| 摘要 |
<p>The object of invention is a procedure of protection of aluminium nitride AlN powder from decomposition, i.e. from hydrolysis in a moistening atmosphere or in a water medium. The procedure of protection of aluminium nitride AlN powder from hydrolysis is specific that in the aqueous solution of orthosilicic acis or some other silicic acid or in water soluble salts of the concentration of 1x10-3 up to 5x10-1 mole.dm-3 AlN powder of average particle size from 0,1 micrometer up to 1 mm is dispersed up to the mass percentage of 1 - 50, and in that during the dispersion, this suspension is not heated above the temperature of 85 degrees Celsius. In the case of dispersion by grinding, an organic or inorganic oxidant, typically H2O2 in the quantity of 0,01 up to 0,1 ml per gram of AlN powder is added to this suspension.</p> |
