Gas and ceramic particle velocities for micro-cold spray
Abstract
The particle impact velocity is a critical parameter in assessing deformation and particle adhesion mechanisms that occur during the micro-cold spray process (also referred to as the aerosol deposition method or vacuum kinetic spraying) for depositing fine ceramic particles. In this study, the influence of operating parameters including inlet gas pressure, gas pressure ratios, gas type, and nozzle-to-substrate distance on gas velocities is studied. The gas velocities are then used to calculate maximum particle velocities, slowing that occurs as the particle travels through compressed gas near the substrate, and particle impact velocities. The drag laws used are appropriate for the full range of particles sizes used in micro-cold spray and related processes from 50 nm to 5 μm. The process parameters that maximize particle impact velocity for particles with a range of sizes and densities are delineated, and the influence of nozzle geometries is assessed.
- Authors:
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Texas, Austin, TX (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1902780
- Alternate Identifier(s):
- OSTI ID: 1908482
- Report Number(s):
- LA-UR-22-28809
Journal ID: ISSN 0021-8502; S0021850222001495; 106113; PII: S0021850222001495
- Grant/Contract Number:
- 89233218CNA000001
- Resource Type:
- Published Article
- Journal Name:
- Journal of Aerosol Science
- Additional Journal Information:
- Journal Name: Journal of Aerosol Science Journal Volume: 169 Journal Issue: C; Journal ID: ISSN 0021-8502
- Publisher:
- Elsevier
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Bierschenk, Stephen G., Becker, Michael F., and Kovar, Desiderio. Gas and ceramic particle velocities for micro-cold spray. United Kingdom: N. p., 2023.
Web. doi:10.1016/j.jaerosci.2022.106113.
Bierschenk, Stephen G., Becker, Michael F., & Kovar, Desiderio. Gas and ceramic particle velocities for micro-cold spray. United Kingdom. https://doi.org/10.1016/j.jaerosci.2022.106113
Bierschenk, Stephen G., Becker, Michael F., and Kovar, Desiderio. Wed .
"Gas and ceramic particle velocities for micro-cold spray". United Kingdom. https://doi.org/10.1016/j.jaerosci.2022.106113.
@article{osti_1902780,
title = {Gas and ceramic particle velocities for micro-cold spray},
author = {Bierschenk, Stephen G. and Becker, Michael F. and Kovar, Desiderio},
abstractNote = {The particle impact velocity is a critical parameter in assessing deformation and particle adhesion mechanisms that occur during the micro-cold spray process (also referred to as the aerosol deposition method or vacuum kinetic spraying) for depositing fine ceramic particles. In this study, the influence of operating parameters including inlet gas pressure, gas pressure ratios, gas type, and nozzle-to-substrate distance on gas velocities is studied. The gas velocities are then used to calculate maximum particle velocities, slowing that occurs as the particle travels through compressed gas near the substrate, and particle impact velocities. The drag laws used are appropriate for the full range of particles sizes used in micro-cold spray and related processes from 50 nm to 5 μm. The process parameters that maximize particle impact velocity for particles with a range of sizes and densities are delineated, and the influence of nozzle geometries is assessed.},
doi = {10.1016/j.jaerosci.2022.106113},
journal = {Journal of Aerosol Science},
number = C,
volume = 169,
place = {United Kingdom},
year = {Wed Mar 01 00:00:00 EST 2023},
month = {Wed Mar 01 00:00:00 EST 2023}
}
https://doi.org/10.1016/j.jaerosci.2022.106113
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