Dynamic fragmentation process and fragment microstructure evolution of alumina particles in a vacuum kinetic spraying system. (November 2015)

• Record Type: Journal Article
• Authors: Park, Hyungkwon; Kim, Jinyoung; Lee, Changhee
• Is Part Of: Scripta materialia. Volume 108(2015)
• Page Start: 72
• Page End: 75
• Publication Date: 2015-11
• Subjects: Vacuum kinetic spraying (VKS) process -- Shock wave -- Dynamic fragmentation -- Fragment size -- Deposition mechanism; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.06.020
• Languages: English
• ISSNs: 1359-6462

Abstract

Graphical abstract: 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 Al2 O3 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.