The Preparation and Properties of Layered TCP/Y–TZP Composites with Ribbon-Like Microstructures

Tomaž Kosmač; Aleš Dakskobler

doi:10.4028/www.scientific.net/KEM.309-311.1145

Paper Titles

Syntheses of Silicon-Containing Apatite Fibres by a Homogeneous Precipitation Method and Their Characterization
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A Histological Evaluation of Novel Cyanoacrylate-Based β-TCP Composite in Rat Calvarial Defects
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Sintering Effect on Mechanical Properties of Composites of Enamel Derived Hydroxyapatite (EHA) and Titanium
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Densification of Zirconia–Hydroxyapatite Ceramics Without Phase Changes
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The Preparation and Properties of Layered TCP/Y–TZP Composites with Ribbon-Like Microstructures
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Wollastonite-Poly(Ethylmethacrylate-Co-Vinylpyrrolydone) Nanostructured Materials: Mechanical Properties and Biocompatibility
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Bioactive Organic-Inorganic Hybrids Prepared from Poly(Vinyl Alcohol) via Modification with Metal Oxides and Calcium Salt
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Bioactive Calcium Phosphate Material for Dental Endodontic Treatment. Root Apical Deposition.
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Biocompatibility of CaSiO₃ /High-Density Polyethylene Composites Prepared by Hot-Pressing
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The Preparation and Properties of Layered TCP/Y–TZP Composites with Ribbon-Like Microstructures

Abstract:

The repeated-deformation processing technique was used in the preparation of layered tricalcium phosphate (TCP)/yttria partially stabilized tetragonal zirconia (Y-TZP) composites with ribbon-like microstructures. The fabrication technique involved repeated plastic deformation of layered green tapes, which are stacked together to form starting bi-material laminates, burn-out of the organic vehicle, and sintering at 1300°C. At this rather low sintering temperature, which was chosen to prevent the extensive diffusion of the calcium into the Y-TZP, the zirconia layers could not be fully densified. In spite of the relatively low fractional density (about 75% TD) of these layers, flexural strength values exceeding 100 MPa were achieved with these composites, 150% higher than the matrix material. During autoclaving in water at 200oC for 24 hours no t-m transformation of the zirconia phase took place, indicating full stability of the porous zirconia layers in these composites under the hydrothermal conditions used in this study.