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A facile approach to fabricate a stable superhydrophobic film with switchable water adhesion on titanium surface.
- Source :
-
Surface & Coatings Technology . Jan2014, Vol. 239, p227-232. 6p. - Publication Year :
- 2014
-
Abstract
- A simple process of thermal oxidation and self-assembly modification was developed to fabricate a stable superhydrophobic film with controllable adhesion on titanium surface. Pure titanium plate was first heat treated in atmospheric environment at 900°C, 1000°C and 1100°C respectively for a certain time, then air cooled. The subsequent air-cooling process separated the flaky yellow oxide layer formed on titanium plate during the oxidation from the substrate and a rough titanium oxide surface with micrometer and nanometer-scale hierarchical structures was obtained. The following immersion process in N-octadecyltrichlorosilane solution endowed the surface with excellent water repellence, raised its contact angle up to 166° and reduced its slide angle as low as 2°. What's more, by controlling heat temperature and time, the surface's superhydrophobicity switched from sticky state to sliding state. Field-emission scanning electron microscopy (FE-SEM) and contact angle measurement were used to characterize the morphological features and wettability of the as-prepared surface respectively. Immersion test in corrosive liquids and abrasion test with sandpaper have a further exhibition of its chemical stability and mechanical durability. The result is meaningful to a wider range of future applications of superhydrophobic titanium surface in industry and real life. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02578972
- Volume :
- 239
- Database :
- Academic Search Index
- Journal :
- Surface & Coatings Technology
- Publication Type :
- Academic Journal
- Accession number :
- 93699728
- Full Text :
- https://doi.org/10.1016/j.surfcoat.2013.11.047