Wettability Characteristics of Laser Surface Textured Plasma Sprayed TiO2/ZnO Coatings

Surface wettability behaviour is generally categorised as hydrophobic and hydrophilic depending on the contact angle value. Surface wettability has been attracting considerable attention in research due to its unique behaviour in the field of self-cleaning, anti-fouling and anti-corrosion. Surfaces...

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Autores principales:	Yusliza Yusuf, Mariyam Jameelah Ghazali, Yuichi Otsuka, Sarita Morakul, Susumu Nakamura, Kiyoshi Ohnuma, Mohd Fadzli Bin Abdollah
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2019
Materias:	laser surface texturing tio2/zno coating wettability self-cleaning Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/3d0d42c0823b4accb175788adde3e52e
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spelling	oai:doaj.org-article:3d0d42c0823b4accb175788adde3e52e2021-11-05T09:17:25ZWettability Characteristics of Laser Surface Textured Plasma Sprayed TiO2/ZnO Coatings1881-219810.2474/trol.14.279https://doaj.org/article/3d0d42c0823b4accb175788adde3e52e2019-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/14/5/14_279/_pdf/-char/enhttps://doaj.org/toc/1881-2198Surface wettability behaviour is generally categorised as hydrophobic and hydrophilic depending on the contact angle value. Surface wettability has been attracting considerable attention in research due to its unique behaviour in the field of self-cleaning, anti-fouling and anti-corrosion. Surfaces with high and low wettabilities can be fabricated using various methods, including chemical etching, anodisation and laser surface texturing. The present study investigated the effects of textured surfaces via laser surface texturing on the wettability properties of TiO2/ZnO coatings. TiO2/ZnO coating was selected due to its high photocatalytic activity, non-toxicity and low cost, which are essential properties for self-cleaning and anti-fouling applications. Picosecond laser ablation was used to produce micro- dimple textures on the coating surfaces. The wettability of the laser-textured surfaces was greatly reduced, achieving superhydrophilic properties with contact angle of 1.4° ± 2.42° for laser-textured TiO2 coating. On the other hand, coatings with ZnO compositions exhibited increased contact angles for both textured and non-textured surfaces. Moreover, no clear cut correlations between the surface roughness properties of non-textured and laser-textured TiO2/ZnO coatings and the surface wettability properties was observed. This finding provides new approaches in designing textured surface materials that can effectively increase the wettability properties for self-cleaning and anti-fouling applications.Yusliza YusufMariyam Jameelah GhazaliYuichi OtsukaSarita MorakulSusumu NakamuraKiyoshi OhnumaMohd Fadzli Bin AbdollahJapanese Society of Tribologistsarticlelaser surface texturingtio2/zno coatingwettabilityself-cleaningPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 14, Iss 5, Pp 279-284 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	laser surface texturing tio2/zno coating wettability self-cleaning Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	laser surface texturing tio2/zno coating wettability self-cleaning Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Yusliza Yusuf Mariyam Jameelah Ghazali Yuichi Otsuka Sarita Morakul Susumu Nakamura Kiyoshi Ohnuma Mohd Fadzli Bin Abdollah Wettability Characteristics of Laser Surface Textured Plasma Sprayed TiO2/ZnO Coatings
description	Surface wettability behaviour is generally categorised as hydrophobic and hydrophilic depending on the contact angle value. Surface wettability has been attracting considerable attention in research due to its unique behaviour in the field of self-cleaning, anti-fouling and anti-corrosion. Surfaces with high and low wettabilities can be fabricated using various methods, including chemical etching, anodisation and laser surface texturing. The present study investigated the effects of textured surfaces via laser surface texturing on the wettability properties of TiO2/ZnO coatings. TiO2/ZnO coating was selected due to its high photocatalytic activity, non-toxicity and low cost, which are essential properties for self-cleaning and anti-fouling applications. Picosecond laser ablation was used to produce micro- dimple textures on the coating surfaces. The wettability of the laser-textured surfaces was greatly reduced, achieving superhydrophilic properties with contact angle of 1.4° ± 2.42° for laser-textured TiO2 coating. On the other hand, coatings with ZnO compositions exhibited increased contact angles for both textured and non-textured surfaces. Moreover, no clear cut correlations between the surface roughness properties of non-textured and laser-textured TiO2/ZnO coatings and the surface wettability properties was observed. This finding provides new approaches in designing textured surface materials that can effectively increase the wettability properties for self-cleaning and anti-fouling applications.
format	article
author	Yusliza Yusuf Mariyam Jameelah Ghazali Yuichi Otsuka Sarita Morakul Susumu Nakamura Kiyoshi Ohnuma Mohd Fadzli Bin Abdollah
author_facet	Yusliza Yusuf Mariyam Jameelah Ghazali Yuichi Otsuka Sarita Morakul Susumu Nakamura Kiyoshi Ohnuma Mohd Fadzli Bin Abdollah
author_sort	Yusliza Yusuf
title	Wettability Characteristics of Laser Surface Textured Plasma Sprayed TiO2/ZnO Coatings
title_short	Wettability Characteristics of Laser Surface Textured Plasma Sprayed TiO2/ZnO Coatings
title_full	Wettability Characteristics of Laser Surface Textured Plasma Sprayed TiO2/ZnO Coatings
title_fullStr	Wettability Characteristics of Laser Surface Textured Plasma Sprayed TiO2/ZnO Coatings
title_full_unstemmed	Wettability Characteristics of Laser Surface Textured Plasma Sprayed TiO2/ZnO Coatings
title_sort	wettability characteristics of laser surface textured plasma sprayed tio2/zno coatings
publisher	Japanese Society of Tribologists
publishDate	2019
url	https://doaj.org/article/3d0d42c0823b4accb175788adde3e52e
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_version_	1718444403965558784

Wettability Characteristics of Laser Surface Textured Plasma Sprayed TiO2/ZnO Coatings

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