The sintering-temperature-related microstructure and phase assemblage of alumina-doped and alumina–silica-co-doped 3-mol%-yttria-stabilized tetragonal zirconia. (August 2015)

• Record Type: Journal Article
• Authors: Samodurova, Anastasia; Vengust, Damjan; Kocjan, Andraž; Kosmač, Tomaž
• Is Part Of: Scripta materialia. Volume 105(2015)
• Page Start: 50
• Page End: 53
• Publication Date: 2015-08
• Subjects: Zirconia -- Bioceramics -- Sintering -- Low temperature degradation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.04.031
• Languages: English
• ISSNs: 1359-6462

Abstract

Graphical abstract: Abstract : The influence of higher sintering temperatures on the microstructure and equilibration of alumina-doped and alumina–silica-co-doped 3-mol%-yttria-stabilized tetragonal zirconia ceramics was investigated. The temperature-related (⩾1550 °C) penetration of the silica phase from the grain junctions into the grain boundaries was accompanied by the emergence of a fraction of larger, heterogeneous grains. The overall partitioning process was slower in the co-doped material, increasing the resistance to ageing, while upon cooling the partitioned yttria-rich phase was found to be tetragonal ( t′ -ZrO2 ).