INVESTIGATION OF THE GRANULOMETRIC COMPOSITION AND STRUCTURE OF AlN AND SI3N4 POWDERS AFTER HYDROGEN– THERMAL TREATMENT.

Autor: Skorokhod, V. V., MOROZOV, I. A., MOROZOVA, R. A., ITSENKO, A. I., OLEYNIK, G. S., DUBOVIK, T. V., ROGOZINSKIJ, A. A., ROGOZINSKAYA, A. A., LYCHKO, V. V.
Zdroj: Carbon Nanomaterials in Clean Energy Hydrogen Systems; 2009, p827-830, 4p
Abstrakt: A principle new approach to the non-metal nitride powders activation is proposed in this paper. This approach consists in hydrogen-thermal treatment (HTT) of precursor non-metal nitrides powders at 500–1,150°C in presence of hydrogen and catalysts. The goal of hydrogen-thermal treatment of powders is to extract the irrelevant impurities, to grind the powder particles and to improve the powder structure. Evolution of AlN and Si3N4 powders structure in HTT at different temperatures (500–1,150°C) has been studied. HTT of non-metal nitrides powders was shown to favour the removal of sorbed impurities from the particle surface and to decrease in starting temperature of powder sintering [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index