Alumina toughened zirconia reinforced with equiaxed and elongated lanthanum hexa-aluminate precipitates

Tough and damage-tolerant monolithic zirconia ceramics with transformation-induced plasticity by grain-boundary segregation

“…During the past decades, research has focused on increasing the Ce-TZP strength by developing composite materials [18][19][20]. This is commonly done by adding an immiscible second phase, mostly alumina, to decrease the zirconia-grain size [18][19][20][21][22][23] and/or by introducing a second toughening phase with a high aspect ratio like elongated aluminate phases [24][25][26][27][28][29]. Although an improved strength, comparable to that of Y-TZP (~1 GPa), has been widely reported for Ce-TZP-based composites with various microstructures [20,21,27,[30][31][32][33], most of the developed composites are of brittle nature.…”

“…Furthermore, the manufacturing of composite materials generally requires a complex microstructure tailoring (grain-size control of all phases, nature of the second phase, inter/intragranular secondary phases with different geometries, etc. [18,24,26,28,[35][36][37][38]).…”

Low-temperature and flexible strategy to in-situ fabricate ZrSiO 4-based ceramic composites via doping and tuning solid-state reaction

“…Hudelja et al, reported that in situ graphitization of nanocellulose during the spark plasma sintering resulted in the formation of thin turbostratic graphite layers homogeneously covering the ZrO2 grains [2]. Li et al prepared alumina-toughened-zirconia composites reinforced by elongated lanthanum hexa-aluminate that was in-situ formed during sintering [11]. The uniformly dispersed lanthanum hexa-aluminate significantly enhanced the fracture resistance of the composites.…”

UV‐Curing Assisted Direct Ink Writing of Dense, Crack‐Free, and High‐Performance Zirconia‐Based Composites With Aligned Alumina Platelets

“…This ATZ composition was formulated based on previous research, [36] but with alumina platelets addition aiming to further improve crack resistance. [37][38][39] The platelet addition of 3 wt% was decided according to our pilot study showing that the addition of > 3 wt% alumina platelets resulted in inter-platelet bridging and a reduced sintered density (Figure S2, Supporting Information). Here, we particularly explored the potential of platelet alignment by DIW.…”