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Effect of Grain Size on Mechanical Properties of Submicrometer 3Y‐TZP: Fracture Strength and Hydrothermal Degradation
Author(s) -
Eichler Jens,
Rödel Jürgen,
Eisele Ulrich,
Hoffman Mark
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01643.x
Subject(s) - materials science , fractography , hydrothermal circulation , grain size , fracture toughness , flexural strength , fracture (geology) , composite material , degradation (telecommunications) , mineralogy , chemical engineering , geology , telecommunications , computer science , engineering
This paper considers fracture strength, fracture origins, and hydrothermal degradation of 3Y‐TZP with grain sizes in the range of 110–480 nm. Biaxial fracture strength testing was used to show that the fracture strength increases with grain size and is governed by the concurrent change in fracture toughness. Hydrothermal degradation was studied by means of fractography, Raman microscopy and its effect on fracture strength. Up to 200 nm grain size, hydrothermal degradation of strength is limited. Larger grain sizes exhibit either premature failure or an increase in strength. A surface transformation zone was found to be responsible for both phenomena.