The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2019
Filed:
Apr. 08, 2017
National Tsing Hua University, Hsinchu, TW;
Jien-Wei Yeh, Hsinchu, TW;
Abstract
In the present invention, a multi-film structure being coated on the surface of a workpiece is disclosed. The multi-film structure is formed by making a high-entropy material film of at least two layers and a non-high-entropy material film of at least one layer be stacked on each other. In addition, the multi-film structure can also be formed by making a first high-entropy material film of at least one layer and a second non-high-entropy material film of at least one layer be stacked on each other. This multi-film structure particularly contains interlaminar interfaces to inhibit crack extension and reduce plastic deformation, so that the hardness and toughness of the workpiece coated with this inventive multi-film structure would be obviously enhanced. Moreover, the appearance color of the workpiece can also be changed by the multi-film structure, wherein the color type is dependent on the optical interferences occurring in the multi-film structure.