Resources Contact Us Home
Composite coatings

Image Number 11 for United States Patent #6143142.

The invention describes composite coatings, in particular comprising carbon and another metallic element such as silicon or aluminium. These coatings have improved properties compared with pure tetrahedral amorphous carbon coatings, in that they have reduced stress levels and can be deposited at higher thicknesses, whilst retaining acceptable hardness and other useful mechanical properties. Also described are methods of making composite coatings, materials for making the coatings and substrates coated therewith. Specifically, a method of applying a coating to a substrate using a cathode arc source, comprises generating an arc between a cathode target and an anode of the source and depositing positive target ions on the substrate to form the coating, wherein the coating is a composite of at least first and second elements and the target comprises said at least first and second elements. A composite coating comprises tetrahedral amorphous carbon and a metallic element other than carbon, the composite coating having an sp.sup.3 content of at least 60%. A target for use in a cathode arc source comprises a mixture of carbon and a metallic element other than carbon.

  Recently Added Patents
Trimming circuit and semiconductor device
Non-volatile memory array and device using erase markers
Smart television system having methods or means for accessing paid or subscribed digital content from the internet
Buffering stop structure and corresponding packing case
Radio communication system, base station apparatus, terminal apparatus, and radio communication method for radio communication system
Multiple CQI feedback for cellular networks
Message processing method and apparatus based on the SIP protocol and an IP communication system
  Randomly Featured Patents
Method of using tendon/ligament substitutes composed of long, parallel, non-antigenic tendon/ligament fibers
Combination of tool bit with handle
Automatic antenna tubing method and apparatus
Nail treating tool and method of treating nails
Borrelia burgdorferi polypeptides and uses thereof
Vehicle gas pedal
Telecommunications switch including an integrated internet access server
Heterocyclyl substituted tetrahydronaphthalene derivatives as 5-HT7 receptor ligands
Method of and system for drawing an image over stars in the sky with a laser beam
Thienopyridine derivatives, their production and use