| Bullet-resistant Al2O3 ceramics play an important role in the field of protective armor because of its high hardness, low density and low cost. In this paper, the raw material selection, preparation technology and development trend of ballistic-resistant Al2O3 ceramics are reviewed in detail. The influences of dry pressing molding, isostatic pressing molding, gel injection molding and powder microinjection molding on ballistic-resistant Al2O3 ceramic molding are compared, and the influences of sintering processes such as atmospheric sintering, hot pressing, hot isostatic pressing sintering on ballistic-resistant Al2O3 ceramic properties are summarized. This paper expounds the development of ballistic-resistant Al2O3 transparent ceramics to meet the contemporary military needs, and the toughening of ballistic-resistant Al2O3 ceramics to overcome the application barrier of high brittleness and low toughness, which provides the possibility for more applications of ballistic-resistant Al2O3 ceramics. |
