Evaluation of 1.5 mol% yttria – 1.5 mol% gadolinia stabilized tetragonal zirconia polycrystals derived from solid state synthesis and laser vaporation
Year: 2025
Type: article
Abstract: Variation of stabilizer composition and amount offers the opportunity to tailor the mechanical properties of tetragonal zirconia polycrystals. In this study, zirconia stabilized with 1.5 mol% yttria and 1.5 mol% gadolinia was prepared by co-milling zirconia with yttria and gadolinia stabilizer oxides. A laser vaporized powder was derived from this starting powder. The two powders were subsequently consolidated into bulk ceramics by hot pressing at 1300–1450 °C sintering temperature and 60 MPa pressure. Tetragonal zirconia polycrystals obtained from the different powder technology processes differ considerably in phase composition, microstructure and mechanical properties. The laser vaporized derived materials are predominantly tetragonal, hard and combine high strength with a moderate toughness. The solid state synthesized materials show a transition to higher hardness and strength and lower fracture resistance with increasing sintering temperature, which can be correlated to the changes in phase composition and microstructure. • Synthesis route of YGd-TZP powder affects mechanical properties and microstructure
Institutions: University of Stuttgart, Friedrich Schiller University Jena
Language: English
Subfield: Ceramics and Composites
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,900
OpenAlex ID: W4408251357