Nanosecond laser ablation and chemical thermal decomposition combined method for preparing super-hydrophobic micro-nano structure on stainless steel surfaces
US12103109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2019 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Jun 26, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y30/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A nanosecond laser ablation and chemical thermal decomposition for preparing a super-hydrophobic micro-nano structure on stainless steel. The method solves the defects of long preparation cycle and complex process flow of a super-hydrophobic surface of stainless steel, and does not use fluorine-containing chemical reagents for modification. The method includes: ultrasonically cleaning a stainless steel sample piece in absolute ethanol and air-drying at room temperature; performing primary infrared nanosecond laser ablation on the sample piece to obtain a micro-nano structure; evenly coating a surface of the workpiece with micro-droplets of a stearic acid ethanol solution by using an ultrasonic atomizer; performing secondary infrared nanosecond laser ablation on the sample piece; and ultrasonically cleaning the sample piece with acetone, absolute ethanol, and deionized water respectively for 10 minutes to remove undecomposed stearic acid and slag, thereby obtaining a stainless steel super-hydrophobic surface with stable super-hydrophobic property and good quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.