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Influence of surface roughness on the wetting angle

Published online by Cambridge University Press:  03 March 2011

X.B. Zhou  and
J.Th.M. De Hosson
X.B. Zhou
Affiliation:
Department of Applied Physics, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
J.Th.M. De Hosson
Affiliation:
Department of Applied Physics, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Abstract

A this paper the influence of surface roughness on contact angles in the system of liquid Al wetting solid surfaces of Al2O3 has been studied. It was observed that contact angles of liquid Al vary significantly on different rough surfaces of Al2O3. A model is proposed to correlate contact angles with conventional roughness measurements and wavelengths by assuming a cosine profile of rough grooves with a Gaussian distribution of amplitudes. In comparison with the experimental results, the model provides a good estimate for describing the influence of surface roughness on contact angles of liquid Al on Al2O3.

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Articles
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Journal of Materials Research , Volume 10 , Issue 8 , August 1995 , pp. 1984 - 1992
Copyright
Copyright © Materials Research Society 1995

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References

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