Sliding element, in particular a piston ring, having a coating

Sliding element, in particular a piston ring, having a coating

CN
  • CN 102,639,747 A
  • Filed: 05/11/2010
  • Published: 08/15/2012
  • Est. Priority Date: 08/13/2009
  • Status: Active Application
First Claim
Patent Images

1. the sliding members such as piston-ring;

  • Said sliding members has coating at least one slipping plane;

    Said coating from inside to outside comprises adhesion layer (10), contains DLC layer (12) and metal-free DLC layer (14) of metal (being preferably tungstenic);

    It is characterized in that the thickness of metal-free DLC layer is 0.7 to 1.5 with the ratio of the thickness of the DLC layer that contains metal, and/or with the ratio of the total thickness of coating be 0.4 to 0.6.

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