Microstructural and Electrical Features of Yttrium Stabilised Zirconia with ZnO as Sintering Additive

Sintering of zirconia pdf

Thermal runaway, flash sintering and asymmetrical microstructural development of ZnO and ZnO–Bi2O3 under direct currents

DC flash sintering of both pure and 0.5 mol.% Bi2O3-doped ZnO at a relatively high activating field of 300 V/cm has been investigated. It is demonstrated that even high-purity ZnO single crystals can “flash” at 870 C. In comparison, flash sintering occurs at a substantially lower onset temperature of 550 C in ZnO powder specimens, indicating the important roles of surfaces and/or grain boundari...

Phonon anharmonicity of monoclinic zirconia and yttrium-stabilized zirconia

C. W. Li,1,2,* H. L. Smith,2 T. Lan,2 J. L. Niedziela,3 J. A. Muñoz,2 J. B. Keith,2 L. Mauger,2 D. L. Abernathy,4 and B. Fultz2 1Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831, USA 2Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, California, 91125, USA 3Instrument and Source Division, Oak R...

Fabrication and characterisation of a calcium phosphate/zirconia composite

The aim of this study is to fabricate high strength calcium phosphate/ yttrium artially stabilised zirconia (Y-PSZ) composites using a simple powder pressing technique. Various compositions of hydroxyapatite and zirconia powder, ranging from 10 to 90 wt% Y-PSZ, were prepared using a wet mixing process. Ten compacts (13.5mm×3mm) were made for each composition, pressed and fired in air at sinte...

Sintering properties of zirconia-based ceramic composite

This study examines the effects of different ZrB2 content on various mechanical properties and electrical conductivity of ZrB2/Y-TZP composite. Composites with ZrB2 content of up to 20 wt-% were particularly beneficial at the lower sintering temperature range by achieving greater densification and better hardness than Y-TZP monolith. In contrast to the trends estimated from rule of mixture, the...