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PUBLICATIONS

Spontaneous Ejecta From [Beta]-Eucryptite Composites

Published

Author(s)

Ivar E. Reimanis, C Seick, K Fitzpatrick, Lin-Sien H. Lum, S Landin

Abstract

Polycrystalline ceramic composites, comprised of primarily b-eucryptite (LiAlSiO4) and lithium aluminate (LiAl5O8) crystals, with a near-zero coefficient of thermal expansion were examined with indentation experiments. A unique behavior is reported: subsequent to the indentation, the material responds by ejecting multiple particles violently from the area of the indent for a time period up to several minutes. The behavior is suppressed in the absence of moisture. An estimate of the source of energy for this process and a potential mechanism are discussed.
Citation
Journal of the American Ceramic Society
Pub Type
Journals

Keywords

composites, ejecta, eucryptite, microcracking, misfil strains, thermal expansion anisotropy, transformation
Ceramics and Biomaterials

Citation

Reimanis, I. , Seick, C. , Fitzpatrick, K. , Lum, L. and Landin, S. (2017), Spontaneous Ejecta From [Beta]-Eucryptite Composites, Journal of the American Ceramic Society (Accessed December 9, 2023)

Created February 19, 2017