Srikanth, V. ; Subbarao, E. C. ; Rao, G. V. (1992) Thermal expansion anisotropy, microcracking and acoustic emission of Nb2O5 ceramics Ceramics International, 18 (4). pp. 251-261. ISSN 0272-8842
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0272-8842(92)90103-K
Abstract
The axial thermal expansion coefficients of monoclinic Nb2O5 are strongly anisotropic. The thermal expansion of niobia ceramics has a small overall value over a wide temperature range and also exhibits hysteresis on heating and cooling. These phenomena are attributed to microcracking occurring during cooling and healing of microcracks during heating. Microcracking, which arises from the thermal expansion anisotropy, has been detected by the acoustic emission study of sintered and hot-pressed ceramics of niobia. Acoustic emission activity has been correlated with the microstructure (grain size) and thermal history of the samples.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 50467 |
| Deposited On: | 25 Jul 2011 10:36 |
| Last Modified: | 25 Jul 2011 10:36 |
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