|About this Abstract
||Materials Science & Technology 2019
||Sintering and Related Powder Processing Science and Technologies
||Production and Characterization of AlON Ceramics with Different Amount of MgO Addition via Reactive Spark Plasma Sintering
||Demet Aydogmus, Tugce Dedeagacli, Gultekin Goller, Onuralp Yucel, Filiz Sahin
|On-Site Speaker (Planned)
Excellent mechanical and optical properties of aluminum oxynitride (AlON) transparent ceramics make them desirable for a wide range of applications such as abrasives, armour materials and missile domes. In recent years, various methods have been applied to obtain AlON ceramics including pressureless sintering, hot pressing and hot isostatic pressing. Among these methods, spark plasma sintering (SPS) method has attracted attention by allowing the rapid compaction of highly dense ceramics at relatively lower temperatures with shorter holding times compared to conventional methods. In this study, transparent γ-AlON ceramics were produced by reactive spark plasma sintering by using Al2O3 and AlN as starting powders with a composition of 64.3 mol% and 35.7 mol%, respectively. MgO was used as an additive in different amounts (0.1 to 0.5 wt.%) and the effect of MgO addition, sintering parameters on the densification, AlON formation, mechanical properties and transparency of AlON ceramics were investigated.
||Definite: At-meeting proceedings