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Dynamic fragmentation process and fragment microstructure evolution of alumina particles in a vacuum kinetic spraying system

Title
Dynamic fragmentation process and fragment microstructure evolution of alumina particles in a vacuum kinetic spraying system
Author
이창희
Keywords
Vacuum kinetic spraying (VKS) process; Shock wave; Dynamic fragmentation; Fragment size; Deposition mechanism
Issue Date
2015-11
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
SCRIPTA MATERIALIA, v. 108, Page. 72-75
Abstract
In a vacuum kinetic spraying (VKS) system, submicron ceramic particles impact the substrate and undergo dynamic fragmentation within nano-seconds, resulting in a nano grain film. In this report, a hypothesized mechanism for dynamic fragmentation generated during Al2O3 particle deposition is suggested and tested via Auto-dyn simulation linked to an analysis of distinct fragment microstructures and debris size calculations. Based on this data, shock-induced dynamic fragmentation, one of the crucial elements of clarifying the deposition mechanism, was investigated. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S1359646215002675?via%3Dihubhttp://hdl.handle.net/20.500.11754/28540
ISSN
1359-6462
DOI
10.1016/j.scriptamat.2015.06.020
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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