US 12,103,109 B2
Nanosecond laser ablation and chemical thermal decomposition combined method for preparing super-hydrophobic micro-nano structure on stainless steel surfaces
Yukui Cai, Jinan (CN); Zhanqiang Liu, Jinan (CN); Xichun Luo, Jinan (CN); Yi Wan, Jinan (CN); Qinghua Song, Jinan (CN); Bing Wang, Jinan (CN); and Yiping Tang, Jinan (CN)
Assigned to SHANDONG UNIVERSITY, Jinan (CN)
Appl. No. 17/254,325
Filed by SHANDONG UNIVERSITY, Shandong (CN)
PCT Filed Dec. 28, 2019, PCT No. PCT/CN2019/129540
§ 371(c)(1), (2) Date Dec. 21, 2020,
PCT Pub. No. WO2021/082262, PCT Pub. Date May 6, 2021.
Claims priority of application No. 201911063359.2 (CN), filed on Oct. 31, 2019.
Prior Publication US 2021/0370443 A1, Dec. 2, 2021
Int. Cl. B23K 26/352 (2014.01); B05D 3/10 (2006.01); B23K 26/36 (2014.01); B23K 103/04 (2006.01); B82Y 30/00 (2011.01)
CPC B23K 26/352 (2015.10) [B05D 3/102 (2013.01); B23K 26/36 (2013.01); B23K 2103/05 (2018.08); B82Y 30/00 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A nanosecond laser ablation and chemical thermal decomposition combined method for preparing a super-hydrophobic micro-nano structure on stainless steel surfaces, comprising:
pretreating stainless steel;
performing laser ablation on the pretreated stainless steel to form a micro-nano structure;
depositing stearic acid micro-nano particles on the micro-nano structure;
performing secondary laser ablation to decompose the stearic acid; and
preforming after-treatment;
wherein the depositing of stearic acid micro-nano particles comprises: ultrasonically atomizing a stearic acid ethanol solution, evenly coating a surface of the workpiece with a layer of micro-droplets of the stearic acid ethanol solution, evaporating the ethanol, and depositing the stearic acid micro-nano particles on the surface of the micro-nano structure.