25. Al2O3 and SiO2 Coatings for Improving the Wear Resistance of Glass Panes
- Dongming Zhu and
- Kevin Plucknett
Published Online: 26 MAR 2008
Copyright © 2005 The American Ceramics Society
Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3
How to Cite
Fehringer, G. and Clasen, R. (2005) Al2O3 and SiO2 Coatings for Improving the Wear Resistance of Glass Panes, in Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3 (eds D. Zhu and K. Plucknett), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291238.ch25
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 2005
Print ISBN: 9781574982336
Online ISBN: 9780470291238
The application of glass panes is limited in many cases due to a low wear resistance. One possibility to improve wear resistance is to protect the surface with a coating. The aim of this work is the formation of transparent SiO2 or A12O3 coatings. Thick crack free coatings of about 5 to 10 μm are made in order to increase the durability under frictional conditions.
Solid content, pH value of the suspensions and the amount of binding agent are varied aiming to improve the thickness of the coatings. Another factor influencing the formation of the coating is the withdrawal velocity of the substrates during dip-coating.
Since the sintering temperatures of the coatings are above the melting temperature of the substrates, sintering techniques like laser sintering must be applied. The sintering behavior is examined by variation of the laser parameters such as power density.
The thickness of the layers, which depends on the suspension and dip-coating parameters, is measured with a profilometer. The green and sintered layers were investigated by HR-SEM (high resolution scanning electron microscope). The crystal phase of the A12O3 coatings were analyzed by XRD. The wear resistances of the coatings were determined and compared with the properties of the glass substrates by tribometer tests.