Surface treatment method for metal substrate and coated article manufactured by the same
US8956721B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 19, 2012 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | May 29, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A surface treatment method for metal substrate includes: a metal substrate is provided; a first color layer is deposited on the metal substrate, the first color layer being a TiC layer or a TiN layer; a second color layer is deposited on the first color layer, the first color layer being a CrC layer or a CrN layer, the color of the first color layer being different from the color of the second color layer; forming a shielding layer on partially of the second color layer; electrochemical etching the metal substrate, the second color layer not covered with the shielding layer being removed to form a recessed portion, the recessed portion being extend through the second color layer. A coated article for manufactured by the surface treatment method is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.