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Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications: On-Demand Poster Presentations
Sponsored by: ACerS Engineering Ceramics Division, ACerS Basic Science Division, ACerS Manufacturing Division
Program Organizers: Xuan Song, University of Iowa; Lei Chen, University of Michigan-Dearborn; Xiangyang Dong, Arizona State University; Yiquan Wu, Alfred University; Paolo Colombo, University of Padova; Rajendra Bordia, Clemson University; Long-Qing Chen, The Pennsylvania State University

Friday 8:00 AM
October 22, 2021
Room: On-Demand Poster Hall
Location: MS&T On Demand

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Properties of LiNbO3 Films Deposited by Micro-Cold Spray at Varying Angles of Impact: Stephen Bierschenk¹; Michael Becker¹; Susanne Lee²; Desiderio Kovar¹; ¹The University of Texas at Austin; ²L3Harris Technologies, Inc.
    Micro-cold spray is the process of accelerating solid nanoparticles through a nozzle and impacting them at high velocity onto a substrate to deposit nanostructured films. By moving the substrate beneath the fixed nozzle, patterned films of metals and ceramics can be deposited at room temperature without a mask. Experiments conducted with direct axial impact of LiNbO3 nanoparticles results in amorphous films that are limited to thicknesses of 10 µm because the deposition efficiency decreases with film thickness. Molecular dynamics simulations conducted on other ceramic particles suggest that deposition efficiency may be increased by incorporating a radial component in addition to the axial velocity. Experimentally, films have been deposited at nanoparticle impact angles of up to 60° from the axial position. Annealing the amorphous films at a temperature of 250˚C results in crystallization of the films. The effect of radial impact velocity of the nanoparticles on film deposition efficiency, microstructure, and film properties will be discussed.

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