Goel, Saurav ; Faisal, Nadimul Haque ; Ratia, Vilma ; Agrawal, Anupam ; Stukowski, Alexander (2014)
Atomistic investigation on the structure–property relationship during thermal spray nanoparticle impact.
In: Computational Materials Science, 84
doi: 10.1016/j.commatsci.2013.12.011
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
During thermal spraying, hot particles impact on a colder substrate. This interaction of crystalline copper nanoparticles and copper substrate is modeled, using MD simulation. The quantitative results of the impacts at different velocities and temperatures are evaluated using a newly defined flattening aspect ratio. This ratio between the maximum diameter after the impact and the height of the splat increases with increasing Reynolds numbers until a critical value is reached. At higher Reynolds numbers the flattening aspect ratio decreases again, as the kinetic energy of the particle leads to increasing substrate temperature and, therefore, decreases the substrate resistance. Thus, the particle penetrates into the substrate and deforms less.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Goel, Saurav ; Faisal, Nadimul Haque ; Ratia, Vilma ; Agrawal, Anupam ; Stukowski, Alexander |
| Art des Eintrags: | Bibliographie |
| Titel: | Atomistic investigation on the structure–property relationship during thermal spray nanoparticle impact |
| Sprache: | Englisch |
| Publikationsjahr: | März 2014 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Computational Materials Science |
| Jahrgang/Volume einer Zeitschrift: | 84 |
| DOI: | 10.1016/j.commatsci.2013.12.011 |
| Kurzbeschreibung (Abstract): | During thermal spraying, hot particles impact on a colder substrate. This interaction of crystalline copper nanoparticles and copper substrate is modeled, using MD simulation. The quantitative results of the impacts at different velocities and temperatures are evaluated using a newly defined flattening aspect ratio. This ratio between the maximum diameter after the impact and the height of the splat increases with increasing Reynolds numbers until a critical value is reached. At higher Reynolds numbers the flattening aspect ratio decreases again, as the kinetic energy of the particle leads to increasing substrate temperature and, therefore, decreases the substrate resistance. Thus, the particle penetrates into the substrate and deforms less. |
| Freie Schlagworte: | Thermal spray coating, Molecular dynamics, Copper, Particle impact, Flattening aspect ratio |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 08 Jan 2014 11:58 |
| Letzte Änderung: | 08 Jan 2014 11:58 |
| PPN: | |
| Sponsoren: | First author (SG) would like to acknowledge the funding support from J M Lessells travel scholarship from the Royal Society of Edinburgh (2013 RSE/J M Lessells Travel Scholarship) and International Research Fellowship account of Queen’s University Belfast |
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