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Characterization, Deposition Mechanisms, and Modeling of Metallic Glass Powders for Cold Spray

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Cold-Spray Coatings

Abstract

This chapter describes recent efforts to understand the effects that chemical and physical properties of metallic glass (MG) powder particles have on the synthesis of their cold-sprayed coatings. Understanding the mechanical response of MG is fundamental to evaluate the conditions at which their powder particles can be deposited by cold spray. The characteristics of the feedstock powders are evaluated and used to ascertain ideal cold spray parameters. This information is also used to model the deposition mechanism of metallic glasses in the cold spray process. FE analysis and simulation is used to identify the phenomena behind the formation of MG coatings (i.e., homogenous or inhomogeneous deformation). The model defined considers strain rate and temperature dependence of MGs under different conditions.

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Acknowledgments

The authors gratefully acknowledge the Epson Atmix Corporation (Japan) for supplying the MG powders, the Thermal Spray Center of Barcelona, the Department of Engineering “Enzo Ferrari” (Modena, Italy), and the Universidad Nacional Autonoma de Mexico (UNAM) – campus Morelos.

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Correspondence to Mala M. Sharma .

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Henao, J., Sharma, M.M. (2018). Characterization, Deposition Mechanisms, and Modeling of Metallic Glass Powders for Cold Spray. In: Cavaliere, P. (eds) Cold-Spray Coatings. Springer, Cham. https://doi.org/10.1007/978-3-319-67183-3_8

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