| 摘要 |
The mechanical and thermal properties of aluminium oxides were improved by treating with a hydrozable Si compd. Aluminium oxides were dipped in Si compd. and heated in an inert atmosphere for reaction with Si compd. The products and excess Si compd. were removed by vaporization. The residual Si compd. was hydrolyzed by water vapor, and the hydrolyzed products in the vapor phase were removed.
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