Member having sliding contact surface, compressor and rotary compressor

CAFC
  • US 6,071,103 A
  • Filed: 07/17/1997
  • Issued: 06/06/2000
  • Est. Priority Date: 07/18/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A member comprising:

  • a main body having a sliding contact surface;

    a hard carbon film provided on said sliding contact surface of the main body, wherein said hard carbon film comprises a diamond thin film, a film having a mixed diamond and amorphous structure or an amorphous carbon thin film;

    a mixed layer formed within a thickness region of said main body adjacent to said sliding contact surface thereof and containing carbon and a constituent element of said thickness region of the main body; and

    said mixed layer having a carbon content gradient in its thickness direction so that a carbon content in a thickness portion thereof closer to an outer surface of the mixed layer is higher than in a thickness portion thereof remoter from the outer surface of the mixed layer, wherein said mixed layer is formed by introducing the carbon into said thickness region of the main body adjacent to the sliding contact surface thereof.

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