Document Type

Contribution to Book

Title

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

Source Publication

Cold-Spray Coatings: Recent Trends and Future Perspectives

Publication Date

2018

Editor

Pasquale Cavaliere

Publisher

Springer

City

Berlin

ISBN

978-3-319-67182-6

First Page

251

Last Page

272

Department

Mechanical Engineering

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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