Ostrolenk Faber LLP
Piston ring
A piston ring is provided with a thermal spray coating that contains tungsten carbide and chrome carbide as a hard phase, and contains nickel as a metallic binder phase, and is characterized in that the thermal spray coating is formed by the spraying of a thermal spray powder that has been produced by means of a granulation sintering method, and that contains hard particles in which the mean particle diameter of the tungsten carbide has been adjusted by means of a BET method to fall within a range of not less than 0.15 μm and not more than 0.45 μm.
IHI CORPORATION IHI POWER SYSTEMS CO., LTD.
C C C C F
C23C C23C C23C C22C F16J
inventional inventional inventional inventional inventional
Hiroaki Nobuaki Takeshi Yoshiyuki Yoshiyuki
Mizuno Kato Yamada Saito Umemoto