Conferences

Low-Temperature Synthesis of α-Al2O3

 
A.Shevchenko,
   
L.Lopato
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2008, #07/08
http://www.materials.kiev.ua/article/1334

Abstract

The paper considers the production of nanocrystalline α-Al2O3 powder at a temperature below 900 °C. It is shown that α-Al2O3 forms after high-temperature treatment of aluminum nitrate mixed with a mineralizer at 650 °С (holding time 6 h). The primary particles of α-Al2O3 are 25 to 30 nm in size and the specific surface area is 15.2 m2/g. The powder is used to produce self-reinforced composites in the ZrO2–Y2O3–CeО2–Al2O3 system.


ALUMINA, NANOCRYSTALLINE POWDER, SELF-REINFORCED COMPOSITE, ZRO2–Y2O3–CEО2–AL2O3 SYSTEM