A method of etching PVD-coated stainless steel, may include machining to form irregularities on a surface of a steel member; coating the steel member by providing a coating layer on crests of the irregularities but not on throughs, the coating layer imparting color and texture to the steel member; m
A method of etching PVD-coated stainless steel, may include machining to form irregularities on a surface of a steel member; coating the steel member by providing a coating layer on crests of the irregularities but not on throughs, the coating layer imparting color and texture to the steel member; masking in which the surface of the steel member is partially provided with a masking layer such that the surface of the steel member includes a masking area and an exposed area; and etching the coating layer provided on the exposed area to remove the coating layer.
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1. A method of etching physical vapor deposition (PVD)-coated stainless steel, the method comprising: machining a steel member to form irregularities on a surface of the steel member;coating the steel member by providing a coating layer on crests of the irregularities but not on throughs of the irre
1. A method of etching physical vapor deposition (PVD)-coated stainless steel, the method comprising: machining a steel member to form irregularities on a surface of the steel member;coating the steel member by providing a coating layer on crests of the irregularities but not on throughs of the irregularities, the coating layer imparting color and texture to the steel member;masking the steel member, wherein the surface of the steel member is partially provided with a masking layer and the surface of the steel member includes a masking area and an exposed area; andetching the coating layer provided on the exposed area to remove the coating layer, wherein the etching is started from the throughs of the irregularities to the crests of the irregularities to corrode the coating layer such that the coating layer provided on the crests of the irregularities is removed. 2. The method of claim 1, wherein the coating layer provided at the coating is 0.05 μm to 0.15 μm in thickness. 3. The method of claim 1, wherein, at the coating of the steel member, the crests where electric charges are concentrated on the irregularities are deposited with the coating layer by use of the PVD. 4. The method of claim 1, wherein, at the masking of the steel member, a photosensitive film is attached on the surface of the steel member and a predetermined area of the photosensitive film is irradiated with ultraviolet light to remove the photosensitive film at a position corresponding to the exposed area. 5. The method of claim 1, wherein, at the machining of the steel member, the irregularities are formed on the surface of the steel member, the irregularities ranging from 5 μm to 100 μm in depth and ranging from 5 μm to 100 μm in width. 6. The method of claim 1, wherein, after the etching of the coating layer, the surface of the steel member is configured with a hole in which a depth of the hole is equal to or greater than 100 μm. 7. The method of claim 1, wherein, at the masking of the steel member, a hole has a predetermined area in a continuous manner to give the exposed area a predetermined shape. 8. The method of claim 1, wherein, after the etching of the coating layer, the steel member is configured with a through-hole penetrating through the steel member in a thickness direction of the steel member. 9. The method of claim 1, wherein, at the masking of the steel member, a plurality of holes configured in a same size is disposed in a predetermined interval with adjacent holes of the plurality of holes to give the exposed area a predetermined shape. 10. The method of claim 9, wherein, at the masking of the steel member, the plurality of holes is configured in a circle having a diameter of 0.1 mm to 0.3 mm. 11. The method of claim 1, wherein, at the machining of the steel member, the surface of the steel member is abraded with abrasives to form the irregularity on the surface of the steel member. 12. The method of claim 11, wherein, at the coating of the steel member, the steel member is coated in a roll-to-roll PVD manner. 13. The method of claim 1, wherein, at the machining of the steel member, the steel member is passed between rolls in which each surface of the rolls is configured with embossments to form the irregularity on the surface of the steel member. 14. The method of claim 13, wherein, at the coating of the steel member, the steel member is coated in a roll-to-roll PVD manner. 15. The method of claim 1, wherein a coating material for forming the coating layer includes TiC, TiCN, TiN, or TiAlN. 16. The method of claim 15, wherein the coating material is sputtered by a sputterer onto the surface of the steel member.
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