Swash plate of swash-plate type compressor

摘要

A swash plate of a swash plate-type compressor is covered with a resin-based coating layer containing 5 to 60 mass % of spherical graphite particles having an average particle diameter of 5 to 50 μm, the balance being one or more species selected from polyimide resin and polyamide-imide resin. The spherical graphite particles excepting minute particles having a particle diameter 0.5 times or smaller the average particle diameter, have an average shape coefficient (YAVE) falling within a range of 1 to 4, and 70% or more in number of the spherical graphite particles have a shape coefficient (Y) within a range of 1 to 1.5,
YAVE=total[{PMi2/4πAi}]/i Y=PM2/4πA
wherein “total” indicates that a value in [ ] is totalized for number “i”, “PM” indicates the circumferential length of one particle, “A” indicates a cross sectional area of one particle, and “i” indicates the measurement number.

主权项

1. A swash plate of a swash plate-type compressor comprising:
a swash plate and shoes which slide thereon, wherein the swash plate is covered with a resin-based coating layer with or without intermediation of an intermediate layer, said coating layer containing 5 to 60 mass % of spherical graphite particles having an average particle diameter of 5 to 50 μm, the balance being one or more species selected from polyimide resin and polyamide-imide resin, with the proviso that said spherical graphite particles, excepting minute particles having a particle diameter 0.5 times or smaller the average particle diameter, have an average shape coefficient (YAVE), as defined below, falling within a range of 1 to 4, and further 70% or more in number of the spherical graphite particles have a shape coefficient (Y), as defined below, within a range of 1 to 1.5,
YAVE=total[{PMi2/4πAi}]/i Y=PM2/4 πA wherein, “total” indicates that a value in [ ] is totalized for number “i”, “PM” indicates the circumferential length of one particle, “A” indicates a cross sectional area of one particle, and “i” indicates the measurement number.