FR2139750A1 - Metal surface treatment - for obtaining a low uniform reflectivity - Google Patents

Metal surface treatment - for obtaining a low uniform reflectivity

Info

Publication number
FR2139750A1
FR2139750A1 FR7120185A FR7120185A FR2139750A1 FR 2139750 A1 FR2139750 A1 FR 2139750A1 FR 7120185 A FR7120185 A FR 7120185A FR 7120185 A FR7120185 A FR 7120185A FR 2139750 A1 FR2139750 A1 FR 2139750A1
Authority
FR
France
Prior art keywords
metal surface
obtaining
surface treatment
uniform reflectivity
low uniform
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.)
Granted
Application number
FR7120185A
Other languages
French (fr)
Other versions
FR2139750B1 (en
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.)
BATTISTA ANTONIO DI
CODA GEORGIO
Sev Marchal
Original Assignee
BATTISTA ANTONIO DI
CODA GEORGIO
Sev Marchal
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 BATTISTA ANTONIO DI, CODA GEORGIO, Sev Marchal filed Critical BATTISTA ANTONIO DI
Priority to FR7120185A priority Critical patent/FR2139750A1/en
Publication of FR2139750A1 publication Critical patent/FR2139750A1/en
Application granted granted Critical
Publication of FR2139750B1 publication Critical patent/FR2139750B1/fr
Granted 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
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/38—Chromatising
    • 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
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance

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)

Abstract

The metal surface is subject to a degreasing treatment followed by a nickel deposn. step. A matte layer of Ni is then deposited electrolytically followed by electrolytic deposition of a layer of black chromium oxide. The article is then rinsed and dried. Suitable for non-reflective surfaces on cars.
FR7120185A 1971-06-03 1971-06-03 Metal surface treatment - for obtaining a low uniform reflectivity Granted FR2139750A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7120185A FR2139750A1 (en) 1971-06-03 1971-06-03 Metal surface treatment - for obtaining a low uniform reflectivity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7120185A FR2139750A1 (en) 1971-06-03 1971-06-03 Metal surface treatment - for obtaining a low uniform reflectivity

Publications (2)

Publication Number Publication Date
FR2139750A1 true FR2139750A1 (en) 1973-01-12
FR2139750B1 FR2139750B1 (en) 1974-09-27

Family

ID=9078069

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7120185A Granted FR2139750A1 (en) 1971-06-03 1971-06-03 Metal surface treatment - for obtaining a low uniform reflectivity

Country Status (1)

Country Link
FR (1) FR2139750A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0029257A1 (en) * 1979-06-25 1981-05-27 Koninklijke Philips Electronics N.V. Substrate coated with a corrosion-resistant black layer and process for obtaining such a substrate
BE1003584A5 (en) * 1989-02-27 1992-04-28 Omi Internat Corp Composition and conversion method.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110219028B (en) * 2019-06-27 2021-06-25 九牧厨卫股份有限公司 High-blackness matte metal black composite coating and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1562616A (en) * 1967-05-16 1969-04-04
DE1947548B2 (en) * 1969-09-19 1971-03-11 Blasberg Gmbh & Co Kg Friedr Black chromium electro deposition from - baths contg phosphoric acid and hetavalentchromium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1562616A (en) * 1967-05-16 1969-04-04
DE1947548B2 (en) * 1969-09-19 1971-03-11 Blasberg Gmbh & Co Kg Friedr Black chromium electro deposition from - baths contg phosphoric acid and hetavalentchromium

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
L'article: 'Black Chromic Plating', par Branciasoli et Schutzman paru dans 'Platting', vol. 56, janvier 1969, pages 37 - 43 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0029257A1 (en) * 1979-06-25 1981-05-27 Koninklijke Philips Electronics N.V. Substrate coated with a corrosion-resistant black layer and process for obtaining such a substrate
BE1003584A5 (en) * 1989-02-27 1992-04-28 Omi Internat Corp Composition and conversion method.

Also Published As

Publication number Publication date
FR2139750B1 (en) 1974-09-27

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Legal Events

Date Code Title Description
ST Notification of lapse