Effects of Cr2O3 addition on the mechanical properties, microstructure and wear performance of zirconia-toughened-alumina (ZTA) cutting inserts

► Effects of Cr2O3 addition on the ZTA systems were investigated. ► Small additions of Cr2O3 lead to improved mechanical properties. ► Wear performance of ZTA-Cr2O3 cutting insert improved with additions of Cr2O3.