Effect of Sintering Condition, Sandblasting and Heat Treatment on Biaxial Flexure Strength of Zirconia

Seiji Ban; Hideo Sato; Y. Suehiro; H. Nakanishi; Masahiro Nawa

doi:10.4028/www.scientific.net/KEM.361-363.779

Paper Titles

Kinetic of the Phase Transformation of ATZ Compared to Biograde Y-TZP
p.763

Phase Stability and Fracture Toughness of Zirconia Toughened Alumina for Joint Replacement
p.767

Investigation of Aged Dispersion Ceramics by Means of Hip Simulator
p.771

Nanozirconia Partially Coated MWNT: Nanostructural Characterization and Cytotoxicity and Lixivation Study
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Effect of Sintering Condition, Sandblasting and Heat Treatment on Biaxial Flexure Strength of Zirconia
p.779

Environmental Phase Stability of Ceramics Composite for Hip Prostheses in Presence of Surface Damage
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The Reactivity of CaTi₄(PO₄)₆ with Alumina and Y-TZP Ceramics
p.787

Durability of Zirconia-Based Ceramics and Composites for Total Hip Replacement
p.791

Effect of Different Stabilizer Addition on Preparation and Hydrothermal Stability of ZrO₂-TiN Composites with Varying TiN Content
p.795

HomeKey Engineering MaterialsKey Engineering Materials Vols. 361-363Effect of Sintering Condition, Sandblasting and...

Effect of Sintering Condition, Sandblasting and Heat Treatment on Biaxial Flexure Strength of Zirconia

Abstract:

The effect of sintering condition, sandblasting and heat treatment on biaxial flexure strengths of the zirconia/ alumina nanocomposite stabilized with cerium oxide (Ce-TZP/Al2O3 nanocomposite, referred to NANOZR) was evaluated in comparison to that of yttria stabilized tetragonal zirconia polycrystals (Y-TZP). The disc-shaped specimens of NANOZR and Y-TZP were cut from the full-sintered or middle-sintered ones. The discs cut from the middle-sintered ones were finally sintered at the same temperature for the full-sintered one. These four kinds of disc were treated in various conditions combined with the sandblasting, the heat treatment, and the storage. The biaxial flexure strength of both middle- and full-sintered Y-TZP decreased with the autoclaving, whereas those of both NANOZR did not change with it. The monoclinic content of both the materials increased with the sandblasting and decreased with the heat treatment. Regardless of the sintering condition, the monoclinic content of the Y-TZP dramatically increased with the autoclaving and those of NANOZR remarkably increased with the sandblasting. Regardless of the different surface roughness, the biaxial flexure strengths of both materials strongly depended on the content of monoclinic ZrO2 on the surface.