Specific Measurements of In-Flight Droplet and Particle Behavior and Coating Microstructure in Suspension and Solution Plasma Spraying

2015 ◽  
Vol 24 (8) ◽  
pp. 1498-1505 ◽  
Author(s):  
P. Fauchais ◽  
M. Vardelle ◽  
S. Goutier ◽  
A. Vardelle
Keyword(s):  
Plasma Spraying ◽  
Particle Behavior ◽  
Coating Microstructure

D.C. Plasma Spraying: Effect of Arc root Fluctuations on Particle Behavior in the Plasma Jet

1999 ◽  
Vol 3 (2-3) ◽  
pp. 235-254 ◽  
Author(s):  
B. Dussoubs ◽  
G. Mariaux ◽  
Armelle Vardelle ◽  
Michel Vardelle ◽  
Pierre Fauchais
Keyword(s):  
Plasma Spraying ◽  
Plasma Jet ◽  
Particle Behavior ◽  
Arc Root

Tribocorrosion characteristics of Ti6Al4V-TiB-TiN in-situ composite coatings prepared using plasma spraying

2020 ◽  
pp. 002199832098112
Author(s):  
Akrity Anand ◽  
Mitun Das ◽  
Biswanath Kundu ◽  
Vamsi Krishna Balla ◽  
Subhadip Bodhak ◽  
...  
Keyword(s):  
Plasma Spraying ◽  
Strong Influence ◽  
Dominant Role ◽  
Composite Coatings ◽  
High Hardness ◽  
Alloy Composite ◽  
Material Loss ◽  
In Situ Composite ◽  
Coating Microstructure

Ti6Al4V alloy composite coatings in-situ reinforced with TiB-TiN were deposited on Ti substrate using plasma spraying. Influence of plasma power (50 and 60 kW) and deposition speed (40 and 50 mm/s) on coating microstructure and bio-tribocorrosion performance was analyzed. Process parameters found to have strong influence on the tribocorrosion behavior and the material loss/damage of these coatings was found to be significantly less than that of Ti substrate. However, corrosion played a dominant role in affecting the wear and overall damage of all materials. Present in-situ composite coatings reinforced TiB-TiN exhibited superior tribocorrosion resistance than Ti substrate as a result of their high hardness and non-passivating nature.

Numerical Study on Plasma Jet and Particle Behavior in Multi-arc Plasma Spraying

2017 ◽  
Vol 26 (5) ◽  
pp. 811-830 ◽  
Author(s):  
K. Bobzin ◽  
M. Öte ◽  
J. Schein ◽  
S. Zimmermann
Keyword(s):  
Plasma Spraying ◽  
Numerical Study ◽  
Plasma Jet ◽  
Arc Plasma ◽  
Particle Behavior

Effect of Thermal Spray Processing Techniques on the Microstructure and Properties of Ni-Based Amorphous Coatings

2005 ◽  
Vol 475-479 ◽  
pp. 2887-2890
Author(s):  
Sang Mok Lee ◽  
B.M. Moon ◽  
Eric Fleury ◽  
H.S. Ahn ◽  
Do Hyang Kim ◽  
...  
Keyword(s):  
Plasma Spraying ◽  
Laser Cladding ◽  
Amorphous Materials ◽  
Limiting Factor ◽  
Amorphous Coating ◽  
Wear Properties ◽  
Vacuum Plasma Spraying ◽  
Coating Microstructure ◽  
Processing Techniques ◽  
Amorphous Coatings

Metallic amorphous materials have been widely developed thanks to the outstanding properties including high chemical stability, mechanical strength, and magnetic properties. However, with the exception of a few compositions, the limiting factor is the critical cooling rate for the formation of the amorphous phase. For many applications, it is only the contact surface properties that are important, thus the use of coating techniques such as thermal sprayings has several attractive features. In this paper, we present the microstructure of Ni-based amorphous coatings prepared by laser cladding and vacuum plasma spraying. The utilization of plasma spraying to deposit atomized powder enabled the formation of fully amorphous coating, laser cladding resulted in mostly crystallized structures. Glass forming ability and wear properties of the coatings were discussed as a function of the coating microstructure.

Influence of Plasma Spraying Parameters on Coating Damage

2000 ◽  
Author(s):  
L. Bianchi ◽  
N. Baradel ◽  
N. Llorca-Isern ◽  
G. Bertran-Vidai
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Thermal Cycling ◽  
Plasma Spraying ◽  
Confocal Microscope ◽  
Properties Of Coatings ◽  
Low Viscosity ◽  
Spraying Parameters ◽  
Substrate Properties ◽  
Coating Microstructure

Abstract The influence of plasma spraying parameters on the mechanical properties of coatings has been studied. ZrO2-Y2O3 coatings were sprayed onto stainless steel and aluminium substrates at temperatures of about 75°C and 225°C. An original set of samples, facilitating the measurement of substrate deflection, was used to evaluate the effect of thermal cycling under different spraying conditions. In order to correlate thermal cycling values and mechanical properties to coating microstructure, the coatings were impregnated with low-viscosity resin and examined under a confocal microscope. The results reveal the influence of spraying temperature, substrate properties, and torch-substrate velocity on coating damage.

Characterization of Lithium Phosphate Deposit by Atmospheric Plasma Spraying

2021 ◽  
Author(s):  
Yin-Qiu Sun ◽  
Zheng Wei ◽  
Xiao-Tao Luo ◽  
Chang-Jiu Li
Keyword(s):  
Particle Size ◽  
Plasma Spraying ◽  
Orthorhombic Phase ◽  
Atomic Ratio ◽  
Atmospheric Plasma ◽  
Icp Ms ◽  
Coating Microstructure ◽  
Phosphate Deposit ◽  
Effect Of Particle Size ◽  
Plasma Sprayed

Abstract Plasma spraying was used to deposit Li3PO4 coatings from sintered dense powders in three size ranges to study the effects of particle size and spraying distance. Coating microstructure, crystal structure, and composition were characterized using SEM, XRD, ICP-MS, and FTIR. It was found that sintered dense powders have a high temperature orthorhombic phase (γ-Li3PO4) that differs from the β-Li3PO4 phase associated with agglomerated Li3PO4. Plasma-sprayed coatings produced from these powders have similarly dense microstructures with fracture-surface morphology like that of sintered bulk. The effect of particle size and spraying distance on atomic ratio is also investigated in the study.

Investigation of the Long-Term Stability of Plasma Spraying by Monitoring Characteristics of the Sprayed Particles

1997 ◽  
Author(s):  
L. Leblanc ◽  
P. Gougeon ◽  
C. Moreau
Keyword(s):  
Plasma Spraying ◽  
Particle State ◽  
Electrode Wear ◽  
Spray Parameters ◽  
Long Term Stability ◽  
Long Term Experiment ◽  
On Line ◽  
Coating Microstructure ◽  
Plasma Sprayed

Abstract In plasma spraying temperature and velocity of the sprayed particles are among the most important parameters influencing the microstructure and properties of the deposited coatings. However, the sprayed particle state is influenced by uncontrollable parameters such as the wear state of the electrodes. In order to investigate the influence of the electrode wear state on sprayed particles, a long-term experiment was conducted during which on-line measurements of plasma sprayed yttria-zirconia powder were performed. Results show that even though input parameters were kept constant during the experiment the state of the sprayed particle changed significantly and coatings prepared at different spraying times have different microstructures and can have different properties. However, by changing some input spray parameters it was possible to retrieve the initial sprayed particle state and coating microstructure.

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