Journal
ADVANCES IN APPLIED CERAMICS
Volume 110, Issue 2, Pages 114-119Publisher
MANEY PUBLISHING
DOI: 10.1179/1743676110Y.0000000016
Keywords
Micro-Raman spectroscopy; Nanozirconia; Two-step sintering
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Funding
- Engineering and Physical Sciences Research Council [TS/G000891/1, EP/I500227/1] Funding Source: researchfish
- EPSRC [EP/I500227/1, TS/G000891/1] Funding Source: UKRI
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Micro-Raman spectroscopy has been employed as an effective technique to determine the phase transformations in nanostructured yttria stabilised zirconia (YSZ) ceramics with different yttria contents. Samples have been prepared with varying mean grain sizes by a slip casting route followed by a microwave assisted two-step sintering cycle starting with aqueous nanozirconia suspensions. Indents were generated using a Vickers pyramidal indenter at different loads, and the resulting phase transformations were mapped using micro-Raman spectroscopy. The results were compared to those of a commercial submicrometre 3 mol.% YSZ. The amount of transformation was found to be much lower for nanozirconia compared to the submicrometre zirconia with similar yttria content.
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