Al2O3 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˚C indicated a hydrophilic property against water and excellent permeability against a visible ray.

• 유정환 | Yu, Jeong-Hwan
• 정승화 | 정승화
• 조범래 | 조범래
• 홍경표 | 홍경표
• 문종수 | 문종수
• 강종봉 | 강종봉