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http://dx.doi.org/10.3740/MRSK.2008.18.8.417

Fabrication and Characterization of Alumina Sol for Coating by a Method of the Mechanical Milling  

Yu, Jeong-Hwan (Department of Materials Science and Engineering, Kyungnam University)
Jung, Seung-Hwa (Department of Materials Science and Engineering, Kyungnam University)
Jo, Bum-Rae (Department of Materials Science and Engineering, Keimyung University)
Hong, Gyung-Pyo (Component Materials Research institute, Cenotec Co. Ltd., Kyungnam University)
Mun, Jong-Soo (Department of Materials Science and Engineering, Kyungnam University)
Kang, Jong-Bong (Department of Materials Science and Engineering, Kyungnam University)
Publication Information
Korean Journal of Materials Research / v.18, no.8, 2008 , pp. 417-421 More about this Journal
Abstract
$Al_2O_3$ sol with long-term stability was prepared by mechanical milling. Thin films were evaluated and created for use as coating materials. The particle size of the manufactured sol was 98 nm when 2 wt% of nitric acid was added. This indicates that the viscosity of the sol is 12 cps and that it has long-term stability. The thickness of the thin films, which varied from 100 nm to 500 nm, could be managed by adjusting the draw rate and the amount of an organic additive. A thin film heated to $500^{\circ}C$ indicated a hydrophilic property against water and excellent permeability against a visible ray.
Keywords
$Al_2O_3$ sol; ceramic coating;
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