Mechanical properties of HAp–ZrO2 composites

Study of Microstructure at Different Sintering Temperatures of Alumina Reinforced Hydroxyapatite Bioceramic Composite

“…These micrographs reveal that good sintering is achieved even at 1050 o C, which increases at 1250 o C. However, at 1250 o C, irregular surface with bubble like structures is visible, which is indicator of decomposition of HAp (as confirmed through XRD given in Figure 18), as has also been reported in such previous work by other authors, mentioned in literature Figure 4 to Figure 6 do not show any cracks or pores within the specimen at lower temperature of 1050 o C . But at 1150 o C and 1250 o C well distributed network of pores is seen, which correlates well with decrease in strength of HAp at higher temperatures reported in other work [25][26][27]. Figure 12) also confirms dense core with pore size less than 2-3 μm in all the specimens.…”

An innovative technique to simply fabricate ZrO2–HA–TiO2 nanostructured layers

“…Such phase transformation, which results in existence of both types of zirconia, has a positive effect on the mechanical properties of the layers. It has been reported that zirconia-based materials exhibit exceptional toughness due to the martensitic transformation of between tetragonal and monoclinic ZrO 2 [64]. Due to the suggested temperature elevation, HA, which is stable at the temperatures below 1200 • C [64], also decomposes to ␣-TCP phases whose peak intensity increases with voltage.…”

Electrophoretic enhanced micro arc oxidation of ZrO2–HAp–TiO2 nanostructured porous layers

“…Such phase transformation, which results in existence of both types of zirconia, has a positive effect on the mechanical properties of the layers. It has been reported that zirconia-based materials exhibit exceptional toughness due to the martensitic transformation of between tetragonal and monoclinic ZrO 2 [66]. Formation of some minor phases is evident.…”