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CC BY V4.0, Open Access
Dissertation
Surface Morphology and Durability of Nanosecond Laser Textured Hydrophobic Austenitic Stainless Steel
Washington State University
Doctor of Philosophy (PhD), Washington State University
01/2022
DOI:
https://doi.org/10.7273/000004403
Handle:
https://hdl.handle.net/2376/124489
Abstract
This work reports on the modification of austenitic stainless steel by nanosecond laser treatment to develop hydrophobic properties. Hydrophobic properties of steels are desirable for use in the nuclear industry where contamination prevention is a need during service. After laser etching, samples were ultrasonically cleaned in sulfuric acid and heat treated to significantly decrease transition time from hydrophilic to hydrophobic behavior. The effect of the scan line laser power and frequency on surface wettability of nanosecond laser textured surfaces were investigated on austenitic stainless steel grades 304, 310, and 316. Water contact angle, surface profilometry, scanning electron microscopy, and elemental analysis were used to probe the nature of the hydrophobic surface and the influence of laser etching parameters, surface roughness, elemental composition, oxide growth, and environmental conditions. . The durability of the treated samples against radiation, corrosion, and abrasion was also investigated. The results showed that hydrophobicity can be induced without major sacrifices in material properties using the nanosecond laser etching process.
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Details
- Title
- Surface Morphology and Durability of Nanosecond Laser Textured Hydrophobic Austenitic Stainless Steel
- Creators
- Douglas Reid
- Contributors
- Charles Pezeshki (Advisor)Amit Bandyopadhyay (Committee Member)John McCloy (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Mechanical and Materials Engineering, School of
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Publisher
- Washington State University
- Number of pages
- 114
- Identifiers
- 99900883237601842
- Language
- English
- Resource Type
- Dissertation