DK134572B - Method and means for electrodeposition of black, chromium-containing surface layers on an electrically conductive member. - Google Patents

Method and means for electrodeposition of black, chromium-containing surface layers on an electrically conductive member.

Info

Publication number
DK134572B
DK134572B DK178067AA DK178067A DK134572B DK 134572 B DK134572 B DK 134572B DK 178067A A DK178067A A DK 178067AA DK 178067 A DK178067 A DK 178067A DK 134572 B DK134572 B DK 134572B
Authority
DK
Denmark
Prior art keywords
electrodeposition
chromium
black
electrically conductive
conductive member
Prior art date
Application number
DK178067AA
Other languages
Danish (da)
Other versions
DK134572C (en
Inventor
John Bailey Nelson Jr
Original Assignee
Du Pont
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 Du Pont filed Critical Du Pont
Publication of DK134572B publication Critical patent/DK134572B/en
Application granted granted Critical
Publication of DK134572C publication Critical patent/DK134572C/da

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
    • C25D3/08—Deposition of black chromium, e.g. hexavalent chromium, CrVI

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)
  • Catalysts (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Treating Waste Gases (AREA)
DK178067AA 1966-04-08 1967-03-31 Method and means for electrodeposition of black, chromium-containing surface layers on an electrically conductive member. DK134572B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US541075A US3419481A (en) 1966-04-08 1966-04-08 Electrolyte and process for electroplating black chromium and article thereby produced
US59536466A 1966-11-18 1966-11-18

Publications (2)

Publication Number Publication Date
DK134572B true DK134572B (en) 1976-11-29
DK134572C DK134572C (en) 1977-05-02

Family

ID=27066598

Family Applications (1)

Application Number Title Priority Date Filing Date
DK178067AA DK134572B (en) 1966-04-08 1967-03-31 Method and means for electrodeposition of black, chromium-containing surface layers on an electrically conductive member.

Country Status (13)

Country Link
US (2) US3419481A (en)
AT (1) AT272787B (en)
BE (1) BE696774A (en)
CH (1) CH473903A (en)
DE (1) DE1621060C3 (en)
DK (1) DK134572B (en)
ES (1) ES338946A1 (en)
FR (1) FR1522610A (en)
GB (1) GB1175461A (en)
IL (1) IL27753A (en)
NL (2) NL6704974A (en)
NO (1) NO121926B (en)
SE (1) SE337151B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6800734A (en) * 1967-01-18 1968-07-19
US3816142A (en) * 1972-05-08 1974-06-11 K Lindemann Electroless chromium plating process and composition
US3909404A (en) * 1973-02-26 1975-09-30 Oxy Metal Industries Corp Composition and process for electrodepositing a black chromium deposit
FR2529581A1 (en) * 1982-06-30 1984-01-06 Armines ELECTROLYSIS BATH BASED ON TRIVALENT CHROME
HU198970B (en) * 1986-02-19 1989-12-28 Visoram Szemuevegkeretgyar Electrolysis bath for making bright, black chromium plating
IN167895B (en) * 1988-01-05 1991-01-05 Council Scient Ind Res
EP3162919A1 (en) * 2015-10-29 2017-05-03 GmbH Franz Method for efficient black chromium plating i
CN106399990B (en) * 2016-08-16 2019-09-20 深圳市诚达科技股份有限公司 A kind of anti-coking nano material and preparation method thereof based on stainless steel surface
CN109183083B (en) * 2018-11-27 2020-05-12 东北大学 Method for improving surface energy of chromium-plated plate based on thermodynamic coupling problem
CN111206269B (en) * 2019-12-19 2021-03-30 陕西斯瑞新材料股份有限公司 Preparation method of electroplating black chromium with high heat radiation coefficient

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA624887A (en) * 1961-08-01 Allied Chemical Corporation Electrodeposition of black chromium coatings
US1953484A (en) * 1928-12-11 1934-04-03 Westinghouse Lamp Co Method of chromium plating
FR754360A (en) * 1929-10-16 1933-11-03
US2088615A (en) * 1932-06-29 1937-08-03 Schlotter Max Electrodeposition of chromium
DE881596C (en) * 1943-05-28 1953-07-02 Metallgesellschaft Ag Process to improve the sliding properties of metallic surfaces
US2354746A (en) * 1943-07-12 1944-08-01 Duzmal Stan Edward Attachment device
US2623847A (en) * 1947-09-10 1952-12-30 Lloyd O Gilbert Black chromium plating
US2507956A (en) * 1947-11-01 1950-05-16 Lithographic Technical Foundat Process of coating aluminum
US2777785A (en) * 1953-07-30 1957-01-15 Heintz Mfg Co Composition for and method of treating metals as well as the treated product
US2946728A (en) * 1955-06-23 1960-07-26 Cleveland Pneumatic Ind Inc Adherent electroplating on titanium
US2841541A (en) * 1955-10-28 1958-07-01 Diamond Alkali Co Chemical composition for chromium plating
US2841540A (en) * 1955-10-28 1958-07-01 Diamond Alkali Co Chemical composition for chromium plating
SU135319A1 (en) * 1960-05-21 1961-01-05 И.И. Левитан Combined black chrome plating
JPS3922105B1 (en) * 1962-12-20 1964-10-07

Also Published As

Publication number Publication date
IL27753A (en) 1970-10-30
CH473903A (en) 1969-06-15
FR1522610A (en) 1968-04-26
NL6704974A (en) 1967-10-09
NO121926B (en) 1971-04-26
US3419481A (en) 1968-12-31
ES338946A1 (en) 1968-09-01
DE1621060A1 (en) 1971-05-27
DE1621060B2 (en) 1976-04-15
US3511759A (en) 1970-05-12
NL157950B (en) 1978-09-15
DE1621060C3 (en) 1978-01-19
AT272787B (en) 1969-07-25
BE696774A (en) 1967-10-09
SE337151B (en) 1971-07-26
GB1175461A (en) 1969-12-23
DK134572C (en) 1977-05-02
NL7403683A (en) 1974-06-25

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Legal Events

Date Code Title Description
PBP Patent lapsed