Sintering, microstructure and mechanical properties of commercial Y-TZPs

Characterization of (Nd,Y)-TZP ceramics prepared by a colloidal suspension coating technique

“…In recent years, other techniques were reported in which yttria is introduced by means of a coating on the zirconia particles. 4,5 The bending strength and fracture toughness of Y-TZP ceramics based on yttria-coated zirconia starting powder are reported 4 to be more attractive than those of ceramics based on coprecipitated powder, when sintered under the same conditions, and the excellent toughness of coated powder based Y-TZP is attributed to the inhomogeneous stabiliser distribution which results in ZrO 2 grains with a tetragonal shell around a monoclinic core. 4,5 The possibility of forming TZP ceramics by means of costabilising with low amounts of neodymia and yttria was recently reported.…”

“…4,5 The bending strength and fracture toughness of Y-TZP ceramics based on yttria-coated zirconia starting powder are reported 4 to be more attractive than those of ceramics based on coprecipitated powder, when sintered under the same conditions, and the excellent toughness of coated powder based Y-TZP is attributed to the inhomogeneous stabiliser distribution which results in ZrO 2 grains with a tetragonal shell around a monoclinic core. 4,5 The possibility of forming TZP ceramics by means of costabilising with low amounts of neodymia and yttria was recently reported. [6][7][8] In the present work, 0.5-2.0 mol% Nd 2 O 3 was added in combination with 1.5 mol% Y 2 O 3 in order to explore the fabrication of (Nd,Y)-TZP ceramics.…”

Yb2O3 and Y2O3 co-doped zirconia ceramics

“…11,12 In recent years, the stabiliser-coating technique has become more attractive, because Y 2 O 3 -stabilized ZrO 2 ceramics derived from Y 2 O 3 -coated starting powders show better mechanical properties than those fabricated from co-precipitated powders. 7,13,14 In the present study, Yb 2 O 3 was chosen as the secondary stabilizer to explore the fabrication of Yb 2 O 3 and Y 2 O 3 co-doped ZrO 2 ceramics. A stabiliser-coating route was employed to prepare the starting powders.…”

Novel Zirconia–Alumina Nanocomposites Combining High Strength and Toughness

“…Initially very small but highly transformable grains are present, this is only possible if a core/shell structure is assumed. [11] At longer dwell a second class of larger grains is formed which is more transformable due to their size. The critical grain size in NdY-TZP seems to be in the range around 0.5 mm.…”