de Arellano-López, Antonio R. and Faber, K. T. (1999) Microstructural characterization of small-particle plasma spray coatings. Journal of the American Ceramic Society, 82 (8). pp. 2204-2208. ISSN 0002-7820. doi:10.1111/j.1151-2916.1999.tb02063.x. https://resolver.caltech.edu/CaltechAUTHORS:20140908-181324717
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Abstract
The microstructure of a small-particle plasma spray (SPPS) aluminum oxide coating sprayed onto a prepared mild steel substrate has been characterized using a variety of microscopic techniques as part of a process optimization study. The coating was highly conforming to the substrate as evidenced in high-resolution transmission electron microscopy, although some voids were present at the interface. The layered splat microstructure, characteristic of conventional plasma-sprayed coatings but smaller in size, was discerned in partially thinned samples in a focused-ion- beam scanning electron microscope (FIB-SEM). Microcracks and microporosity, generally less than 0.5 μm in size, was also seen between splats using transmission electron microscopy. Cubic alumina of the crystallographic form γ-Al_2O_3 was identified by electron diffraction.
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| Additional Information: | © 1999 The American Ceramic Society. Manuscript No. 190198. Received May 11, 1998; approved January 29, 1999. Supported by the U.S. Department of Energy, Federal Energy Technology Center, Cooperative Agreement No. DE-FC21-92MC29061. Additional support for A. R. de Arellano-López was provided by the Northwestern University–Universidad de Sevilla Cooperative Exchange Program and by the Spanish CICYT, Project MAT97-0562-C02-01. We thank Steve Wilhelm for preparing the coatings and T. Bernecki, J. Mawdsley, Y. J. Su, and R. Trice for reading and assistance with the manuscript. | |||||||||
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| Issue or Number: | 8 | |||||||||
| DOI: | 10.1111/j.1151-2916.1999.tb02063.x | |||||||||
| Record Number: | CaltechAUTHORS:20140908-181324717 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140908-181324717 | |||||||||
| Official Citation: | de Arellano-López, A. R. and Faber, K. T. (1999), Microstructural Characterization of Small-Particle Plasma Spray Coatings. Journal of the American Ceramic Society, 82: 2204–2208. doi: 10.1111/j.1151-2916.1999.tb02063.x | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 49404 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 09 Sep 2014 19:51 | |||||||||
| Last Modified: | 10 Nov 2021 18:43 |
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