EP0171817A3 - Composition and process for electrodepositing a zn or zn/si/p coating on metal substrates - Google Patents

Composition and process for electrodepositing a zn or zn/si/p coating on metal substrates Download PDF

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Publication number
EP0171817A3
EP0171817A3 EP85110271A EP85110271A EP0171817A3 EP 0171817 A3 EP0171817 A3 EP 0171817A3 EP 85110271 A EP85110271 A EP 85110271A EP 85110271 A EP85110271 A EP 85110271A EP 0171817 A3 EP0171817 A3 EP 0171817A3
Authority
EP
European Patent Office
Prior art keywords
coating
zinc
weight
metal substrate
silicon
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Withdrawn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
EP85110271A
Other languages
German (de)
French (fr)
Other versions
EP0171817A2 (en
Inventor
Yu-Ling Teng
Charles Mccoy
Francis Defalco
Richard Mayernick
Chong Tan Liu
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.)
Kollmorgen Corp
Original Assignee
Kollmorgen Technologies Corp
Kollmorgen Corp
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 US06/641,557 external-priority patent/US4533606A/en
Priority claimed from US06/753,420 external-priority patent/US4672007A/en
Priority claimed from US06/757,721 external-priority patent/US4663000A/en
Application filed by Kollmorgen Technologies Corp, Kollmorgen Corp filed Critical Kollmorgen Technologies Corp
Publication of EP0171817A2 publication Critical patent/EP0171817A2/en
Publication of EP0171817A3 publication Critical patent/EP0171817A3/en
Withdrawn legal-status Critical Current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
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C25D3/565—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of zinc

Abstract

The present invention provides an aqueous composition and process for electrodespositing a layer of a ductile, strongly adhering, adsorptive and/or absorptive zinc coating or zinc coating comprising silicon and phosphorous on a metal substrate. The electrodeposition composition is pre­ parer by reacting metallic silicon and zinc with phosphoric acid and an alkali metal hydroxide in the ratio of between 0,4 and 1,3 moles of alkali metal hydroxide per mole of phosphorus acid, and adjusting the solution to a pH of 1 or higher after completion of the reaction. The coating is deposited on the metal substrate by electrodeposition and comprises about 70 to 99.5% by weight of zinc, and about 0,1 to 10% by weight of silicon, and about 0,5 to 20% by weight of phoshorus.
The resulting Zn/Si/P coating improves the resistance of the metal substrate to corrosion, wear, galling, stress corrosion cracking and cracking during mechanical forming operations. While essentially all metals of industrial import­ ance may be coated, this process is especially important for ferrous metals, steels, stainless steels, copper, aluminium, chromium and titanium.
EP85110271A 1984-08-16 1985-08-16 Composition and process for electrodepositing a zn or zn/si/p coating on metal substrates Withdrawn EP0171817A3 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US641557 1975-12-17
US06/641,557 US4533606A (en) 1984-08-16 1984-08-16 Electrodeposition composition, process for providing a Zn/Si/P coating on metal substrates and articles so coated
US753420 1985-07-10
US06/753,420 US4672007A (en) 1984-08-16 1985-07-10 Electrodeposition composition and process for providing a Zn/Si/P coating on metal substrates
US06/757,721 US4663000A (en) 1985-07-25 1985-07-25 Process for electro-deposition of a ductile strongly adhesive zinc coating for metals
US757721 1985-07-25

Publications (2)

Publication Number Publication Date
EP0171817A2 EP0171817A2 (en) 1986-02-19
EP0171817A3 true EP0171817A3 (en) 1988-11-09

Family

ID=27417677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110271A Withdrawn EP0171817A3 (en) 1984-08-16 1985-08-16 Composition and process for electrodepositing a zn or zn/si/p coating on metal substrates

Country Status (4)

Country Link
EP (1) EP0171817A3 (en)
AU (1) AU4576685A (en)
CA (1) CA1249790A (en)
IL (1) IL75974A0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2725477B2 (en) * 1991-02-07 1998-03-11 住友金属工業株式会社 Zinc-based electroplating method for aluminum strip

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488246A (en) * 1944-08-25 1949-11-15 United Chromium Inc Process of electroplating zinc, and baths and compositions for use therein
US3694330A (en) * 1967-05-23 1972-09-26 Joachim Korpium Electroplating bath for depositing bright zinc plates
US4076600A (en) * 1976-12-20 1978-02-28 R. O. Hull & Company, Inc. Leveling agent for acid zinc electroplating baths and method
US4117088A (en) * 1977-01-10 1978-09-26 Merkl George Hydrophosphide-group containing multi-metal inorganic polymeric complex and method of making same
US4547269A (en) * 1983-09-28 1985-10-15 Metallgesellschaft Aktiengesellschaft Method of electrodepositing zinc on steel prior to phosphating

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488246A (en) * 1944-08-25 1949-11-15 United Chromium Inc Process of electroplating zinc, and baths and compositions for use therein
US3694330A (en) * 1967-05-23 1972-09-26 Joachim Korpium Electroplating bath for depositing bright zinc plates
US4076600A (en) * 1976-12-20 1978-02-28 R. O. Hull & Company, Inc. Leveling agent for acid zinc electroplating baths and method
US4117088A (en) * 1977-01-10 1978-09-26 Merkl George Hydrophosphide-group containing multi-metal inorganic polymeric complex and method of making same
US4547269A (en) * 1983-09-28 1985-10-15 Metallgesellschaft Aktiengesellschaft Method of electrodepositing zinc on steel prior to phosphating

Also Published As

Publication number Publication date
EP0171817A2 (en) 1986-02-19
IL75974A0 (en) 1985-12-31
CA1249790A (en) 1989-02-07
AU4576685A (en) 1986-02-20

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Inventor name: TENG, YU-LING

Inventor name: DEFALCO, FRANCIS

Inventor name: MAYERNICK, RICHARD

Inventor name: LIU, CHONG TAN

Inventor name: MCCOY, CHARLES