Premium
Improved Thermal Shock Performance of Sintered Mg–Partially Stabilized Zirconia with Alumina and Titania Additions
Author(s) -
Kratschmer Tim,
Aneziris Christos G.
Publication year - 2011
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2009.02459.x
Subject(s) - materials science , microstructure , cubic zirconia , thermal shock , spinel , sintering , kinetics , chemical engineering , duplex (building) , metallurgy , composite material , ceramic , chemistry , physics , engineering , dna , biochemistry , quantum mechanics
This paper examines the microstructure of sintered magnesia partially stabilized zirconia (Mg–PSZ) with alumina and titania additions. Two effects are mainly responsible for enhanced thermal shock performance, microcrack generation by zirconia destabilization and in situ spinel formation as well as development of a duplex microstructure within the zirconia matrix. The duplex microstructure formation is controlled by the sintering kinetics as a function of the MgO concentration and the spinel formation. Titania additions, thereby, improve the sintering kinetics remarkably.