Improvement of Coating Properties in Three-Cathode Atmospheric Plasma Spraying

Bobzin, Kirsten; Kopp, Nils; Warda, Thomas; Petković, I.; Zimmermann, Stephan; Hartz-Behrend, K.; Landes, K.; Förster, Günter; Kirner, S.; Marqués, J.‐L.; Schein, J.; Prehm, J.; Möhwald, Kai; Bach, Fr.‐W.

doi:10.1007/s11666-013-9902-2

Cited by 10 publications

(6 citation statements)

References 23 publications

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“…The used mesh consists of 2,363,272 elements, using tetrahedra, pyramids, wedges and hexahedra as element types which exhibit an edge length ranging between 0.3 and 2 mm. Further details and more information of this model can be found in (Ref 23 ). Both models have been validated by measuring the temperatures of the plasma jet experimentally using computer tomographic, likewise the second model was validated by measuring the particle temperatures, velocities and positions in the plasma jet and comparing the particles trajectories with high-speed images of the injection region (Ref 24 ).…”

Section: Methodsmentioning

confidence: 99%

Capturing the Influence of Jet Fluctuations on Particles in Plasma Spraying

2022

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Instabilities and fluctuations of the plasma jet in a thermal spray process can have a significant influence on the particle in-flight temperatures and velocities, affecting the properties of resulting plasma-sprayed coatings. Presented in this paper is a novel method for capturing the effects particles are exposed to in the plasma spraying process. High-speed camera images of a plasma jet generated by a cascaded three-cathode plasma generator (TriplexPro-210) were recorded for varying operating conditions. The images are processed using the inverse Abel transform. This transformation accounts for the fact that the images represent a 2D projection of the 3D jet and generates more accurate intensity values that the sprayed particles would experience. These images are then combined with particle tracks resulting from CFD simulations of the plasma jet to match the particles path with the recorded plasma jet. This new method allows a precise description of the plasma intensity experienced by individual particles with a high temporal resolution. The results show a high sensitivity of the method, even detecting the influence on the particles of the plasma jet originating from the cascaded triple arc plasma generator, which is considered as rather stable.

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Section: Methodsmentioning

confidence: 99%

Capturing the Influence of Jet Fluctuations on Particles in Plasma Spraying

2022

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“…PDA without any size measurement), see Bobzin et al . dealing with high temperature and high velocities (up to 500 or 600 m/s) conditions and aiming, with similar measurements, to the improvement of plasma sprayed coating properties. For another reference devoted to plasma measurements, specifically particle velocities, in a plasma spraying process, see Mauer et al .…”

Section: Measurement Techniquesmentioning

confidence: 99%

Latest achievements in generalized Lorenz‐Mie theories: A commented reference database

Gouesbet

2014

Annalen der Physik

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“…The second model calculates the propagation of the plasma jet into the atmosphere as well as the acceleration and melting behaviour of injected particles. The basics and details of this model are described in [15], as these would also go beyond the scope of this paper. The model has been validated by experimental measurements of the plasma gas temperatures, the particle temperature and velocities [16], [17].…”

Section: Calculation Of the Particle Trajectoriesmentioning

confidence: 99%

Capturing the Influence of Jet Fluctuations on Particles in Plasma Spraying

Bobzin

Heinemann

O’Brien

2021

Thermal Spray 2021: Proceedings From the International Thermal Spray Conference

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Instabilities and fluctuations of the plasma jet can have a significant influence on the particle in-flight temperatures and velocities, thus affecting the properties of plasma sprayed coatings. Presented in this paper is a novel method for capturing the effects particles are exposed to in the plasma spraying process. High-speed camera images of a plasma jet generated by a cascaded three cathode plasma generator (TriplexPro-210) are recorded for varying operating conditions. The images are processed using the inverse Abel transform. This transformation accounts for the fact that the images represent a 2-D projection and generates correct intensity values of the plasma jet images. These images are then combined with particle tracks resulting from CFD simulations of the plasma jet to match the particles path with the recorded plasma jet. This new method allows a precise description of the plasma intensity experienced by individual particles with a high temporal resolution. The results show a high sensitivity of the method, it can even detect the influence of the plasma jet originating from the cascaded triple arc plasma generator, which is considered as rather stable, on the particles.

show abstract

Improvement of Coating Properties in Three-Cathode Atmospheric Plasma Spraying

Cited by 10 publications

References 23 publications

Capturing the Influence of Jet Fluctuations on Particles in Plasma Spraying

Capturing the Influence of Jet Fluctuations on Particles in Plasma Spraying

Latest achievements in generalized Lorenz‐Mie theories: A commented reference database

Capturing the Influence of Jet Fluctuations on Particles in Plasma Spraying

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