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Indexed by:期刊论文

Date of Publication:2012-10-15

Journal:APPLIED SURFACE SCIENCE

Included Journals:SCIE、EI、Scopus

Volume:259

Page Number:294-300

ISSN No.:0169-4332

Key Words:Cold spraying (CS); Finite element analysis (FEA); Numerical simulation; Euler method; Oxide film; High velocity impact

Abstract:In cold spraying, oxide-free interface is an important factor for metal-to-metal contact between powder particles and substrate, which determines the bonding strength and final coating quality. In this study, a systematic finite element analysis (FEA) is performed to examine the deformation behavior of the oxide film on an Al 6061-T6 particle surface after deposition. The simulation results show that the oxide film can be disrupted during the high velocity impact. Part of the cracked oxides remains at the interface and mainly accumulates at the central region after particle deposition. Substrate hardness, particle velocity and spray angle are found to influence the deformation behavior and final state of the oxide film. Besides, interparticle interaction is also investigated in the present work to clarify the deformation behavior of the oxide film inside the coating. (C) 2012 Elsevier B.V. All rights reserved.