Textured coating on a component surface
AssigneeCaterpillar Inc.
InventorsShuangbio Liu, Chuong Quang Dam, Bao Feng, Dongyun Hua
Life of this patent
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Abstract
The present disclosure is directed to a method of making a textured coating on a wear surface of a component. The method includes applying a mask on the surface and depositing a tribological coating on the surface. The method further includes removing the mask.
Claims18
A method of making a textured coating on a wear surface of a machine component, the method comprising:
- providing a machine component selected from the group consisting of a fuel injector plunger, a gear, a piston, a ring, a bearing, a cam, a follower, a transmission component, and a hydraulic pump,
- selectively applying a mask on the wear surface of the machine component to create a pattern of exposed portions of the wear surface;
- depositing a tribological coating on the mask and on the pattern of exposed portions of the wear surface such that the tribological coating conforms to the shape of the wear surface with the mask, the tribological coating on the exposed portions creating a tribological pattern of intersecting lines raised above the wear surface;
- and
- removing the mask along with the tribological coating deposited on the mask to leave the tribological pattern on the wear surface and to create reservoirs between the intersecting lines of the tribological pattern,
- wherein the tribological pattern provides wear resistance and the reservoirs provide areas where lubricant and/or debris can accumulate.
A method of making a textured coating on a wear surface of a machine component, the method comprising:
- providing a machine component selected from the group consisting of a fuel injector plunger, a gear, a piston, a ring, a bearing, a cam, a follower, a transmission component, and a hydraulic pump,
- applying a first mask to the wear surface to create a first pattern of exposed portions of the wear surface and shadow portions covered by the first mask;
- depositing a first tribological coating on the wear surface using a physical vapor deposition process at a temperature of less than 300° C., the tribological coating covering the first mask and the exposed portions;
- removing the first mask along with the tribological coating deposited on the first mask to obtain a first tribological pattern that includes a plurality of intersecting lines above the wear surface;
- operating the machine component such that the first tribological pattern will be subject to wear;
- and
- depositing a second tribological pattern that includes a plurality of intersecting lines on the wear surface of the machine component;
- wherein the second tribological pattern provides a wear resistance and a second pattern of exposed portions that provide areas where lubricant and/or debris can accumulate.
A method of making a coating on a wear surface of a machine component selected from the group consisting of a fuel injector plunger, a gear, a piston, a ring, a bearing, a cam, a follower, a transmission component, and a hydraulic pump, the method comprising:
- attaching a resin mask to the wear surface of the machine component to selectively cover shadow portions of the wear surface of the machine component and expose a pattern of exposed portions of the wear surface that includes a plurality of intersecting lines;
- applying a coating on the pattern of exposed portions and on the resin mask using a physical vapor deposition process at a temperature of less than 200° C. to create a coating pattern of intersecting lines that is raised above the wear surface;
- and
- removing the resin mask along with the coating deposited on the resin mask from the wear surface after applying the coating.
Dependencies are inferred from the claim text.