Cargando…

Femtosecond Laser Fabrication of Stable Hydrophilic and Anti-Corrosive Steel Surfaces

We report on a novel single-step method to develop steel surfaces with permanent highly hydrophilic and anti-corrosive properties, without employing any chemical coating. It is based on the femtosecond (fs) laser processing in a saturated background gas atmosphere. It is particularly shown that the...

Descripción completa

Detalles Bibliográficos
Autores principales: Lanara, Christina, Mimidis, Alexandros, Stratakis, Emmanuel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6829529/
https://www.ncbi.nlm.nih.gov/pubmed/31635175
http://dx.doi.org/10.3390/ma12203428
_version_ 1783465577713500160
author Lanara, Christina
Mimidis, Alexandros
Stratakis, Emmanuel
author_facet Lanara, Christina
Mimidis, Alexandros
Stratakis, Emmanuel
author_sort Lanara, Christina
collection PubMed
description We report on a novel single-step method to develop steel surfaces with permanent highly hydrophilic and anti-corrosive properties, without employing any chemical coating. It is based on the femtosecond (fs) laser processing in a saturated background gas atmosphere. It is particularly shown that the fs laser microstructuring of steel in the presence of ammonia gas gives rise to pseudoperiodic arrays of microcones exhibiting highly hydrophilic properties, which are stable over time. This is in contrast to the conventional fs laser processing of steel in air, which always provides surfaces with progressively increasing hydrophobicity following irradiation. More importantly, the surfaces subjected to fs laser treatment in ammonia exhibit remarkable anti-corrosion properties, contrary to those processed in air, as well as untreated ones. The combination of two functionalities, namely hydrophilicity and corrosion resistance, together with the facile processing performed directly onto the steel surface, without the need to deposit any coating, opens the way for the laser-based production of high-performance steel components for a variety of applications, including mechanical parts, fluidic components and consumer products.
format Online
Article
Text
id pubmed-6829529
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-68295292019-11-18 Femtosecond Laser Fabrication of Stable Hydrophilic and Anti-Corrosive Steel Surfaces Lanara, Christina Mimidis, Alexandros Stratakis, Emmanuel Materials (Basel) Article We report on a novel single-step method to develop steel surfaces with permanent highly hydrophilic and anti-corrosive properties, without employing any chemical coating. It is based on the femtosecond (fs) laser processing in a saturated background gas atmosphere. It is particularly shown that the fs laser microstructuring of steel in the presence of ammonia gas gives rise to pseudoperiodic arrays of microcones exhibiting highly hydrophilic properties, which are stable over time. This is in contrast to the conventional fs laser processing of steel in air, which always provides surfaces with progressively increasing hydrophobicity following irradiation. More importantly, the surfaces subjected to fs laser treatment in ammonia exhibit remarkable anti-corrosion properties, contrary to those processed in air, as well as untreated ones. The combination of two functionalities, namely hydrophilicity and corrosion resistance, together with the facile processing performed directly onto the steel surface, without the need to deposit any coating, opens the way for the laser-based production of high-performance steel components for a variety of applications, including mechanical parts, fluidic components and consumer products. MDPI 2019-10-20 /pmc/articles/PMC6829529/ /pubmed/31635175 http://dx.doi.org/10.3390/ma12203428 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lanara, Christina
Mimidis, Alexandros
Stratakis, Emmanuel
Femtosecond Laser Fabrication of Stable Hydrophilic and Anti-Corrosive Steel Surfaces
title Femtosecond Laser Fabrication of Stable Hydrophilic and Anti-Corrosive Steel Surfaces
title_full Femtosecond Laser Fabrication of Stable Hydrophilic and Anti-Corrosive Steel Surfaces
title_fullStr Femtosecond Laser Fabrication of Stable Hydrophilic and Anti-Corrosive Steel Surfaces
title_full_unstemmed Femtosecond Laser Fabrication of Stable Hydrophilic and Anti-Corrosive Steel Surfaces
title_short Femtosecond Laser Fabrication of Stable Hydrophilic and Anti-Corrosive Steel Surfaces
title_sort femtosecond laser fabrication of stable hydrophilic and anti-corrosive steel surfaces
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6829529/
https://www.ncbi.nlm.nih.gov/pubmed/31635175
http://dx.doi.org/10.3390/ma12203428
work_keys_str_mv AT lanarachristina femtosecondlaserfabricationofstablehydrophilicandanticorrosivesteelsurfaces
AT mimidisalexandros femtosecondlaserfabricationofstablehydrophilicandanticorrosivesteelsurfaces
AT stratakisemmanuel femtosecondlaserfabricationofstablehydrophilicandanticorrosivesteelsurfaces