Numerical Analysis on Plasma Spraying in a DC-RF Hybrid Plasma Reactor.

Abstract Hybrid plasma spraying combined with YAG laser irradiation was studied in order to obtain the optimum zirconia coatings for thermal barrier use. Zirconia coatings of approximately 150 ;Um in thickness were formed on the NiCrAlY under coated steel substrates both by means of conventional plasma spraying and hybrid plasma spraying under a variety of conditions. Post-laser irradiation was also conducted on the plasma as-sprayed coating for comparison. The microstructure of each coating was studied in detail and, for some representative coatings, thermal barrier properties were evaluated by hot erosion and a hot oxidation test. With hybrid spraying, performed under optimum conditions, it was found that a microstructure with appropriate partial densification and without connected porosities was formed and that cracks, which are generally produced in the post-laser irradiation treatment, were completely inhibited. In addition, hybrid spraying formed a smooth coating surface. These microstructural changes resulted in improved coating properties with regard to hardness, high temperature erosion resistance and oxidation resistance.

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Numerical analysis of the effect of electrode spacing on deposition rate profiles in a capacitively coupled plasma reactor

Plasma Sources Science and Technology ◽

10.1088/0963-0252/25/6/065006 ◽

2016 ◽

Vol 25 (6) ◽

pp. 065006 ◽

Cited By ~ 3

Author(s):

Ho Jun Kim ◽

Hae June Lee

Keyword(s):

Numerical Analysis ◽

Deposition Rate ◽

Plasma Reactor ◽

Electrode Spacing ◽

Capacitively Coupled ◽

Capacitively Coupled Plasma

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Studies of laser hybrid plasma spraying WC–10Co4Cr coatings

Surface Engineering ◽

10.1179/1743294413y.0000000116 ◽

2013 ◽

Vol 30 (1) ◽

pp. 1-5 ◽

Cited By ~ 2

Author(s):

S. Q. Li ◽

S. L. Gong ◽

Y. P. Duan ◽

S. H. Liu

Keyword(s):

Plasma Spraying ◽

Hybrid Plasma ◽

Laser Hybrid

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Hybrid Plasma Spraying —Discovering the Effects of Deposition Parameters

10.31399/asm.cp.itsc2021p0493 ◽

2021 ◽

Author(s):

Tomas Tesar ◽

Radek Musalek ◽

Jan Medricky ◽

Jan Cizek ◽

Frantisek Lukac ◽

...

Keyword(s):

Plasma Spraying ◽

Thermal Spraying ◽

Hybrid Coatings ◽

Deposition Parameters ◽

Wide Range ◽

Hybrid Plasma ◽

Coating Formation ◽

Liquid Feedstock ◽

Multiple Case ◽

Sprayed Coatings

Abstract Hybrid plasma spraying is emerging as the next potential technology leap in thermal spraying. The combination of high throughput and deposition rates of coatings sprayed from powders with the tailored functionality of liquid-feedstock sprayed coatings appears highly promising for a wide range of applications. Moreover, possible refined mixtures of different materials come readily with the utilization of multiple feedstocks with varying particle sizes. However, the practical aspects of hybrid coatings production are accompanied with several peculiarities not encountered when using distinct feedstocks. To deepen the understanding of this novel route, this paper presents fundamental hybrid coating formation principles and the effect of selected deposition parameters using multiple case-study material systems, such as Al2O3-YSZ, Al2O3-Cr2O3, and Al2O3-TiO2.

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“Hybrid” plasma spraying of NiCrAlY+Al 2 O 3 + h -BN composite coatings for sliding wear applications

Wear ◽

10.1016/j.wear.2017.02.027 ◽

2017 ◽

Vol 378-379 ◽

pp. 68-81 ◽

Cited By ~ 19

Author(s):

Giovanni Bolelli ◽

Alessia Candeli ◽

Luca Lusvarghi ◽

Tiziano Manfredini ◽

Alain Denoirjean ◽

...

Keyword(s):

Plasma Spraying ◽

Sliding Wear ◽

Composite Coatings ◽

Hybrid Plasma

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Process Intensification of Tetrabromobisphenol S Removal with a Bubble-film hybrid Plasma Reactor

Chemical Engineering Journal ◽

10.1016/j.cej.2021.131736 ◽

2021 ◽

pp. 131736

Author(s):

Xiaoping Wang ◽

Jie Mei ◽

Jihang Luo ◽

Yunzhu Huang ◽

Dionysios D. Dionysiou

Keyword(s):

Plasma Reactor ◽

Process Intensification ◽

Hybrid Plasma

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Novel Zirconia Composite Coatings Fabricated by Twin Hybrid Plasma Spraying

Materials Science Forum ◽

10.4028/www.scientific.net/msf.475-479.2883 ◽

2005 ◽

Vol 475-479 ◽

pp. 2883-2886

Author(s):

Heji Huang ◽

Keisuke Eguchi ◽

Makoto Kambara ◽

Toyonobu Yoshida

Keyword(s):

Plasma Spraying ◽

Thermal Plasma ◽

Composite Coatings ◽

Layered Composite ◽

Zirconia Coating ◽

System A ◽

Thermal Plasma Spraying ◽

Optimization Study ◽

Hybrid Plasma ◽

Microscopic Techniques

With a newly established 300kW twin hybrid plasma spraying system, a peculiar layered composite zirconia coating was successfully deposited. The coating is consisting of splats and dendritic columns, which come from thermal plasma spraying and thermal plasma PVD, respectively. A 120µm-thick composite coating was deposited in 10 minutes at the corresponding growth rate of 100µm/min, if the rotation of the substrates is considered. The microstructure of such composite coatings has been characterized using a variety of microscopic techniques as part of a process optimization study.

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