Effect of BaTiO3 addition on structures and mechanical properties of 3Y-TZP ceramics

The Effects of Spark-Plasma Sintering (SPS) on the Microstructure and Mechanical Properties of BaTiO3/3Y-TZP Composites

“…Chen et al [20] prepared a Sr 2 Nb 2 O 7 /3Y-TZP composite and found that the fracture toughness was significant higher than that of 3Y-TZP, as high as 13 MPa·m 1/2 . However, Yang et al [21] found that the addition of BaTiO 3 suppressed the effect of the transformation toughening of 3Y-TZP, and the fracture toughness decreased instead of increased. Moreover, it has been proven that the electrical charges have a positive effect on the growth and differentiation of osteoblast cells, resulting from preferential adsorption of ions and proteins onto the polarized surfaces [22,23].…”

Microstructure and Mechanical Properties of Piezoelectric Materials Toughening Multi-walled Carbon Nanotubes/Hydroxyapatite Biocomposites

“…(2) When a crack expands to a LiNbO 3 grain, the piezoelectric LiNbO 3 will transform part of the fracture energy into electrical energy, and domain movement may be induced in the LiNbO 3 grain to further dissipate the fracture energy. Such a process is called ''piezoelectric energy dissipation toughening mechanism'' [3][4][5][6][7][8][9][10][11]. (3) LiNbO 3 partially reacts with HAp to form CaNb 2 O 6 , which belongs to central symmetric point groups, and possesses no piezoelectric effect.…”

“…When a crack propagates in the composite, a part of fracture energy, will be transformed into electrical energy or dissipated by a stress-induced domain movement, leading to an enhanced fracture resistance [3,4]. This approach has been successfully applied in various composite systems: Nd 2 Ti 2 O 7 /Al 2 O 3 [4], BaTiO 3 /3Y-TZP [5], Sr 2 Nb 2 O 7 /3Y-TZP [6], Nd 2 Ti 2 O 7 /8Y-FSZ [7], LiTaO 3 / Al 2 O 3 [8], BaTiO 3 /MgO [9], BaTiO 3 /La 2 Zr 2 O 7 [10], and PZT/glass [11]. As compared with traditional toughening methods, the piezoelectric toughening method not only can enhance the mechanical properties, but also introduces novel electrical properties into the toughened ceramics.…”

Toughening of Glass by a Piezoelectric Secondary Phase

“…Systems that have been investigated include alumina matrixes with BaTiO 3 , Nd 2 Ti 2 O 7 , and LiTaO 3 inclusions 8 -10 and yttrium-stabilized ZrO 2 (YSZ) matrixes with BaTiO 3 and Sr 2 Nb 2 O 7 inclusions. 11,12 In their first paper on the subject, Chen and Yang 8 achieved fracture toughness (K Ic ) values of 5.1 MPa⅐m 1/2 in ceramics with a composition of 0.05BaTiO 3 / 0.95Al 2 O 3 . Fracture toughness increments of Ͼ50% were achieved via the addition of 3 mol% of Nd 2 Ti 2 O 7 to alumina 9 and 2 mol% of Sr 2 Nb 2 O 7 to YSZ.…”

“…11 However, the combination of YSZ and BaTiO 3 was not successful, because the presence of the piezoelectric particles obstructed the tetragonal-to-monoclinic transformation in the zirconia matrix and, thus, suppressed the effect of transformation toughening. 12 Recently, the beneficial effect of a low concentration of Nd 2 Ti 2 O 7 (3 mol%) on the thermal shock resistance of alumina has been demonstrated. 13 A review of the available literature reveals that the toughening of glass matrixes via the piezoelectric effect has not been explored until now.…”