Classifications

• • C—CHEMISTRY; METALLURGY
  • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
  • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
  • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
  • C23C16/02—Pretreatment of the material to be coated
  • C23C16/0272—Deposition of sub-layers, e.g. to promote the adhesion of the main coating
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16J—PISTONS; CYLINDERS; SEALINGS
  • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
  • F16J9/26—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
  • H01J37/32—Gas-filled discharge tubes
  • H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
  • H01J37/3464—Operating strategies
  • H01J37/3467—Pulsed operation, e.g. HIPIMS

Definitions

• the invention relates to a method for coating
• the invention to be coated piston ring is
• Oil scraper ring provided in a piston of an internal combustion engine.
• the actual piston ring which is in sliding contact with a cylinder or a cylinder liner, pressed by an internal helical compression spring against the cylinder wall.
• On the inner surface of the piston ring it is thus due to the dynamic stress during operation of the motor relative movements between the
• DE 196 51 112 AI relates to a completely provided with a coating ⁇ labstreifring on a
• JP2006349019 (A) discloses a piston ring with an amorphous hard carbon coating.
• the invention is based on the object, a method for coating a piston ring and a coated
• PA-CVD plasma enhanced chemical vapor deposition
• glow discharge or high ionization processes, such as a piston ring, preferably made of cast iron or steel, is used.
• the piston ring on its cylindrical inner surface and is preferably coated at least in those areas, for example in the region of a hose spring groove, which are in contact with the hose spring.
• other surfaces such as the flanks and / or the tread, may be provided with the coating described herein.
• the described layers have been found to have very low coefficients of friction. Consequently, in addition advantageously low wear on the hose spring is to be expected. Finally, the layers described are chemically comparatively highly resistant, so that deposits are prevented, and advantageously a further improvement in the mobility of the entire oil ring system is achieved.
• the DLC layer can be called
• Hydrogen-free layer in particular in the form a-C or ta-C present.
• a hydrogen-containing, but metal-free layer for example in the form a-C: H or ta-C: H is conceivable.
• Nitrides and / or carbides at least one of the metals
• Deposition of the nitrides and carbides can take place alternately or simultaneously.
• a structure which has at least one of the following layers and to the base material of the piston ring first an adhesion layer of chromium and / or titanium with a layer thickness of 1.0 ⁇ or smaller. This is followed by a metal or semiconductor-containing intermediate layer, ie an aC: H: Me with tungsten, titanium or chromium as metal or aC: H: X with
• X silicon and / or germanium as semiconductors and / or one or more of the constituents fluorine, boron, oxygen and nitrogen.
• the thickness of this intermediate layer is preferably 0.1 ⁇ m to 5 ⁇ m.
• the construction described is completed by a metal-free top layer of the type a ⁇ C: H having a thickness of preferably 0.1 ⁇ m to 5 ⁇ m.
• metal-containing DLC interlayer containing nanocrystalline metal or metal carbide precipitates e.g. WC, CrC, Sic, GeC or TiC.
• sputtering and in particular hollow cathode glow discharge methods can also be used for the DLC layer.
• piston ring coated in particular coated on the inner surface, described herein, may advantageously have the same name as the application filed in the same day
• Helical compression spring for an oil scraper ring of a piston in an internal combustion engine and method for coating a helical compression spring described helical compression spring can be combined in one of the embodiments given there.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• General Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Physics & Mathematics (AREA)
• Analytical Chemistry (AREA)
• Plasma & Fusion (AREA)
• Chemical Vapour Deposition (AREA)
• Pistons, Piston Rings, And Cylinders (AREA)
• Physical Vapour Deposition (AREA)
• Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44022914

Family Applications (1)

Country Status (8)

Families Citing this family (16)

Citations (3)

Family Cites Families (33)

• 2010
  • 2010-03-09 DE DE102010002687.5A patent/DE102010002687C5/de active Active
• 2011
  • 2011-02-17 KR KR1020127026365A patent/KR101781618B1/ko active IP Right Grant
  • 2011-02-17 BR BR112012022013A patent/BR112012022013B1/pt active IP Right Grant
  • 2011-02-17 WO PCT/EP2011/052342 patent/WO2011110411A2/de active Application Filing
  • 2011-02-17 JP JP2012556430A patent/JP5855026B2/ja active Active
  • 2011-02-17 US US13/583,715 patent/US20130136861A1/en not_active Abandoned
  • 2011-02-17 EP EP11704068A patent/EP2545195A2/de not_active Withdrawn
  • 2011-02-17 CN CN201180012801.4A patent/CN103620085B/zh active Active

Patent Citations (3)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events