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:
Jan. 13, 2026
Filed:
May. 18, 2025
Shanghai Jiaotong University, Shanghai, CN;
Zhao Shen, Shanghai, CN;
Yiheng Wu, Shanghai, CN;
Zhexin Cui, Shanghai, CN;
Yahuan Zhao, Shanghai, CN;
Xiaoqin Zeng, Shanghai, CN;
SHANGHAI JIAOTONG UNIVERSITY, Shanghai, CN;
Abstract
A preparation method for a gradient near-equiaxed crystal Cr coating on the surface of a zirconium alloy cladding is described. According to the present invention, a high-power impulse magnetron sputtering technology is adopted, and by self-modification of HiPIMS equipment, argon gas is introduced into a zirconium alloy cladding tube, the flow rate of the argon gas in the tube is controlled to regulate and control the tube wall temperature, parameters such as bias voltage, target-substrate distance, sputtering pressure and the like are comprehensively controlled to obtain a pure Cr near-equiaxed crystal coating on the surface of the zirconium alloy with three-layer gradient structure grains. The coating has good toughness and can improve the high-temperature oxidation resistance of the zirconium alloy cladding, significantly enhancing the ability of the cladding to resist serious accidents of the reactor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile