Wetting behaviors of water droplet on rough metal substrates

DOI

10.2991/ismems-16.2016.58How to use a DOI?

Keywords

Wetting behavior, Roughness, Metal, Static contact angle

Abstract

In this paper, an experimental investigation of wetting behaviors of water droplet on rough metal substrates is presented, in order to study the influence of rough structures on contact angles of metal substrates. The static contact angles and contact angles evolution over time are measured with a video contact angle analyzer. The results show that the hydrophobic property increases with increase of surface roughness. The contact angle increases from 76.8øto 86.7øwith increasing mean roughness from 1.435 m to 5.591 m. The surface with large aspect ratio displays larger contact angle than surface with low aspect ratio. The apparent decrease of the variation of contact angle as a linear variation with the time changing, the droplet spreads on flat substrates with low roughness slowly. Compare with Cassie state, Wenzel wetting state is more sensitive to the change of surface roughness. It may be expected to use the reasonable lapping process and parameters to control the static contact angle of water droplets on the metal surfaces.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jing Xu
AU  - Bin Li
AU  - Jiadi Lian
AU  - Jing Ni
AU  - Jing Xiao
PY  - 2016/12
DA  - 2016/12
TI  - Wetting behaviors of water droplet on rough metal substrates
BT  - Proceedings of the International Symposium on Mechanical Engineering and Material Science
PB  - Atlantis Press
SP  - 341
EP  - 345
SN  - 2352-5401
UR  - https://doi.org/10.2991/ismems-16.2016.58
DO  - 10.2991/ismems-16.2016.58
ID  - Xu2016/12
ER  -