	US 11,939,679 B2
	Method for preparing an anticorrosive surface layer of a metal material in a marine environment by laser
Wenqing Shi, Zhanjiang (CN); Fenju An, Zhanjiang (CN); Jiang Huang, Zhanjiang (CN); Yuping Xie, Zhanjiang (CN); Zhanxia Wu, Zhanjiang (CN); Zhigang Liang, Zhanjiang (CN); Jinming Zhan, Zhanjiang (CN); Jinyu Huang, Zhanjiang (CN); and Yi Ba, Zhanjiang (CN)
Assigned to GUANGDONG OCEAN UNIVERSITY, Zhanjiang (CN)
Appl. No. 17/262,952
Filed by Guangdong Ocean University, Zhanjiang (CN)
PCT Filed Aug. 12, 2020, PCT No. PCT/CN2020/108661 § 371(c)(1), (2) Date Jan. 25, 2021, PCT Pub. No. WO2021/179533, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 202010154137.8 (CN), filed on Mar. 7, 2020.
Prior Publication US 2022/0402581 A1, Dec. 22, 2022
Int. Cl. C23C 24/10 (2006.01); B23K 26/082 (2014.01); B23K 26/342 (2014.01); B23K 26/352 (2014.01); B23K 103/04 (2006.01); B63B 59/04 (2006.01); B23K 103/06 (2006.01)

CPC C23C 24/106 (2013.01) [B23K 26/082 (2015.10); B23K 26/342 (2015.10); B23K 26/355 (2018.08); B23K 26/3576 (2018.08); B63B 59/04 (2013.01); B23K 2103/04 (2018.08); B23K 2103/06 (2018.08)]

8 Claims

1. A method for preparing an anticorrosive surface layer of a metal material in a marine environment by laser, which is characterized in that it comprises the following steps:

(Step 1) a laser cladding technology is used to prepare a cladding surface layer on the surface of metal material, wherein the metal material is pretreated and dried, and the laser is combined with a coaxial powder feeding method to melt a cladding material and the surface layer of the metal material at the same time, and the cladding surface layer is obtained on the surface of the metal material;

(Step 2) an ultrafast laser processing technology is used to prepare a hydrophobic surface on the cladding surface, wherein the ultrafast laser is selected from picosecond laser or femtosecond laser, and he a pulse width is less than 10-11s.