Patent ID: 7422797
Filing Date: 2008-09-09
Classification: C25D,F16C,Y10T

Abstract:
1. An article including a sliding portion on which a plating layer is disposed, the plating layer comprising Cr that is electrolytically-deposited in a plating bath containing Cr, wherein said plating bath contains organic sulfonic acid, said plating layer has micro-cracks formed at the surface thereof, whose width is 0.1 μm or more and 3 μm or less and whose number per a unit length is 400/cm or more and 1300/cm or less, and the surface of the plating layer has more than 1 of an intensity ratio of a X-ray diffraction peak of (200) plane of Cr crystal with BCC-structure relative to that of (211) plane of Cr crystal with BCC-structure.