Be used for wear resistant hard coating of workpiece and preparation method thereof

Be used for wear resistant hard coating of workpiece and preparation method thereof

  • CN 101,680,075 A
  • Filed: 03/03/2008
  • Published: 03/24/2010
  • Est. Priority Date: 03/23/2007
  • Status: Active Application
First Claim
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1. workpiece, has the surface, wherein said surface be coated with wear-resisting multi-layer type hard coat to small part by the PVD process deposits, wherein this hard coat comprises at least the first supporting layer and second nanocrystal layer, wherein this first layer is between this workpiece and this second layer, and wherein this first layer comprises the coating material of following composition:

  • (Ti aAl 1-a)N 1-x-yC xO y0.4<

    a<

    0.6,0≤

    x and y<

    0.3 wherein,Or(Al bCr 1-b)N 1-x-yC xO y0.5<

    b<

    0.7,0≤

    x and y<

    0.3 wherein;

    This second layer comprises the coating material of following composition;

    (Al 1-c-d-eCr cSi dM e)N 1-x-yC xO yAt least a element outside the dechromisation in the transition metal of the 4th, 5,6 families of M indication cycle table system wherein, and0.2<

    c≤

    0.35,

    0<

    d≤

    0.20,

    0<

    e≤

    0.04。

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