Sintering of 3 mol % Y2O3-TZP and its fracture after ageing treatment

San-Yuan Chen*, Hong Yang Lu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

TZP ceramic of 99.7% theoretical relative final density was obtained by pressureless sintering a commercial co-precipitated 3 mol % Y2O3-ZrO2 powder at 1400° C for 10 h. Fracture surfaces of the aged material revealed that the fracture of TZP ceramic was typified by an intergranular mode in areas where the phase was mainly tetragonal, whereas the transgranular mode was found predominantly in the area containing more monoclinic phase. Microcracks induced by the (t) → (m) transformation provided short paths for water to accelerate the property degradation of TZP upon low-temperature ageing in a humid atmosphere.

Original languageEnglish
Pages (from-to)1195-1200
Number of pages6
JournalJournal of Materials Science
Volume23
Issue number4
DOIs
StatePublished - 1 Apr 1988

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