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SLIDING MEMBER AND SLIDING MACHINE

  • US 20190323498A1
  • Filed: 01/03/2019
  • Published: 10/24/2019
  • Est. Priority Date: 04/20/2018
  • Status: Active Grant
First Claim
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1. A sliding member having a sliding surface sliding under a wet condition in which a lubricant oil exists,the sliding surface being coated with a laminate film comprising an upper layer and a lower layer,the lower layer comprising hydrogen-free amorphous carbon (referred to as “

  • hydrogen-free DLC”

    ) and carbon particles dispersed on or in the hydrogen-free DLC and having a hydrogen content of 5 atom % or less when the lower layer as a whole is 100 atom %,the upper layer comprising boron-containing amorphous carbon (referred to as “

    B-DLC”

    ) and having protrusions on a surface side of the upper layer along the carbon particles of the lower layer, the B-DLC having a boron content of 1-40 atom % when the upper layer as a whole is 100 atom %,the protrusions having a particle diameter of 0.5-5 μ

    m and existing with a density of 20 protrusions/100 μ

    m2 or more.

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