EP0355430A3 - Fraction-subjected aluminium component - Google Patents

Fraction-subjected aluminium component Download PDF

Info

Publication number
EP0355430A3
EP0355430A3 EP19890113552 EP89113552A EP0355430A3 EP 0355430 A3 EP0355430 A3 EP 0355430A3 EP 19890113552 EP19890113552 EP 19890113552 EP 89113552 A EP89113552 A EP 89113552A EP 0355430 A3 EP0355430 A3 EP 0355430A3
Authority
EP
European Patent Office
Prior art keywords
surface coating
fraction
subjected
aluminium component
hardness
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Withdrawn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
EP19890113552
Other languages
German (de)
French (fr)
Other versions
EP0355430A2 (en
Inventor
Alfred Rutka
Götz Mielsch
Rudolf Dr. Flierl
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0355430A2 publication Critical patent/EP0355430A2/en
Publication of EP0355430A3 publication Critical patent/EP0355430A3/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Withdrawn legal-status Critical Current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
    • C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
    • C25D15/02—Combined electrolytic and electrophoretic processes with charged materials
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/02—Surface coverings of combustion-gas-swept parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

Ein Aluminium-Ventilstößel einer Brennkraftmaschine weist eine Oberflächenbeschichtung in Form einer mit einem Härtebildner versehenen Nickel-Dispersionsschicht auf. Zwischen dem Aluminium-Grundwerkstoff (1) sowie der Oberflächenbeschichtung (4) ist eine Zwischenschicht (3) vorgesehen, deren Härte zwischen der des Aluminium-­ Grundwerkstoffes sowie der Oberflächenbeschichtung liegt. Auf diese Weise hält der beschichtete Ventil­ stößel höchsten Flächenpressungen und Schubspannungen Stand. An aluminum valve lifter of an internal combustion engine has a surface coating in the form of a a hardness-forming nickel dispersion layer on. Between the aluminum base material (1) and the Surface coating (4) is an intermediate layer (3) provided, the hardness between that of the aluminum Base material and the surface coating lies. In this way the coated valve holds ram with the highest surface pressures and shear stresses Was standing.

EP19890113552 1988-08-23 1989-07-24 Fraction-subjected aluminium component Withdrawn EP0355430A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3828527 1988-08-23
DE3828527 1988-08-23

Publications (2)

Publication Number Publication Date
EP0355430A2 EP0355430A2 (en) 1990-02-28
EP0355430A3 true EP0355430A3 (en) 1991-06-12

Family

ID=6361385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890113552 Withdrawn EP0355430A3 (en) 1988-08-23 1989-07-24 Fraction-subjected aluminium component

Country Status (1)

Country Link
EP (1) EP0355430A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2438218B1 (en) * 2009-03-13 2015-09-30 Stohrer IPT AG Workpiece with two nickel-containing layers
WO2010102807A2 (en) * 2009-03-13 2010-09-16 Ipt International Plating Technologies Gmbh Nickel-containing layer arrangement for intaglio printing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281293A (en) * 1963-07-19 1966-10-25 Chemcut Corp Method of etching aluminum
FR2159179A1 (en) * 1971-11-09 1973-06-22 Citroen Sa
FR2475582A1 (en) * 1980-02-13 1981-08-14 Peugeot Cycles Electrodeposition of nickel contg. hard particle dispersion - using chemically plated zinc-nickel layer to improve nickel adhesion to light metal alloy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281293A (en) * 1963-07-19 1966-10-25 Chemcut Corp Method of etching aluminum
FR2159179A1 (en) * 1971-11-09 1973-06-22 Citroen Sa
FR2475582A1 (en) * 1980-02-13 1981-08-14 Peugeot Cycles Electrodeposition of nickel contg. hard particle dispersion - using chemically plated zinc-nickel layer to improve nickel adhesion to light metal alloy

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Band 103, Nr. 14, 7. Oktober 1985; J.W. BOECKER et al.: "Active carbon purification of nickel electroplating bath", & GALVANOTECH. SYMP., (VORTR.), 7th, 51-4 *

Also Published As

Publication number Publication date
EP0355430A2 (en) 1990-02-28

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