US 11,053,605 B2
Metallic structure and a method for surface treatment of a metallic structure
Binbin Zhou, Kowloon (HK); Junda Shen, Kowloon (HK); Yang Yang Li, Kowloon (HK); and Jian Lu, Kowloon (HK)
Assigned to City University of Hong Kong, Kowloon (HK)
Filed by City University of Hong Kong, Kowloon (HK)
Filed on Jul. 25, 2019, as Appl. No. 16/521,687.
Prior Publication US 2021/0025072 A1, Jan. 28, 2021
Int. Cl. C25F 3/02 (2006.01); C25D 5/34 (2006.01); C25D 3/46 (2006.01); G01N 21/65 (2006.01); C25D 7/06 (2006.01); C25D 5/18 (2006.01)
CPC C25F 3/02 (2013.01) [C25D 3/46 (2013.01); C25D 5/18 (2013.01); C25D 5/34 (2013.01); C25D 7/0607 (2013.01); G01N 21/658 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for surface treatment of a metallic structure, comprising the steps of:
defining a first surface morphology on a surface of the metallic structure using a first surface treatment process; and
manipulating the surface using a second surface treatment process to transform the first surface morphology to a second surface morphology;
wherein the metallic structure is substantially made of a first metallic material and includes an impurity different from the first metallic material, the impurity facilitating a formation of the first surface morphology;
wherein the first surface treatment process includes using a selective etchant to etch away at least some of the impurity to form an initial nanoscale structure prior to the use of the second surface treatment process; and
wherein the second surface treatment process includes performing at least one cycle of depositing the first metallic material on the surface of the metallic structure and etching away at least some of the first metallic material from the metallic structure.