Homogenization of coating properties in atmospheric plasma spraying - New results of a DFG (German Research Foundation)-Funded Research Group

verfasst von: K. Bobzin, N. Bagcivan, D. Parkot, I. Petkovic, J. Schein, G. Forster, S. Zimmermann, J. L. Marques, Fr W. Bach, K. Möhwald, J. Prehm, K. Hartz
Abstract: In order to homogenize the properties of APS sprayed coatings by employing 3-cathode technologies, the spray process was investigated using numerical simulations combined with innovative diagnostic techniques. Thus the process was subdivided into three areas: the plasma torch, the free jet and the coating formation, allowing the development of individual numerical models. By simulating these areas separately and combining the results, appropriate process parameters for homogenized coatings were to be obtained. A numerical model for a 3-cathode torch was developed to investigate the plasma flow inside the torch. For a comprehensive computation of coating formation, which, besides the impact, flattening and solidification of the particles, includes the mechanical properties of the coating, a "Volume of Fluid" algorithm (VOF) is coupled with a "Finite Element Method" (FEM). In order to verify the modeling of the plasma jet and to provide input data for the coating formation the diapostic efforts were concentrated on measuring the gas temperature of the plasma as well as particle shape, velocity and temperature. The results of spatially resolved 3D analysis employing an innovative tomography system for most of the mentioned parameters are presented and compared with the numerical results.
Organisationseinheit(en): Institut für Werkstoffkunde
Externe Organisation(en): Rheinisch-Westfälische Technische Hochschule Aachen (RWTH)
Universität der Bundeswehr München
Typ: Aufsatz in Konferenzband
Seiten: 762-767
Anzahl der Seiten: 6
Publikationsdatum: 04.05.2009
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Oberflächen und Grenzflächen, Oberflächen, Beschichtungen und Folien, Werkstoffchemie
Elektronische Version(en): https://doi.org/10.1361/cp2009itsc0762 (Zugang: Geschlossen)
https://doi.org/10.31399/asm.cp.itsc2009p0762 (Zugang: Geschlossen)

BibTeX

@inproceedings{7b11a5c5224b44adbdd84beec276b4eb,
title = "Homogenization of coating properties in atmospheric plasma spraying - New results of a DFG (German Research Foundation)-Funded Research Group",
abstract = "In order to homogenize the properties of APS sprayed coatings by employing 3-cathode technologies, the spray process was investigated using numerical simulations combined with innovative diagnostic techniques. Thus the process was subdivided into three areas: the plasma torch, the free jet and the coating formation, allowing the development of individual numerical models. By simulating these areas separately and combining the results, appropriate process parameters for homogenized coatings were to be obtained. A numerical model for a 3-cathode torch was developed to investigate the plasma flow inside the torch. For a comprehensive computation of coating formation, which, besides the impact, flattening and solidification of the particles, includes the mechanical properties of the coating, a {"}Volume of Fluid{"} algorithm (VOF) is coupled with a {"}Finite Element Method{"} (FEM). In order to verify the modeling of the plasma jet and to provide input data for the coating formation the diapostic efforts were concentrated on measuring the gas temperature of the plasma as well as particle shape, velocity and temperature. The results of spatially resolved 3D analysis employing an innovative tomography system for most of the mentioned parameters are presented and compared with the numerical results.",
author = "K. Bobzin and N. Bagcivan and D. Parkot and I. Petkovic and J. Schein and G. Forster and S. Zimmermann and Marques, {J. L.} and Bach, {Fr W.} and K. M{\"o}hwald and J. Prehm and K. Hartz",
year = "2009",
month = may,
day = "4",
doi = "10.1361/cp2009itsc0762",
language = "English",
isbn = "9781615030040",
series = "Proceedings of the International Thermal Spray Conference",
pages = "762--767",
booktitle = "Expanding Thermal Spray Performance to New Markets and Applications - Proceedings of the 2009 International Thermal Spray Conference, ITSC 2009",
note = "Expanding Thermal Spray Performance to New Markets and Applications - 2009 International Thermal Spray Conference, ITSC 2009 ; Conference date: 04-05-2009 Through 07-05-2009",
}