Munoz, Nicole E and Gilliss, Shelley R and Ravishankar, N and Carter, Barry C (2002) Investigation of Surface Grooves from Migrating Grain Boundaries. In: MRS Proceedings, 750 .
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Visible-light microscopy (VLM) and atomic-force microscopy (AFM) were used to study the progression of grain-boundary grooving and migration in high-purity alumina (Lucalox™). Groove profiles from the same grain boundaries were revisited using AFM following successive heat-treatments. The grooves measured from migrating grain boundaries were found to have asymmetric partial-angles compared to those measured from boundaries that did not migrate during the experiment. For a moving boundary, the grain with the larger partial-angle was consistently found to grow into the grain with the smaller partial-angle. Migrating boundaries were observed to leave behind remnant thermal grooves. The observations indicate that the boundary may be bowing out during the migration process.
| Item Type: | Journal Article |
|---|---|
| Publication: | MRS Proceedings |
| Publisher: | Cambridge University Press |
| Additional Information: | Copyright of this article belongs to Cambridge University Press. |
| Department/Centre: | Division of Chemical Sciences > Materials Research Centre |
| Date Deposited: | 18 Aug 2011 07:02 |
| Last Modified: | 18 Aug 2011 07:02 |
| URI: | http://eprints.iisc.ac.in/id/eprint/39902 |
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