Method for coating surface of moving part of vehicle and moving part of vehicle manufactured by the same

Patent metadata

Field	Value
Publication number	US-2018056623-A1
Application number	US-201715653224-A
Country	US
Kind code	A1
Filing date	Jul 18, 2017
Priority date	Aug 24, 2016
Publication date	Mar 1, 2018
Grant date	—

Abstract

A method for coating a surface of a moving part of a vehicle may include a coating preparation process of disposing a screen having a plurality of meshes to be distanced from a surface of the moving part of the vehicle to be coated depending on a predetermined spaced distance; and a coating layer deposition process of forming a coating layer having a pattern having a shape in which a plurality of embossings corresponding to the mesh shape is repeated on the surface of the moving part of the vehicle by a vacuum deposition scheme and forming the coating layer so that the adjacent emboss is connected to each other.

First claim

What is claimed is:

1 . A method for coating a surface of a moving part of a vehicle, comprising:
a coating preparation process of disposing a screen having a plurality of meshes to be distanced from a surface of the moving part of the vehicle to be coated depending on a predetermined spaced distance; and a coating layer deposition process of forming a coating layer having a pattern having a shape in which a plurality of embossings corresponding to the mesh shape is repeated on the surface of the moving part of the vehicle by a vacuum deposition scheme and forming the coating layer wherein adjacent embossings are connected to each other.

2 . The method of claim 1 , wherein in the coating layer deposition process, the coating layer is deposited by any one of physical vapor deposition (PVD) and chemical vapor deposition and the coating layer is made of a material including at least one selected from metals, carbons, nitrides, and carbides.

3 . The method of claim 2 , wherein the coating layer has a multi-layer structure in which a plurality of coating layers having heterogeneous materials are stacked to improve low friction characteristics.

4 . The method of claim 1 , wherein in the coating preparation process, the screen is disposed to be distanced from the surface of the moving part of the vehicle by 0.5 to 200 μm.

5 . The method of claim 1 , further comprising:
prior to the coating layer deposition process, a buffer layer deposition process of depositing a buffer layer on the surface of the moving part of the vehicle to improve an adhesion of the coating layer.

6 . The method of claim 5 , wherein in the buffer layer deposition process, the buffer layer including a metal nitride material is deposited by any one of physical vapor deposition (PVD) and chemical vapor deposition (CVD).

7 . A moving part of a vehicle, wherein a surface of a moving part is formed with a coating layer including a plurality of protrusions protruding while being distanced from each other at an equal interval in vertical and horizontal directions thereof and a plurality of connection parts disposed between adjacent protrusions to connect between the adjacent protrusions and formed to be lower than a height of the protrusions.

8 . The moving part of the vehicle of claim 7 , wherein in the protrusions, a coating thickness rate determined by the following Equation (1) ranges from 10 to 95%.
Coating thickness rate (%)= B/A× 100  (1)
Wherein A represents a thickness (μm) of the protrusions of the coating layer and B represents a thickness (μm) of connection parts of the coating layer.

9 . The moving part of the vehicle of claim 7 , wherein the coating layer is made of a material including at least one selected from metals, carbons, nitrides, and carbides and is deposited by any one of physical vapor deposition (PVD) and chemical vapor deposition (CVD).

10 . The moving part of the vehicle of claim 7 , further comprising:
a buffer layer configured to be disposed on a bottom surface of the coating layer to minimize a difference in lattice constant between the surface of the moving part of the vehicle and the coating layer.

11 . The moving part of the vehicle of claim 10 , wherein the buffer layer is formed at a thickness of 0.1 mm or less.

12 . The moving part of the vehicle of claim 10 , wherein the buffer layer includes a plurality of buffer protrusions and buffer connection parts each formed at positions corresponding to the plurality of protrusions and connection parts, and
the buffer connection parts connect between adjacent buffer protrusions and is formed to be lower than a height of the buffer protrusions.

13 . The moving part of the vehicle of claim 8 , wherein in the coating thickness rate ranges from 25 to 60%.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp
• Dongwoo Hst Co Ltd

Inventors

• An Jeong Uk
• Chung Won Ki
• Lee Jun Seok

Classifications

• B41N1/006

  made entirely of inorganic materials other than natural stone or metals, e.g. ceramics, carbide materials, ferroelectric materials · CPC title

• C10M103/06

  Metal compounds · CPC title

• B05D5/08

  to obtain an anti-friction or anti-adhesive surface (rendering particulate materials free-flowing in general, e.g. making them hydrophobic B01J2/30) · CPC title

• B05D7/51

  One specific pretreatment, e.g. phosphatation, chromatation, in combination with one specific coating (pretreatment of metallic substrates C23C; pretreatment before coating in general B05D3/00) · CPC title

• C23C14/042 Primary

  using masks · CPC title