10.1111/j.1151-2916.1978.tb09276.x
Crossref journal-article
Wiley
Journal of the American Ceramic Society (311)
Abstract

It is shown from experimental observation that cylindrical voids in polycrystalline alumina are unstable. When isothermally annealed, they undergo various configurational changes, in accordance with the theoretical prediction, prior to an ultimate breakup into rows of spherical voids. The breakup occurs by ovulation, if the aspect ratio is appropriate. If the required aspect ratio is not met, cylindrical voids are directly transformed into spherical voids by spheroidization. The predominant mechanism for void breakup on thermal anneal confirms a model for surface‐diffusion‐control material transport. The estimated surface‐diffusion coefficients at the experimental annealing temperatures agree, within an order of magnitude, with the values reported in the literature.

Bibliography

GUPTA, T. K. (1978). Instability of Cylindrical Voids in Alumina. Journal of the American Ceramic Society, 61(5–6), 191–195. Portico.

Authors 1
  1. T. K. GUPTA (first)
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Dates
Type When
Created 19 years, 2 months ago (June 6, 2006, 9:37 p.m.)
Deposited 2 years ago (Aug. 30, 2023, 2:14 a.m.)
Indexed 3 months ago (May 27, 2025, 11 a.m.)
Issued 47 years, 3 months ago (May 1, 1978)
Published 47 years, 3 months ago (May 1, 1978)
Published Online 19 years, 2 months ago (June 2, 2006)
Published Print 47 years, 3 months ago (May 1, 1978)
Funders 0

None

@article{GUPTA_1978, title={Instability of Cylindrical Voids in Alumina}, volume={61}, ISSN={1551-2916}, url={http://dx.doi.org/10.1111/j.1151-2916.1978.tb09276.x}, DOI={10.1111/j.1151-2916.1978.tb09276.x}, number={5–6}, journal={Journal of the American Ceramic Society}, publisher={Wiley}, author={GUPTA, T. K.}, year={1978}, month=may, pages={191–195} }