-6 and operating temperature of 35-70‹C for 1-10 mins. The Cr may be electrodeposited at 3-12 A/dm<SP>2</SP> from a bath at a temperature of 25-35‹C. In the Example, the bath contains chromic and sulphuric acids and aluminium fluosilicate.
GB83772A 1971-01-11 1972-01-07 Process and bath for electrolytically producing micro-fissured chrome layers Expired GB1371172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2100971A DE2100971B2 (en) 1971-01-11 1971-01-11 Process and bath for the production of micro-cracked chrome layers over intermediate layers

Publications (1)

Publication Number Publication Date
GB1371172A true GB1371172A (en) 1974-10-23

Family

ID=5795549

Family Applications (1)

Application Number Title Priority Date Filing Date
GB83772A Expired GB1371172A (en) 1971-01-11 1972-01-07 Process and bath for electrolytically producing micro-fissured chrome layers

Country Status (6)

Country Link
US (1) US3753872A (en)
DE (1) DE2100971B2 (en)
FR (1) FR2123246B1 (en)
GB (1) GB1371172A (en)
IT (1) IT946426B (en)
SE (1) SE401209B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2237807C3 (en) * 1972-08-01 1978-04-27 Langbein-Pfanhauser Werke Ag, 4040 Neuss Process for the production of micro-cracked chrome layers over intermediate layers
US5871641A (en) * 1996-05-30 1999-02-16 H-Tech, Inc. Fluid filter with pleated septum
US20060096868A1 (en) * 2004-11-10 2006-05-11 Siona Bunce Nickel electroplating bath designed to replace monovalent copper strike solutions
US9315736B2 (en) 2010-12-16 2016-04-19 Energia Technologies, Inc. Methods of fuel production
BR112013014687B1 (en) * 2010-12-16 2019-02-05 Energia Technologies, Inc. oxygenated hydrocarbon deoxygenation method
EP3714085B1 (en) * 2017-11-20 2023-08-09 Basf Se Composition for cobalt electroplating comprising leveling agent

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471271A (en) * 1965-08-16 1969-10-07 Udylite Corp Electrodeposition of a micro-cracked corrosion resistant nickel-chromium plate

Also Published As

Publication number Publication date
DE2100971B2 (en) 1975-04-17
FR2123246B1 (en) 1974-06-21
FR2123246A1 (en) 1972-09-08
DE2100971A1 (en) 1972-07-13
US3753872A (en) 1973-08-21
SE401209B (en) 1978-04-24
IT946426B (en) 1973-05-21

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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