Journal ArticleDOI
Understanding plasma spraying
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TLDR
In this paper, a summary of the actual knowledge in plasma spraying with an emphasis on the points where work is still in progress is presented, including: the plasma torches with the resulting plasma jets and their interactions with the surrounding environment, powder injection with the heat, momentum and mass transfers between particles and first plasma jets, the particles flattening and solidification, forming splats which then layer to form the coating.Abstract:
This article intends to summarize our actual knowledge in plasma spraying with an emphasis on the points where work is still in progress. It presents successively: the plasma torches with the resulting plasma jets and their interactions with the surrounding environment; the powder injection with the heat, momentum and mass transfers between particles and first plasma jets and then plasma plume; the particles flattening and solidification, forming splats which then layer to form the coating; the latest developments related to the production of plasma sprayed finely structured coatings.read more
Citations
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Journal ArticleDOI
Influence of the Gas Injection Angle on the Jet Characteristics of a Non-transferred DC Plasma Torch
TL;DR: In this paper, an experimental study on the influence of the gas injection angle (GIA) on the jet characteristics has been carried out on a specially designed non-transferred direct current (DC) plasma torch, whose GIA can be changed by replacing a gas injection component.
Journal ArticleDOI
Optimization of the injection with a twin-fluid atomizer for suspension plasma spray process using three non-intrusive diagnostic tools
E. Aubignat,Marie-Pierre Planche,D. Billieres,Alain Allimant,Laurent Girardot,Yannick Bailly,Ghislain Montavon +6 more
TL;DR: This study focuses on the three-step characterization of a twin-fluid atomizer, without and within the plasma, to understand how gas and suspension flow rates impact on droplets size and velocity distributions and finally how one could select the best injection conditions.
Journal ArticleDOI
Non-transferred Arc Torch Simulation by a Non-equilibrium Plasma Laminar-to-Turbulent Flow Model
TL;DR: In this article, a non-transferred arc plasma spray torch is simulated using variational multiscale (VMS) and nonlinear VMSn methods, which are suitable for unified laminar and turbulent flow simulations.
Journal ArticleDOI
Fabrication and electrochemical performance of solid oxide fuel cell components by atmospheric and suspension plasma spray
TL;DR: In this paper, the theory of functionally graded material (FGM) was applied in the fabrication process of PEN (Positive-Electrolyte-Negative), the core component of solid oxide fuel cell (SOFC).
Journal ArticleDOI
On the physical processes ruling an atmospheric pressure air glow discharge operating in an intermediate current regime
TL;DR: In this paper, low-frequency and intermediate-current glow discharges were experimentally investigated in atmospheric pressure air between blunt copper electrodes, and the visible emissive structure of the discharge resembles to that of a typical low-pressure glow, thus suggesting a glow-like electric field distribution in the discharge.
References
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Book
The Science and Engineering of Thermal Spray Coatings
TL;DR: In this article, the authors present a detailed overview of the main steps in the process of spraying particles and their properties, including properties such as temperature, surface properties, and surface properties.
Journal ArticleDOI
Residual Stresses in Thermal Spray Coatings and Their Effect on Interfacial Adhesion : A Review of Recent Work
T.W. Clyne,S. C. Gill +1 more
TL;DR: In this paper, the main experimental techniques for measurement of residual stresse are briefly described, with particular attention given to the method of continuous curvature monitoring, and relationships are presented between residual stresses and corresponding strain energy release rates during interfacial debonding.
Journal ArticleDOI
Knowledge concerning splat formation : An invited review
TL;DR: In this article, the impact and flattening of single particles on smooth or rough substrates with different tilting is summarized and different diagnostic methods, including imaging, are briefly described.
Journal ArticleDOI
Recent advances of superhard nanocomposite coatings: a review
TL;DR: A review of the present status of the research and technological development in the field of superhard nanocomposite coatings is attempted in this article, where a number of deposition techniques have been used to prepare Nanocomposites. Among them, reactive magnetron sputtering is most commonly used.
Journal ArticleDOI
On a three-dimensional volume tracking model of droplet impact
TL;DR: In this article, a three-dimensional model of droplet impact onto asymmetric surface geometries is developed, based on RIPPLE, and combines a fixed-grid control volume discretization of the flow equations with a volume tracking algorithm to track the droplet free surface.