Laser surface modification involves rapid melting and solidification is an elegant technique used for locally tailoring the surface morphology of alumina in order to enhance its abrasive characteristics. COMSOL Multiphysics® based heat transfer modeling and experimental approaches were designed and used in this study for single and multiple laser tracks to achieve densely-packed multi-facet grains via temperature history, cooling rate, solidification, scanning electron micrographs, and wear rate. Multi-facet grains were produced at the center of laser track with primary dendrites extending toward the edge of single laser track. The multiple laser tracks study indicates the grain/dendrite size increases as the laser energy density increases resulting in multiplying the abrasive edges which in turn enhance the abrasive qualities.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc177232 |
| Date | 12 1900 |
| Creators | Moncayo, Marco Antonio |
| Contributors | Dahotre, Narendra B., Collins, Peter, Wang, Zhiqiang |
| Publisher | University of North Texas |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | Text |
| Rights | Public, Moncayo, Marco Antonio, Copyright, Copyright is held by the author, unless otherwise noted. All rights Reserved. |
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