Back to results
US 2013/0075977 A1Published application
Piston ring for engine and manufacturing method thereof
AssigneeHyundai Motor Company
InventorJeong Uk An
Life of this patent
Estimating the term…
Abstract
Disclosed is a piston ring for an engine and a method of manufacturing the piston ring. The piston ring includes at least a Cr (Chromium) coating layer coated on a surface of a base material, and a Si-DLC (Silicon doped Diamond Like Carbon) coating layer coated on an outermost layer above the Cr layer and the base material. More specifically, the Si-DLC layer includes about 3 to 10 wt. % of Si.
Claims12
A piston ring for an engine comprising:
- a Cr (Chromium) coating layer coated on a surface of a base material;
- and
- an Si-DLC (Silicon doped Diamond Like Carbon) coating layer coated on an outermost layer above the Cr coating layer and the base material, the Si-DLC layer include about 3 to 10 wt. % of Si.
A method of manufacturing a piston ring for an engine comprising:
- a) coating a Cr coating layer on a base material of the piston ring;
- and
- b) coating a Si-DLC coating layer through chemical reaction between carbonization gas (CxHy) and TMS gas or between carbonization gas and HMDSO gas on above the Cr coating layer on the piston ring.
Dependencies are inferred from the claim text.