Fracture resistance behavior of alumina–zirconia composites

The relationship between microstructure and fracture toughness of zirconia toughened alumina (ZTA) added with MgO and CeO2

“…To overcome the brittleness, reinforcement such as YSZ is introduced into Al 2 O 3, producing zirconia toughened alumina (ZTA). YSZ increases the toughness by transforming the phase from ZrO 2(t) to ZrO 2(m) [5][6][7].…”

Effect of Al2O3/YSZ microstructures on wear and mechanical properties of cutting inserts

“…Due to the brittle nature of alumina itself, a second composition is introduced to increase the toughness of the cutting tools. Materials used as second composition are such as yttria stabilized zirconia (YSZ) [3,[6][7][8][9][10][11][12], whiskers silicon carbide [7,13], titanium carbide [6], molybdenum [14], titanium carbide [7], silver [8] and ceria [15]. By adding YSZ in alumina matrix, ZTA is produced as one family of * Corresponding author.…”

Physical properties of alumina/yttria-stabilized zirconia composites with improved microstructure

“…However, CSZ shows low fracture toughness, which can lead to crack formation thereby compromising the cell efficiency due to the combination of the reagent gases. To overcome this problem, alumina may be added to CSZ matrix enhancing the hardness, bending strength and fracture toughness of the ceramic [2][3][4]. Several publications in this subject reveal that the experimental results are still a controversial issue [5][6][7][8], although many recent reports have demonstrated the advantageous properties of zirconia-alumina composite solid electrolytes [9][10][11][12].…”