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Journal articles on the topic 'Plasma coating process'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Samal, Sneha, Jakub Zeman, Stanislav Habr, Oliva Pacherová, Jaromír Kopeček, and Petr Šittner. "Preparation and Characterization of Multilayer NiTi Coatings by a Thermal Plasma Process." Materials 17, no. 3 (2024): 694. http://dx.doi.org/10.3390/ma17030694.

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The deposition of multilayer coating of NiTi is carried out by a thermal plasma spraying process on a stainless steel substrate. The deposition of melted NiTi particles creates an adhesion layer on the substrate with the subsequent formation of multilayer coating with a certain thickness. Six layers of coating are created to achieve a certain thickness in terms of the sprayed sample. This paper aims to investigate multilayer NiTi coatings created through a thermal plasma process. The key variable feed rate was considered, as well as its effect on the microstructure characteristics. The shape m

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2

Sikdar, Soumya, Pramod V. Menezes, Raven Maccione, Timo Jacob, and Pradeep L. Menezes. "Plasma Electrolytic Oxidation (PEO) Process—Processing, Properties, and Applications." Nanomaterials 11, no. 6 (2021): 1375. http://dx.doi.org/10.3390/nano11061375.

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Plasma electrolytic oxidation (PEO) is a novel surface treatment process to produce thick, dense metal oxide coatings, especially on light metals, primarily to improve their wear and corrosion resistance. The coating manufactured from the PEO process is relatively superior to normal anodic oxidation. It is widely employed in the fields of mechanical, petrochemical, and biomedical industries, to name a few. Several investigations have been carried out to study the coating performance developed through the PEO process in the past. This review attempts to summarize and explain some of the fundame

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3

Kriba, Ilhem, and A. Djebaili. "The Interaction between Particles and a Plasma Beam in the Thermal Projection Process." Advanced Materials Research 83-86 (December 2009): 801–9. http://dx.doi.org/10.4028/www.scientific.net/amr.83-86.801.

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Plasma spray processes have been widely used to produce high performance coatings of a wide range of Materials (metallic, non-metallic, ceramics), offering protection from, eg. wear, extreme temperature, chemical attack and environmental corrosion. To obtain good quality coatings, spray parameters must be carefully selected. Due to the large variety in process parameters, it is difficult to optimize the process for each specific coating and substrate combinations. Furthermore modelling the spray process allows a better understanding of the process sequences during thermal spraying. Good agreem

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4

Zhang, Miao, Yu Zhang, Pengyu Dai, Lin Zhao, Liping Wu, and Shendian Li. "Study on the Process Parameters and Corrosion Resistance of FeCoNiCrAl High Entropy Alloy Coating Prepared by Atmospheric Plasma Spraying." Materials 18, no. 7 (2025): 1396. https://doi.org/10.3390/ma18071396.

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FeCoNiCrAl high-entropy alloy (HEA) coating was prepared by air plasma spraying, and the coating’s morphology and properties under different power parameters were analyzed. The results show that the spraying power significantly affects the morphology of the coating during plasma spraying. The molten droplets formed during the preparation process of HEA coatings tend to combine with oxygen, with aluminum bonding particularly strongly with oxygen, resulting in the presence of aluminum oxide within the coating, while other elements exhibit weaker bonding with oxygen. The optimal spraying power is

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Niu, Ya Ran, Xuan Yong Liu, and Chuan Xian Ding. "Comparison of Silicon Coatings Deposited by Vacuum Plasma Spraying (VPS) & Atmospheric Plasma Spraying (APS)." Materials Science Forum 510-511 (March 2006): 802–5. http://dx.doi.org/10.4028/www.scientific.net/msf.510-511.802.

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In this work, silicon coatings were deposited using VPS and APS technologies. Their structure and composition were characterized using XPS, SEM, and XRD. The porosity and surface-roughness of coatings were evaluated. The results showed that the VPS silicon coating possessed lower porosity compared with the APS silicon coating. The APS silicon coating surface was almost all covered by many small particles whose size is about 100 nm. The Si 2p XPS spectra indicated that silicon oxide existed in both coatings. The oxidation may have occurred during the plasma spray process. However, the VPS proce

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Ho, Wei Yu, Hui Chu Chen, Chi Lung Chang, Da Yung Wang, and Woei Yun Ho. "Surface Modification of CrN Coating by Plasma Oxidation Process." Key Engineering Materials 373-374 (March 2008): 371–74. http://dx.doi.org/10.4028/www.scientific.net/kem.373-374.371.

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In this study, the CrN coating was first deposited on tool steels by cathodic arc evaporation technique and then this coating was subjected to oxygen glow discharge to activate the oxidation process in order to form oxide layer on the surface of the CrN coating. The varied properties of CrN coatings with or without oxidation treatment were studied in terms of hardness, adhesion, microstructure and surface morphology by using XRD, AFM, Rockwell indentation, Nano-indentation tests. The result turned out that the effect of the plasma oxidation process on the hardness of CrN coating was improved d

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Lin, Tzu-Ken, Dong-Sing Wuu, Shih-Yung Huang, and Wei-Kai Wang. "Preparation and Characterization of Sprayed-Yttrium Oxyfluoride Corrosion Protective Coating for Plasma Process Chambers." Coatings 8, no. 10 (2018): 373. http://dx.doi.org/10.3390/coatings8100373.

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This study investigates the microstructure, mechanical and electrical properties of dense yttrium oxyfluoride (YOF) coatings fabricated by the atmospheric plasma spraying technique. Transmission electron microscopy and X-ray diffraction analysis revealed a well crystallized YOF coating with preferred orientations. The YOF coatings were more porous (approximate porosity 0.5%), with higher hardness (290 ± 30 HV), lower electrical resistivity (1016 Ω⋅cm), and breakdown voltage (5.57 kV), than conventional yttrium-fluoride plasma-protective coating. These results indicate the potential of the YOF

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8

Vu, Duong, and Ha Minh Hung. "Predictive Modeling of Porosity in Al₂O₃–TiO₂ Ceramic Coatings Produced by Plasma Spraying." SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) 6, no. 1 (2025): 181–94. https://doi.org/10.12928/spekta.v6i1.10985.

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Background: Plasma spraying is a proven technique for applying ceramic coatings to enhance the mechanical and chemical resistance of components exposed to abrasive and corrosive environments. However, controlling coating porosity remains a critical factor that directly affects the coating's performance and lifespan. Contribution: This study contributes to the field by developing a predictive model that quantifies the influence of key plasma spraying parameters on the porosity of Al₂O₃–TiO₂ coatings. The model enables process optimization and quality control for applications requiring high-perf

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9

Carradò, Adele. "Development of Bioactive Hydroxyapatite Coatings on Titanium Alloys." Key Engineering Materials 533 (December 2012): 183–93. http://dx.doi.org/10.4028/www.scientific.net/kem.533.183.

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Bioactive coatings are currently manufacturing using plasma-sprayed technique on metal implant surfaces in order to optimize bone-implant interactions. Nevertheless, some problems exist with coating process, e.g. poor interfacial adhesion, modification of coating properties, and the lack of an existing coating standard. In order to overcome some of the problems with the plasma-spraying process, researchers are investigating other experimental coating methods to enhance the adhesion and to control the coating properties. This paper will discuss the advantages and disadvantages of plasma sprayin

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10

Novak, R. C. "Processing Aspects of Plasma Sprayed Ceramic Coatings." Journal of Engineering for Gas Turbines and Power 110, no. 4 (1988): 617–20. http://dx.doi.org/10.1115/1.3240180.

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Experimental studies are described that demonstrate that variation in plasma spray process parameters has a substantial effect on the fundamental mechanical, thermal, and physical properties of ceramic coatings. This property variation is shown to influence the behavior of the coatings under rig tests that simulate exposure in gas turbine engines. Illustrative examples are given to demonstrate the value of the designed experiment approach to understanding the coating process/coating behavior interaction. Finally, statistical process control methods are discussed and shown to be useful for iden

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11

Smolentsev, Evgeniy, Anvar Kadyrmetov, and Mikhail Kondratyev. "Optimization of process of application plasma hardening coating." MATEC Web of Conferences 224 (2018): 03009. http://dx.doi.org/10.1051/matecconf/201822403009.

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This article addresses the problem of increasing tool life by applying a wear-resisting coating. However, the lack of technology-based methods and optimal regimes complicate this process. A method for finishing plasma hardening of metals which allows evaluate the quality of the wear-resistant thin-film coatings and optimize application regimes have been advanced.

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Mrdak, Mihailo, Darko Bajić, Darko Veljić, and Marko Rakin. "CHARACTERISATION OF BIOMEDICAL TITANIUM LAYERS DEPOSITED BY A VACUUM PLASMA SPRAY PROCESS." Materiali in tehnologije 55, no. 2 (2021): 231–35. http://dx.doi.org/10.17222/mit.2020.135.

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In this paper we will describe the process of the deposition of thick layers of VPS-Ti coating, which is used as a bonding layer for the upper porous Ti coatings on implant substrates. In order to deposit the powder, we used HÖGANÄS Ti powder labelled as AMPERIT 154.086 -63 µm. In order to test the mechanical properties and microstructure of the VPS-Ti coating, the powder was deposited on Č.4171 (X15Cr13 EN10027) steel substrates. Mechanical tests of the microhardness of the coating were performed by the Vickers hardness test method (HV0.3) and tensile strength by measuring the force per unit

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13

Kubicki, Grzegorz, Volf Leshchynsky, Ahmed Elseddawy, et al. "Microstructure and Properties of Hydroxyapatite Coatings Made by Aerosol Cold Spraying–Sintering Technology." Coatings 12, no. 4 (2022): 535. http://dx.doi.org/10.3390/coatings12040535.

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Hydroxyapatite is a widely used material used for the bioactivation of an implant’s surface. A promising hydroxyapatite coating approach is the kinetic deposition of powder particles. The possibility of solid-state deposition improvement through the merging of Aerosol Deposition and Low Pressure Cold Spraying techniques is a promising prospect for improving the deposition efficiency and the quality of coatings. The objective of the paper is to study the possibilities of hydroxyapatite coating structure modification through changes in the coating process and post-heat treatment. The novel Aeros

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14

Swain, Biswajit Kumar, Soumya Sanjeeb Mohapatra, Ashutosh Pattanaik, et al. "Sensitivity of Process Parameters in Atmospheric Plasma Spray Coating." Journal of Thermal Spray and Engineering 1, no. 1 (2018): 1–6. http://dx.doi.org/10.52687/2582-1474/111.

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Atmospheric plasma spraying (APS) is one of the most widely used thermal spraying technique which finds a lot of applications due to its versatility of spraying a wide range of materials from metallic to nonmetallic and hence more suitable for spraying of high melting point materials like refractory ceramics material, cermets etc. In recent era,any material can be used for plasma spraying on almost any type of substrate. Process parameters are the key factor that affects the formation of microstructures, bonding of coating with substrate and mechanical strength of coating. In this paper, the p

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15

Futamata, Masami, Xiaohui Gai, Toyokazu Mizumoto, and Kimio Nakanishi. "Improvement of Solution Type Plasma Spraying Process." Materials Science Forum 502 (December 2005): 505–10. http://dx.doi.org/10.4028/www.scientific.net/msf.502.505.

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To fabricate thermal spraying coatings with good reproducibility, it is necessary to improve the process of the equalization of both thermal history and impacting behavior of the particles. In this study, the characteristics of the solution type plasma spraying using the hollow-cathode type torch are investigated. The physical and mechanical properties that are different from usual thermal spraying coatings are described. By using solutions including metal ingredients in a state of ion, colloid or sol, thinner coating that cannot be made by conventional plasma spraying methods is formed on var

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16

Abraham, D. S. Manoj, H. Kanagasabapathy, S. Kartheesan, and M. C. Shaji. "Dry Sliding Wear Behaviour of Al 7075 T6 Coated by Plasma Spray Process." Advanced Materials Research 984-985 (July 2014): 551–56. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.551.

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-Al7075 T6 alloys are widely used in the aircraft, automotive and die and mold making industry, yet at any time aluminium components should be designed with a third body or in an harsh environment they must be protected with an overlying coating inorder to increase their useful lifespan and improve their surface performance especially in wear and corrosion. The most wide spread technique used to modify the surface properties of Al7075 T6 among them one of the most promosing technology is plasma spraying. It is widely used to manufacture anti-wear and anti-corrosion coatings on to a large class

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17

Zhang, Chun Hua, Lin Qi, Fang Hu, Song Zhang, and Mao Cai Wang. "Study of WC Particles Dissolved by Plasma Surfacing." Advanced Materials Research 299-300 (July 2011): 193–96. http://dx.doi.org/10.4028/www.scientific.net/amr.299-300.193.

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Specific coatings are frequently used for increasing the life of mechanical parts undergoing severe corrosive and wearing environment. Plasma surfacing has been used to produce high quality coatings with the rapid development of coating technology. In this paper, the dissolution process of WC particles during the plasma surfacing with Fe-based and tungsten carbides composite coatings on AISI 316L stainless steel was studied .The dissolution process of WC particles is investigated by SEM, EDS and phenomenological analysis. Results show that the dissolution of WC particle during the plasma surfa

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18

Song, Je-Boem, Eunmi Choi, Seong-Geun Oh, Jin-Tae Kim, and Ju-Young Yun. "Contamination Particle Behavior of Aerosol Deposited Y2O3 and YF3 Coatings under NF3 Plasma." Coatings 9, no. 5 (2019): 310. http://dx.doi.org/10.3390/coatings9050310.

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The internal coatings of chambers exposed to plasma over a long period of time are subject to chemical and physical damage. Contamination particles that are produced by plasma damage to coatings are a major contribution to poor process reliability. In this study, we investigated the behavior of contamination particles produced from plasma damage to Y2O3 and YF3 protective coatings, which were applied by an aerosol deposition method. The coating materials were located at the powered electrode, the grounded electrode, and the grounded wall, which were exposed to a NF3 plasma. The mass loss at th

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19

Li, Wen Sheng, and Yi Liu. "Effect of Ce on Wear Behavior of Plasma Spray Welded Novel Aluminum Bronze Coatings." Advanced Materials Research 418-420 (December 2011): 831–34. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.831.

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Aluminum bronze powders with free and 0.1wt%Ce were plasma spray welded on 45# carbon steel substrate, Effects of rare earth Ce on the microstructure and wear resistance of plasma spray welded novel aluminum bronze coatings were investigated. Tribological properties of coatings were tested on reciprocating sliding tester. Results showed that a small amount of Ce (0.1wt %) in novel aluminum bronze coating can refine the coating microstructure and the coating with 0.1wt%Ce process higher wear resistance compared to the Ce-free coating. Both of the coatings have different wear mechanisms.

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20

Kriba, Ilhem R., and A. Djebaili. "Modelling Sequential Impact of Molten Droplets on a Solid Surface in Plasma Spray Process." Advanced Materials Research 227 (April 2011): 111–15. http://dx.doi.org/10.4028/www.scientific.net/amr.227.111.

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Plasma spray deposition is one of the most important technologies available for producing the high-performance surfaces required by modern industry. In this process, powder of the coating material is fed into high-temperature plasma, which melts and accelerates the powder; the molten particles subsequently hit and solidify on the surface to be coated. To obtain good quality coating, the powder particle must be at least partially molten and hit the substrate with a high velocity. The flattening characteristics of the droplets impinging on a substrate are important determinants in governing the

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21

Wijono, Bob Alvin Sidabutar, and Waru Djuriatno. "Pelapisan Logam Menggunakan Plasma." Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan 10, no. 2 (2019): 129–34. http://dx.doi.org/10.48056/jintake.v10i2.57.

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One of the ways to improve the quality of the material is by using the thin layer deposition techniques on the material surface. DC magnetron sputtering is one of the methods frequently used to do so. This method uses plasma to create a thin layer on the material's surface. In this research, flyback circuit is used to generate plasma. This research examines the effects of electrodes’ gap and sputtering process time on the width of marks that appear on the substrate’s surface. The electrodes’ gap varies in range of 1, 2, 3, and 4 cm, whereas the sputtering process time varies in range of 36, 72

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22

Mostaghimi, Javad, and Sanjeev Chandra. "Splat formation in plasma-spray coating process." Pure and Applied Chemistry 74, no. 3 (2002): 441–45. http://dx.doi.org/10.1351/pac200274030441.

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The paper describes recent developments in modeling formation of plasma-spray coatings. This is a stochastic process in which particle-impact conditions, thermophysical properties, substrate topology, and temperature all play important roles in determining the structure of coating. Specific attention is paid to the simulation of droplet impact and solidification under plasma-spraying conditions. Results of 3-dimensional models show that on a flat surface solidification may cause splashing and break-up of the impacting particle. Undercooling effects result in faster solidification and, thus, sm

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23

Lu, Sheng, Yan Chen, Zhi Ping Weng, and Jing Chen. "Process and Corrosion Resistance of Plasma-Sprayed NiCoCrAlY/(Al₂O_3-13%TiO₂) Coatings on AZ91D Magnesium Alloy." Advanced Materials Research 339 (September 2011): 575–78. http://dx.doi.org/10.4028/www.scientific.net/amr.339.575.

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Plasma spraying process was carried out to prepare NiCoCrAlY bonding coating and Al2O3-13%TiO2 ceramic coating on AZ91D magnesium alloy by orthogonal experiments. The microstructural characteristics and properties of coating were investigated by SEM，tests of tensile, electrochemical method and weight loss. The results reveal that spraying power is the most important processing parameter to affect the bonding strength of the coating. The corrosion resistance of magnesium alloy is remarkably improved by plasma-sprayed NiCoCrAlY/(Al2O3-13%TiO2) coatings, especially when the coatings were sealed w

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Li, J. J., Y. F. Zhang, Q. Li, X. Y. Ran, Q. Hao, and X. L. Guo. "Influence of atmospheric plasma spraying process parameters on microstructure and properties of yttrium oxide coatings." Digest Journal of Nanomaterials and Biostructures 19, no. 1 (2024): 1–13. http://dx.doi.org/10.15251/djnb.2024.191.1.

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Y2O3 coatings were fabricated on using atmospheric plasma spraying (APS). The effects of different process parameters on the microstructure and properties of the coating were analyzed. The results show that the overall morphology of Y2O3 coatings are smooth at high spraying power, low spraying distance and low primary gas flow rate, which is consistent with the change trend of porosity and hardness. The minimum porosity of coating is about 1.4%. The roughness of coatings isn’t sensitive to changes in parameters. Y2O3 coatings have excellent corrosion resistance. The smaller the porosity of Y2O

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Zhao, J. F., Yong Li, and L. Wang. "Nano-SiC Particles Reinforced Plasma Sprayed WC-Co Coating by Laser Melting Process." Key Engineering Materials 315-316 (July 2006): 575–78. http://dx.doi.org/10.4028/www.scientific.net/kem.315-316.575.

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The laser-melting process of SiC nano-particles coated on the plasma sprayed WC-Co coating was performed. The SiC nanocomposite coating was prepared, and the microstructure and the mechanical properties of it were investigated. After laser irradiated, parts of nano SiC particles are turned into the inner of coating with the nano-micro composite structure. The being of SiC nano-particles in coating brings the better fine microstructure and the higher densification. The wear-resistant property and the corrosion-resistant property of the coating with SiC nano-particles are improved more than the

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Shen, De Jiu, Wei Chao Gu, Yu Lin Wang, Guang Zhong Xing, and Philip Nash. "Surface Morphology and Discharge Channel Temperature Estimation of PEO Ceramic Coatings on Aluminum." Materials Science Forum 546-549 (May 2007): 1135–40. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.1135.

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The surface roughness and morphology of the ceramic coatings fabricated on industrially pure aluminum by the plasma electrolytic oxidation (PEO) technique with a hetero-polar pulsed current ceramic synthesizing system were investigated. A model for the process was established. Based on this a formula was deduced to estimate the temperature rise rate at the corresponding locations before the plasma discharge channels have formed during the PEO process, and the channels’ temperature when the plasma discharges occur. Results show that the PEO ceramic coatings grow by an alternating coating meltin

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Mifune, Noriyuki, and Yoshio Harada. "2CaO･SiO₂-CaO･ZrO₂ Thermal Barrier Coating Formed by Plasma Spray Process." Materials Science Forum 522-523 (August 2006): 239–46. http://dx.doi.org/10.4028/www.scientific.net/msf.522-523.239.

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The applicability of 2CaO·SiO2-CaO·ZrO2 ceramic coatings as thermal barrier coatings (TBCs) was investigated. Coatings consisting of various ratios of 2CaO·SiO2-CaO·ZrO2 bond-coated with NiCrAlY were prepared using the plasma spray process. The structure of the coatings was characterized by scanning electron microscopy and X-ray diffraction analysis. The resistance of the coatings to thermal shock was evaluated with acoustic emission techniques under a thermal cycle from 1273 K to room temperature, and the hot corrosion resistance of the coatings was investigated with V2O5 and Na2SO4 at 1273 K

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Goral, Marek, Slawomir Kotowski, and Jan Sieniawski. "The Technology of Plasma Spray Physical Vapour Deposition." High Temperature Materials and Processes 32, no. 1 (2013): 33–39. http://dx.doi.org/10.1515/htmp-2012-0051.

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AbstractThe article presents a new technology of thermal barrier coating deposition called Plasma Spray – Physical Vapour Deposition (PS-PVD). The key feature of the process is the option of evaporating ceramic powder, which enables the deposition of a columnar ceramic coating. The essential properties of the PS-PVD process have been outlined, as well as recent literature references. In addition, the influence of a set of process conditions on the properties of the deposited coatings has been described. The new plasma-spraying PS-PVD method is a promising technology for the deposition of moder

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KOECH, Pius Kibet, and Chaur Jeng WANG. "Performance Characteristics of Hot-dip and Plasma Spray Aluminide Coated Nickel-Based Superalloy 718 under Cyclic Oxidation in Water Vapour." Materials Science 25, no. 4 (2019): 413–21. http://dx.doi.org/10.5755/j01.ms.25.4.21334.

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Aluminium coating due to its ability to form stable alumina oxide scale are commonly used to protect materials such as inconel 718 superalloys at high operational temperatures. Relevant properties of the oxide scale formed; growth rate and coating adherence is not only determined by the composition of the coating material used but is also influenced by the coating manufacturing process and the test condition. In the present work, effect of water vapour and thermocycling commonly prevailing on the morphology and composition of the alumina scales formed during high temperature oxidation was stud

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Kravchenko, Igor N., Yurii A. Kuznetsov, Vladimir V. Goncharenko, and Larisa V. Kalashnikova. "Investigation of Influence of Plasma Spraying Process Parameters on the Level of Residual Stresses." Key Engineering Materials 864 (September 2020): 198–203. http://dx.doi.org/10.4028/www.scientific.net/kem.864.198.

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The method to determine thermal fields considering dependence of thermophysical and mechanical properties of coating materials and a base from the temperature, the running of plastic deformations and stresses relaxation at plasma spraying is suggested. The mathematical model of calculation of thermal field with moving boundary considering nonlinear feature of coating growth at layer-by-layer deposition and dependences from thermophysical properties of materials of the system «coating-base» is developed. The model application helps to estimate the effect of the parameters of plasma spraying pro

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Bhatia, Tania, Alper Ozturk, Liangde Xie, et al. "Mechanisms of ceramic coating deposition in solution-precursor plasma spray." Journal of Materials Research 17, no. 9 (2002): 2363–72. http://dx.doi.org/10.1557/jmr.2002.0346.

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The solution-precursor plasma spray (SPPS) method is a new process for depositing thick ceramic coatings, where solution feedstock (liquid) is injected into a plasma. This versatile method has several advantages over the conventional plasma spray method, and it can be used to deposit nanostructured, porous coatings of a wide variety of oxide and non-oxide ceramics for a myriad of possible applications. In an effort to understand the SPPS deposition process, key diagnostic and characterization experiments were performed on SPPS coatings in the Y2O3-stabilized ZrO2 (YSZ) system. The results from

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Waki, Hiroyuki, Izuru Nishikawa, and K. Ogura. "Observation of Heat Cycle Delamination Process with Surface Strain Measurement in Thermal Barrier Coating." Key Engineering Materials 261-263 (April 2004): 453–58. http://dx.doi.org/10.4028/www.scientific.net/kem.261-263.453.

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A surface strain measurement approach to understanding of delamination processes of thermal barrier coatings (TBCs) under heat cycle conditions was described in this paper. Heat cycle tests between the high temperature ranged from 1473K to 1073K and the relatively low temperature (573K) was carried out on thermal barrier coated type 304 stainless steel specimens. 8mass%Y2O3- ZrO2 and Al2O3 coatings were used for the TBCs. The surface strain behavior during the heat cycle test was measured using a laser speckle strain/displacement gauge (SSDG). It was found that the thermal expansion of a subst

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Kubaszek, Tadeusz, Maciej Pytel, and Marek Góral. "The Influence of LPPS Process Parameters on Porosity and Microstructure of MCrAlY Coatings." Materials Science Forum 844 (March 2016): 181–86. http://dx.doi.org/10.4028/www.scientific.net/msf.844.181.

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In present article the influence of Low Pressure Plasma Spraying (LPPS) process parameters on microstructure of MCrAlY coatings was studied. Nowadays the Atmospheric Plasma Spray (APS) is the most widely used process to obtain MCrAlY-type coatings. The LPPS process may be consider as an alternative technology for deposition of this type coatings which have less porosity and smaller amount of oxides compared to APS coatings. This features are important to obtain coatings with better hot corrosion and oxidation resistance. In order to determine and optimize the process parameters the microscopic

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Mahsa, Amiri, Padervand Saman, Tavakoli Targhi Vahid, and Mohammad Mousavi Khoei Seyed. "Investigation of aluminum oxide coatings created by electrolytic plasma method in different potential regimes." Journal of Composites and Compounds 2, no. 3 (2020): 115–22. https://doi.org/10.29252/jcc.2.3.2.

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One of the most important coating methods on aluminum surfaces is the electrolytic plasma method. The main objective of the present study is to investigate the potential of aluminum oxide coatings created by electrolytic plasma method. Aluminum series 2 and the electrolyte of sodium silicate, sodium tetraphosphate, sodium aluminate, and potassium hydroxide were used. The results showed that the appropriate voltage to achieve uniform coating with ideal thickness and morphology is 500 V. Adding sodium silicate to the electrolyte solution will create porosity and non-adhesion to the substrate. On

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Arunish, Mangla*1 Vikas Chawla2 and Gurbhinder Singh3. "COMPARATIVE STUDY OF HOT CORROSION BEHAVIOR OF HVOF AND PLASMA SPRAYED NI20CR COATING ON SA213(T22) BOILER STEEL IN NA2SO4-60%V2O5 ENVIRONMENT." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 10 (2017): 674–86. https://doi.org/10.5281/zenodo.1037655.

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Material deterioration is a major issue in various high temperature applications. So it is important to understand the mechanism of hot corrosion in metals/alloys at high temperatures and to provide the protective coating for their economic, reliable and safe operation. Nickel based coatings are commonly used for the enhancement of resistance against the hot corrosion. These coatings can be developed by using different thermal spray techniques. The present investigation is an attempt to compare the resistance offered against hot corrosion by Nickel based coating sprayed by two different therma

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Góral, Marek, Tadeusz Kubaszek, Barbara Kościelniak, and Dorota Stawarz. "The Influence of Plasma Spraying Parameters on Microstructure and Porosity of Bronze-Polyester Coatings for Plain Bearings Applications." Solid State Phenomena 355 (February 15, 2024): 117–22. http://dx.doi.org/10.4028/p-fdcdp2.

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The plasma sprayed bronze coatings are widely used for repairing of plain bearing used in different applications. This type of coating was not deeply analyzed in state-of-art publications. In presented article we fill this gap in the case of plasma spraying process. The influence of power current (300/500/700A) and hydrogen flow (0/4/8 NLPM) on microstructure and thickness of aluminium bronze-polyester coating was investigated. The Thermico A60 plasma torch was used for thermal spray process of coating on flat carbon steel samples (grade S355). The Metco 604NS was sprayed with 20g/min powder f

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Pytel, Maciej, Tadeusz Kubaszek, Paweł Pędrak, Marek Góral, and Marcin Drajewicz. "The Influence of Process Parameters on Structure of YSZ Coating Deposited by Plasma Spraying on AISI 316L Stainless Steel Surface by APS Method and on Ti6Al4V Titanium Alloy Surface by PS-PVD Method." Materials Science Forum 1016 (January 2021): 1166–74. http://dx.doi.org/10.4028/www.scientific.net/msf.1016.1166.

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The plasma spraying is commonly used in medical application. The Atmospheric Plasma Spray (APS) method was applied for production of yttria-stabilized zirconia (YSZ) on AISI 316L stainless steel surface and also on Ti6Al4V titanium alloy surface. In present article two examples of coatings production were presented. In first experimental the YSZ was plasma sprayed (APS) on 316L stainless steel surface. The coating was deposited using A60 (Thermico) plasma torch. The initial parameters were selected and it was concluded that minimal power current was 500A. The thickness of obtained coating was

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Sebastian, Jobin, Abyson Scaria, and Don George Kurian. "Development & Characterization of Alumina Coating by Atmospheric Plasma Spraying." Applied Mechanics and Materials 877 (February 2018): 104–9. http://dx.doi.org/10.4028/www.scientific.net/amm.877.104.

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Ceramic coatings are applied on metals to prevent them from oxidation and corrosion at room as well as elevated temperatures. The service environment, mechanisms of protection, chemical and mechanical compatibility, application method, control of coating quality and ability of the coating to be repaired are the factors that need to be considered while selecting the required coating. The coatings based on oxide materials provides high degree of thermal insulation and protection against oxidation at high temperatures for the underlying substrate materials. These coatings are usually applied by t

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Geng, Zhanji, Feng Liu, and Yuping Wang. "Wear Resistance of WC-10Co-4Cr Cemented Carbide Coatings Prepared by Atmospheric Plasma Spraying and Laser Cladding." Metals 15, no. 3 (2025): 309. https://doi.org/10.3390/met15030309.

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This paper adopts an atmospheric plasma spraying and laser cladding process to prepare WC-10Co-4Cr cemented carbide coatings on the substrate surfaces of 304 stainless steel and 316 stainless steel, respectively, and comparatively analyzes the microstructures, phase compositions, average hardness, and friction and wear performances of the coatings prepared under the two processes. The analysis showed that the plasma sprayed coating showed a lamellar structure, and the interface between the coating and the substrate was mechanically occluded, while the laser melting coating showed a dendritic s

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Komlev, D. I., V. I. Kalita, A. A. Radiuk, A. Iu Ivannikov, and A. S. Baikin. "Adhesion of plasma coatings of hydroxyapatite." Perspektivnye Materialy 11 (2020): 26–33. http://dx.doi.org/10.30791/1028-978x-2020-11-26-33.

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Hydroxyapatite coatings were sprayed with an arc plasma torch argon-nitrogen plasma at a power of 25 kW from a powder with a particle size of 25 – 63 μm at a distance of 95 mm. The samples to which the coatings were applied were preheated in a resistance furnace in an air atmosphere to temperatures in the range of 20 to 600 °C before being sprayed. The adhesion of the plasma coating from hydroxyapatite to the titanium substrate was determined on the pin specimens. The maximum average adhesion value was recorded when the titanium substrate was preheated to a temperature of 550 °C. The results o

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Peng, Ru Zhen, Gang Xie, Yan Qing Hou, Lin Tian, and Xiao Hua Yu. "Microstructure and Property of Plasma Sprayed TiB₂ Wettable Coatings on Carbon Cathodes." Advanced Materials Research 881-883 (January 2014): 1580–83. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.1580.

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In this work, fine-lamellar structured TiB2 ceramic wettable cathode coatings were deposited on carbon cathodes of aluminium oxide reduction cells by atmosphere plasma spraying (APS). Cathode carbon blocks consisting of coatings 800 μm thick of plasma sprayed TiB2 finepowder on carbon substrate were fabricated. In order to investigate the results of coating, the microstructure and phase composition of the wettable cathode coating were characterized by scanning electron microscopy (SEM). It is found that TiB2 fine-powders were partly oxidized during the plasma spraying process. The coating was

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Ozabaci, Murat, Tanju Teker, and S. Osman Yılmaz. "Microstructure and wear analysis of CoWC alloy layers deposited by PTA process." Metallurgical Research & Technology 120, no. 2 (2023): 211. http://dx.doi.org/10.1051/metal/2023007.

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CoWC composite coatings were produced on AISI 430 steel by the plasma transfer arc cladding. Three different powder mixtures containing WC (90%, 85% and 80%) and Co (10%, 15% and 20%) were used. Phase composition, microstructural characterization and coating properties were investigated by using scanning electron microscope (SEM), energy dispersive spectrometry (EDS), X-ray diffraction (XRD), elemental mapping, hardness and wear test. The wear shape morphology of coatings was determined by SEM. The increased ratio of WC in CoWC powders reduced the degradation of CoWC. The substrate hardness of

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Yu, Jie, Shi Chun Di, Yan Wang, Peng Xiang Lv, and Jun Jie Yang. "Densification Behavior and Microstructure Evolution of Laser Surface Melting Processed Silicon-Containing Micro Arc Oxidation Coating." Advanced Materials Research 941-944 (June 2014): 1650–53. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.1650.

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The present work investigated the effect of laser surface melting (LSM) process on micro arc oxidation (MAO) coating prepared in silicate electrolytes (Si-MAO) and aluminate electrolytes (Al-MAO). Plasma intensity of laser spots, element content and phase constituents of coatings were analyzed. During LSM remelting process, the formation of heat sources and micro molten pools on the surface of MAO coating were discussed. The results showed that the moderate plasma was formed more easily on the Si-MAO than Al-MAO coating, owing to the temperature threshold of melting oxide layer was decreased f

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Sokolov, V. N., M. S. Chernov, V. I. Kalita, D. I. Komlev, and A. A. Radyuk. "The structure and porosity of plasma coatings." Physics and Chemistry of Materials Treatment 5 (2020): 33–43. http://dx.doi.org/10.30791/0015-3214-2020-5-33-43.

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Porous coatings are actively used in engineering practice. The porous coating determines the reliability of the operation of the intricostal implant, the heat transfer process when the aggregate state of the refrigerant is changed. The choice of method for quantitative analysis of porosity is determined by the structure of the coating. In this study, plasma coatings sprayed from powders were analyzed. A porosity of 10.3% inside the alumina coating was analyzed by mercury porosimetry. The main volume of the porosity of the coating is formed by pores ranging in size from 0.13 to 0.36 μm; their s

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Huang, Heji, Keisuke Eguchi, Makoto Kambara, and Toyonobu Yoshida. "Novel Zirconia Composite Coatings Fabricated by Twin Hybrid Plasma Spraying." Materials Science Forum 475-479 (January 2005): 2883–86. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.2883.

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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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Yi, Zeng, Xue Bin Zheng, Heng Ji, Wei Wu, and Soo Wohn Lee. "A Study on Vacuum Plasma Spraying Tungsten Coatings." Materials Science Forum 544-545 (May 2007): 849–52. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.849.

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The W coatings were prepared by applying the vacuum plasma spraying process (VPS). The phase composition, microstructure and laser irradiation property were characterized by XRD, SEM and laser. Results showed that no tungsten oxide appears in the coatings whose phase composition is similar to the original powder. A better melting state of the coating can be obtained by using the finer powder. The deposition efficiency of the coating is higher in the cases of a higher H2 flow. There is a pitch whose size is about 100μm when the substrate was irradiated by laser. However, there is clearly no cha

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Liu, Ming, Hai Jun Wang, Yi Jiang, Yong Ming Guo, and Ke Ke Zhao. "Experimental Analysis on the Environment of Internal Plasma Spraying Techniques." Applied Mechanics and Materials 184-185 (June 2012): 1480–85. http://dx.doi.org/10.4028/www.scientific.net/amm.184-185.1480.

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The effects of internal spraying environment on the microstructures and mechanical properties of plasma spraying NiCrBSi+15%Mo coatings were investigated. For experimental analysis of spraying environment, a specialized internal plasma device and its test unit were developed. Firstly, microstructures of spraying coatings and powders were analyzed by scanning electron microscopy (SEM). Furthermore, the boding strength, porosity and micro-hardness of the coatings were investigated and determined separately. According to these properties of plasma spraying coating, the influence of spraying envir

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Ho, Ching Yen, and Wen Chieh Wu. "Ionic Distribution in Plasma for the Process of Electron-Beam Physical Vapor Deposition." Applied Mechanics and Materials 597 (July 2014): 153–56. http://dx.doi.org/10.4028/www.scientific.net/amm.597.153.

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This paper investigates ionic distribution generated by electron beam (EB) during Physical Vapor Deposition (PVD). EB-PVD has a wide range of applications in thermal barrier coatings (TBCs) due to favorable characteristics compared with other coating processes. EB-PVD is an important material coating method that utilizes electron beams as heat sources to evaporate materials, which are then deposited on a substrate. Therefore EB-induced ionic distribution dominates the quality and thickness of the final coating on the substrate. Assuming the EB-generated plasma to be only a function of radial d

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Wang, Li Mei, Jun Bo Liu, and Jun Hai Liu. "Influence of Process Parameters on Microstructure of Reaction Plasma Cladding TiC-Fe-Cr Coating." Materials Science Forum 1027 (April 2021): 170–76. http://dx.doi.org/10.4028/www.scientific.net/msf.1027.170.

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In order to improve the quality and properties of the coating, a certain amount of Ti was added to the plasma cladding Fe-Cr-C coating in the early stage. And Fe-Cr-C-Ti composite powder was prepared by precursor carbonization-composition process. In situ synthesized TiC-Fe-Cr coatings were fabricated on substrate of Q235 steel by plasma cladding process with Fe-Cr-C-Ti composite powder. Microstructure of the coating with different process parameters, including cladding current, cladding speed, number of overlapping cladding layers, were analyzed by scanning electron microscope (SEM). The resu

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Kravchenko, I. N., S. Yu Zhachkin, E. P. Timashov, G. I. Trifonov, S. V. Kartsev, and S. N. Kuznetsov. "Effect of plasma spraying technological modes on the formation of protective and functional coatings." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 7 (November 30, 2023): 33–37. http://dx.doi.org/10.17073/1683-4518-2023-7-33-37.

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The improvement of the technology of plasma deposition of wear-resistant coatings is shown. At the same time, special attention is paid to one of the most important parameters ― the thickness of the functional layer, since when using plasma deposition methods, it has a significant impact on the quality of coatings, as well as the functionality and productivity of the process. Based on the planning of the experiment, mathematical models have been developed that make it possible to establish the relationship between the coating thickness and the given technological parameters of the plasma spray

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