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In Situ Raman Indentation of β-Eucryptite: Characterization of the Pressure-Induced Phase Transformation |
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| Authors: | Timothy Jochum Ivar E. Reimanis Michael J. Lance Edwin R. Fuller Jr. |
| Affiliation: | Metallurgical and Materials Engineering Department, Colorado School of Mines, Golden, Colorado 80401; High Temperature Materials Laboratory, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831; Ceramics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8520 |
| Abstract: | A pressure-induced phase transformation in the lithium aluminum silicate β-eucryptite was studied with in situ Raman spectroscopy. Dense β-eucryptite composites were made via powder synthesis followed by sintering. The specimens were then subjected to diamond indentation up to applied contact stresses of about 8 GPa, while collecting Raman spectra. The appearance of a Raman peak (∼520 cm |
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