Crossref journal-article
Wiley
Journal of the American Ceramic Society (311)
Abstract

Isothermal growth of β‐Si3N4 crystals dispersed in an oxynitride glass (Y‐Si‐Al‐O‐N) was studied by electron microscopy after heat treatment at temperatures between 1550° and 1640°C for 1 to 18 h. The β‐crystals exhibited growth striations introduced by intermediate coolings and these striations were used for developing a sophisticated technique for analysis of growth. It was determined that α/β‐transformation and Ostwald ripening can be treated as different kinetic stages of grain growth, while β‐nucleation was found to be insignificant. The mean diameter of the needlelike β‐grains was almost constant during phase transformation, indicating negligible growth of the β‐prism plane; growth was mainly one‐dimensional with the maximum mean length and aspect ratio just at the end of the phase transformation. The growth rate of the β‐basal plane was independent of diameter, indicating interface‐controlled growth. During Ostwald ripening, the length distribution broadened and the aspect ratio of smaller grains decreased. Dissolution of small grains caused an increase in the mean diameter, while the mean aspect ratio decreased.

Bibliography

Krämer, M., Hoffmann, M. J., & Petzow, G. (1993). Grain Growth Studies of Silicon Nitride Dispersed in an Oxynitride Glass. Journal of the American Ceramic Society, 76(11), 2778–2784. Portico.

Authors 3
  1. Martin Krämer (first)
  2. Michael J. Hoffmann (additional)
  3. Günter Petzow (additional)
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Dates
Type When
Created 20 years, 5 months ago (March 8, 2005, 11:21 a.m.)
Deposited 1 year, 9 months ago (Nov. 23, 2023, 3:08 p.m.)
Indexed 1 month ago (Aug. 2, 2025, 12:39 a.m.)
Issued 31 years, 10 months ago (Nov. 1, 1993)
Published 31 years, 10 months ago (Nov. 1, 1993)
Published Online 20 years, 5 months ago (March 8, 2005)
Published Print 31 years, 10 months ago (Nov. 1, 1993)
Funders 0

None

@article{Kr_mer_1993, title={Grain Growth Studies of Silicon Nitride Dispersed in an Oxynitride Glass}, volume={76}, ISSN={1551-2916}, url={http://dx.doi.org/10.1111/j.1151-2916.1993.tb04015.x}, DOI={10.1111/j.1151-2916.1993.tb04015.x}, number={11}, journal={Journal of the American Ceramic Society}, publisher={Wiley}, author={Krämer, Martin and Hoffmann, Michael J. and Petzow, Günter}, year={1993}, month=nov, pages={2778–2784} }