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Journal articles on the topic 'Plasma Transferred Arc (PTA)'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Qian, Shi Qiang, and Wei Wang. "Investigation of Nano Composite Coating on Aluminum Alloys Treated by Plasma Transferred Arc." Advanced Materials Research 97-101 (March 2010): 1502–5. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.1502.

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Using a combination of high speed jet electrodeposition and plasma transferred arc (PTA) quenching, a nano-TiN/Ni composite coating on 7005 aluminium alloy can be produced. The microstructure, microhardness, friction coefficient and corrosion potential Ecorr of PTA treated specimens were investigated. The results showed that a rapidly solidified microstructure consisting of the uniformly distributed TiN phase and fine Al3Ni2 intermetallic phase was in PTA treated specimens. The results also showed that the composite coating PTA treated has an average microhardness of approximately 800 HV. The

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2

Garcia, Regina Paula, Temístocles Luz, Sheila Cristina Canobre, and Henara Lillian Costa. "Corrosion resistance of plasma transferred arc (PTA) Inconel 625 deposits." Surface Topography: Metrology and Properties 9, no. 2 (2021): 025008. http://dx.doi.org/10.1088/2051-672x/abf1bf.

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3

Lv, Yao Hui, Bin Shi Xu, Yong Hua Xiang, Dan Xia, and Cun Long Liu. "Plasma Transferred Arc Powder Surfacing Technology of Thrust Face." Key Engineering Materials 373-374 (March 2008): 43–46. http://dx.doi.org/10.4028/www.scientific.net/kem.373-374.43.

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The thrust surface of W615 engine is remanufactured by plasma transferred arc (PTA) powder surfacing technology. The Ni15 Nickle-based alloy powder is selected as deposited metal. By optimizing the welding procedure, the coating is free of crack and pore. The microstructure characteristics of deposition layer are investigated by metallographic microscope, and the microhardness of the overlay is measured by vickers hardness tester. It is found that the heat affected zone is narrow, the rate of dilution is low and the microhardness of deposition layer is about HV130 which is close to that of bas

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4

Graf, Karin, and Ana Sofia Clímaco Monteiro D'Oliveira. "PTA hardfacing of Nb/Al coatings." Soldagem & Inspeção 17, no. 2 (2012): 158–65. http://dx.doi.org/10.1590/s0104-92242012000200009.

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Hardfacing is widely applied to components yet the majority of the welding techniques available restrain the variety of hard alloys that can be deposited. Plasma Transferred Arc hardfacing offsets this drawback by using powdered feedstock offering the ability to tailor the chemical composition of the coating and as a consequence its properties. The high strength and chemical inertia of aluminide alloys makes them very suitable to protect components. However, the strong interaction with the substrate during hardfacing requires analysis of each alloy system to optimize its properties and weldabi

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García-Vázquez, F., A. Aguirre, Ana Arizmendi-Morquecho, et al. "Analysis of Weld Bead Parameters of Overlay Deposited on D2 Steel Components by Plasma Transferred Arc (PTA) Process." Materials Science Forum 755 (April 2013): 39–45. http://dx.doi.org/10.4028/www.scientific.net/msf.755.39.

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Plasma Transferred Arc (PTA) process is increasingly used in applications where enhancement of wear, corrosion and heat resistance of metals surface is required. The shape of weld bead geometry affected by the PTA welding process parameters is an indication of the quality of the weld. PTA is a versatile method of depositing high-quality metallurgically fused deposits on relatively low cost surfaces. The overlay deposited is an alloy that is hard and more corrosion resistant than counterparts laid down by Gas Tungsten Arc Welding (GTAW) or Oxy Fuel Welding (OFW) processes. Weld deposits are cha

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Nady, Abdeljalil, Herve Bonnefoy, Vincent Klosek, Marie Helene Mathon, and Alain Lodini. "Neutron Diffraction Residual Stress Evaluation and Numerical Modeling of Coating Obtained by PTA Process." Materials Science Forum 638-642 (January 2010): 594–99. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.594.

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The Stellite 6 hardfacing alloys have been deposited on steel substrate using a Plasma Transferred Arc (PTA) with complex geometry. The residual strain of the PTA technology at the surface of coating layer and the interface were determined by neutron diffraction method. In the present work, a numerical model for the residual stresses formed during the PTA process with physical conditions and mechanical properties using the Abaqus code is analysed. The result reveals that the residual stresses obtained by the numerical simulation are in very good agreement with experimental results by the neutr

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García-Vázquez, F., H. M. Hernández-García, B. Vargas-Arista, A. Aguirre, and E. E. Granda-Gutiérrez. "Influence of Cr and Nb on the Overlay Deposited on D2 Steel by Plasma Transferred Arc Process." Materials Science Forum 793 (May 2014): 11–16. http://dx.doi.org/10.4028/www.scientific.net/msf.793.11.

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Among the different surface treatments used to improve the wear resistance of metallic materials, plasma transferred arc (PTA) is an attractive alternative to conventional techniques due to the intrinsic properties of its higher deposition rate, lower heat input and especially for the wide applicability of materials. The wide range of materials makes it possible to produce metallurgical bonding between the hardfacing layer and substrate material with very low dilution and distortion. Weld deposits are characterized by less level of inclusions, oxides, discontinuities and wear resistance. Metal

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8

Garcia, R. P., S. C. Canobre, and H. L. Costa. "Microabrasion-corrosion resistance of Ni–Cr superalloys deposited by plasma transferred arc (PTA) welding." Tribology International 143 (March 2020): 106080. http://dx.doi.org/10.1016/j.triboint.2019.106080.

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9

Babu, S., V. Balasubramanian, G. Madhusudhan Reddy, and T. S. Balasubramanian. "Improving the ballistic immunity of armour steel weldments by plasma transferred arc (PTA) hardfacing." Materials & Design (1980-2015) 31, no. 5 (2010): 2664–69. http://dx.doi.org/10.1016/j.matdes.2009.11.060.

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10

Matějíček, Jiří, Jakub Antoš, and Pavel Rohan. "W + Cu and W + Ni Composites and FGMs Prepared by Plasma Transferred Arc Cladding." Materials 14, no. 4 (2021): 789. http://dx.doi.org/10.3390/ma14040789.

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Tungsten-based materials are the most prospective candidates for plasma-facing components of future fusion devices, such as DEMO. W-based composites and graded layers can serve as stress-relieving interlayers for the joints between plasma-facing armor and the cooling or structural parts. Coating/cladding techniques offer the advantages of eliminating the joining step and the ability to coat large areas, even on nonplanar shapes. In this work, W + Cu and W + Ni composites were prepared by pulsed plasma transferred arc (PTA) cladding on several different substrates. Optimization of the process w

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11

Łatka, L., and P. Biskup. "Development in PTA Surface Modifications – A Review." Advances in Materials Science 20, no. 2 (2020): 39–53. http://dx.doi.org/10.2478/adms-2020-0009.

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AbstractSurface modification is one of the most intensively studied issue of technology, which is related to the almost all branches of industry. Since more than 100 years the huge number of methods has been developed and are still in growth. On this field the plasma transferred arc (PTA) hardfacing and surfacing is one of the most frequently used group of the method. The development of this method is going in three ways: (i) modification of the classic technique and the equipment, (ii) development in new materials, especially with the nanometric size and (iii) replacement dangerous materials

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12

Will, Cristhian Ramos, André Ricardo Capra, Anderson Geraldo Marenda Pukasiewicz, Joceli da Guia Chandelier, and Ramón Sigifredo Cortés Paredes. "Estudo comparativo de três ligas austeníticas com cobalto resistentes à cavitação depositadas por plasma pulsado térmico." Soldagem & Inspeção 15, no. 1 (2010): 52–60. http://dx.doi.org/10.1590/s0104-92242010000100007.

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A necessidade de diminuição dos tempos de parada e custos de manutenção de turbinas geradoras de energia elétrica tem motivado o desenvolvimento de novos materiais e processos de recuperação de áreas cavitadas. Atualmente diferentes processos automatizados de soldagem vêm sendo estudados, principalmente a soldagem por plasma de arco transferido, PTA (plasma transferred arc), em substituição à soldagem FCAW (flux cored arc welding). O processo PTA apresenta como principais vantagens a baixa diluição, estreita zona termicamente afetada, excelente estabilidade de arco e baixo índice de respingos,

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HAYASHI, Chitoshi, Takeshi SHINODA, and Yoshihisa KATO. "422 Fundamental Study on Rapid Tooling Method Using Plasma Transferred Arc." Proceedings of the Materials and processing conference 2000.8 (2000): 313–14. http://dx.doi.org/10.1299/jsmemp.2000.8.313.

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14

Maslarevic, Aleksandar, Gordana Bakic, Milos Djukic, Bratislav Rajicic, and Vesna Maksimovic. "Characterization of a coating 316L applied by plasma transferred arc." Chemical Industry 72, no. 3 (2018): 139–47. http://dx.doi.org/10.2298/hemind170928005m.

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Parts of industrial machines and structures are often exposed to the action of aggressive environments, which in a short period of time can provoke the loss of their integrity. It is well known that for extending the service life against erosion and corrosion, protection of the exposed structure zone by coating is frequently used. Various application methods of protective coatings are applied, and the most common are welding and thermal spraying processes. The aim of this study was characterization of coatings made of stainless steel 316L, widely used in chemical and petrochemical industries.

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15

Chen, Bo, Yi Li, Cai Tang, Hui Ji Fan, and Peng Xiao Zhu. "Microstructure and Wear Properties of Fe-Based Alloy Coating." Advanced Materials Research 997 (August 2014): 570–73. http://dx.doi.org/10.4028/www.scientific.net/amr.997.570.

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Fe-based alloy coatings were produced by the plasma transferred arc(PTA) at arc current values of 90A,100A,110A and 120A. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and optical microscopy (OM) were used to characterize the microstructure of the coatings. The wear resistances of the coatings were tested by impact and wear experiment. The results show that, the coating and substrate are metallurgy combination, and the coating modified at 110A shows that better wear resistance than others.

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Demian, Camélia, Alain Denoirjean, Lech Pawłowski, Paule Denoirjean, and Rachida El Ouardi. "Microstructural investigations of NiCrAlY + Y2O3 stabilized ZrO2 cermet coatings deposited by plasma transferred arc (PTA)." Surface and Coatings Technology 300 (August 2016): 104–9. http://dx.doi.org/10.1016/j.surfcoat.2016.05.046.

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17

Kalyankar, Vivek D., and Hardik V. Naik. "Overview of metallurgical studies on weld deposited surface by plasma transferred arc technique." Metallurgical Research & Technology 118, no. 1 (2021): 111. http://dx.doi.org/10.1051/metal/2020088.

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Research on plasma transferred arc (PTA) coatings has increased contemplation due to its augmented appropriateness which results from the advanced materials used in applications like mining, petroleum and power plant sectors. This article further broadens the research scope of investigation, by influencing metallurgical and processing aspects in accordance with the significance of microstructural changes. Martensitic formation with coarser structure, carbide phase formation and fine interdendritic eutectic matrix are the significant metallurgical aspects for an improved surface characteristic.

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18

Žikin, Arkadi, Irina Hussainova, Christian Katsich, Priit Kulu, and Dmitri Goljandin. "Wear Behaviour of Recycled Hard Particle Reinforced NiCrBSi Hardfacings Deposited by Plasma Transferred Arc (PTA) Process." Key Engineering Materials 527 (November 2012): 179–84. http://dx.doi.org/10.4028/www.scientific.net/kem.527.179.

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The main goal of present work was to study room temperature wear behaviour of advanced cermet particle reinforced hardfacings. For this purpose three different recycled powders: WC-Co, TiC-NiMo and Cr3C2-Ni were used as reinforcements for the commercially used NiCrBSi matrix alloy. Plasma transferred arc hardfacing process was used for deposition of the hardfacings. Manufactured hardfacings show only average wear resistance compared to WC/W2C reinforced NiCrBSi hardfacing with two times higher wear values. However, in combined impact/abrasive and erosive contacts, manufactured hard particle re

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19

Iakovou, R., L. Bourithis, and G. Papadimitriou. "Synthesis of boride coatings on steel using plasma transferred arc (PTA) process and its wear performance." Wear 252, no. 11-12 (2002): 1007–15. http://dx.doi.org/10.1016/s0043-1648(02)00056-x.

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20

Jhavar, Suyog, N. K. Jain та C. P. Paul. "Development of micro-plasma transferred arc (μ-PTA) wire deposition process for additive layer manufacturing applications". Journal of Materials Processing Technology 214, № 5 (2014): 1102–10. http://dx.doi.org/10.1016/j.jmatprotec.2013.12.016.

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21

AY, Gökçe Mehmet, and Osman Nuri ÇELİK. "Inspection of nickel-based boron carbide PTA coatings on AISI 4140 steel." Industrial Lubrication and Tribology 71, no. 4 (2019): 548–56. http://dx.doi.org/10.1108/ilt-06-2018-0224.

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Purpose Plasma transferred arc (PTA) coating is a novel method for surface-coating applications. In this method, the substrate is melted using a plasma arc, and surfacing agents such as carbides are introduced to the melt pool. The purpose of this study is to investigate the effect of boron carbide (B4C) in nickel-based coating on AISI 4140 steel. Design/methodology/approach Samples were tested on a ball-on-disc wear device, and the microstructure, as well as wear properties, were investigated using SEM and XRD. Findings The effect of B4C addition was shown to be linear, with a p-value of 0.02

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Achar, D. R. G., M. Kamaraj, and C. S. Ganesh Bavisetty. "Effect of Boron Carbide Addition on Wear Behaviour of Cobalt Based Hardfacings by Plasma Transferred Arc Process." Materials Science Forum 638-642 (January 2010): 3745–50. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.3745.

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Cobalt based alloy with the addition of 5 and 10 wt% boron carbide have been deposited by PTA process on stainless substrates effectively. The dry sliding wear performances of the coated alloys have been studied at room as well as at elevated temperatures. Addition of boron carbide to satellite 6 resulted in refinement of grains and formation of complex carbides and borides, which has lead to increase in hardness and wear resistance of the hardfaced layers. Superior wear resistance has been found to be at the composition of Stellite 6 with 5 wt% addition of boron carbide.

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23

Cao, Hua Tang, Xuan Pu Dong, Qi Wen Huang, Zhang Pan, Jian Jun Li, and Zi Tian Fan. "Microstructure and Hardness Distribution of Ductile Iron by PTA Cr-Ni-Mo-Cu Alloying." Advanced Materials Research 852 (January 2014): 188–92. http://dx.doi.org/10.4028/www.scientific.net/amr.852.188.

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The mixture powder of Cr, Ni, Mo and Cu were deposited evenly on a ductile iron with ferrite matrix and treated by plasma transferred arc (PTA). The microstructure and hardness distribution of the PTA-alloyed layers were investigated by using scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and microhardness tester, respectively. Results show that the cross-section consists of four regions: alloyed zone, melted zone, heat affected zone and unaffected substrate. The maximum microhardness of PTA-alloyed sample is measured to be as hig

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Bourithis, E., A. Tazedakis, and G. Papadimitriou. "A study on the surface treatment of “Calmax” tool steel by a plasma transferred arc (PTA) process." Journal of Materials Processing Technology 128, no. 1-3 (2002): 169–77. http://dx.doi.org/10.1016/s0924-0136(02)00447-8.

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25

Ceretti, M., H. Michaud, M. Perrin, and A. Lodini. "RESIDUAL STRESS MEASUREMENT IN A PLASMA SEMI-TRANSFERRED ARC (PTA) COATING BY NEUTRON AND X-RAY DIFFRACTION." Experimental Techniques 19, no. 3 (1995): 17–21. http://dx.doi.org/10.1111/j.1747-1567.1995.tb00853.x.

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Ulutan, Mustafa, Koray Kiliçay, Osman Nuri Çelik, and Ümit Er. "Microstructure and wear behaviour of plasma transferred arc (PTA)-deposited FeCrC composite coatings on AISI 5115 steel." Journal of Materials Processing Technology 236 (October 2016): 26–34. http://dx.doi.org/10.1016/j.jmatprotec.2016.04.032.

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27

Zhao, Zhong Li, Kai Fang Dang, Jun Hai Liu, et al. "Microstructure and Wear Properties of TiC/Fe-Based Composite Coating Prepared by PTA Weld-Surfacing Process." Advanced Materials Research 652-654 (January 2013): 1780–86. http://dx.doi.org/10.4028/www.scientific.net/amr.652-654.1780.

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The TiC/Fe-based composite coating was fabricated by plasma transferred arc (PTA) weld-surfacing process on substrate of Q235 steel with the mixture of ferrotitanium, ferrochromium and ferrosilicium powders. The microstructure and wear properties of the coating were investigated by means of X-ray diffraction (XRD), scanning electron micrograph (SEM), energy dispersive X-ray analysis (EDS), microhardness test and wear test. The results show that the coating consists of TiC, (Cr,Fe)7C3 and austenite. The composite coating is metallurgically bonded to the Q235 steel substrate. TiC particles forme

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Nady, Abdeljalil, Herve Bonnefoy, Vincent Klosek, Marie Helene Mathon, and Alain Lodini. "Numerical Modeling of Residual Stress and Prediction of Heat Affected Zone Induced by PTA Process." Materials Science Forum 652 (May 2010): 44–49. http://dx.doi.org/10.4028/www.scientific.net/msf.652.44.

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The objective of this study is to investigate the effects of Heat Affected Zone produced by Plasma Transferred Arc process and residual stress in substrate steel 55NiCrMoV7. In this study, based on ABAQUS code, a sequentially coupled thermal, metallurgical, mechanical 2-D finite element model is developed. In the numerical simulations, the coating and Heat Affected Zone are used to predict the residual stresses. The simulation results revealed that the final residual stress in substrate steel do seem to be influenced by the HAZ.

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Wilden, J., and Jean-Pierre Bergmann. "Mechanised Plasma-Powder-Arc-Welding (PPAW) of Aluminium Sheets." Advanced Materials Research 6-8 (May 2005): 225–34. http://dx.doi.org/10.4028/www.scientific.net/amr.6-8.225.

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The use of aluminium alloys rose in the last decade, as its specific mechanical properties allow a reduction of mass as for example in automotive. Moreover aluminium, due to its high corrosion resistance, is a very important material class in plant construction, where it is used for pipes or container till 250 °C. Aluminium can be welded with different technologies. Nowadays TIG and MIG are mainly used for example in plant construction or in mechanical engineering. Laser beam welding is a widely established technology in automotive. The advantage is the high energy concentration, which leads t

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Wang, Li Mei, Jun Bo Liu, and Chi Yuan. "Fe-Cr-C-TiC High-Chromium Fe-Based Ceramic Composite Coating Prepared by PTA Weld-Surfacing Process." Materials Science Forum 675-677 (February 2011): 783–87. http://dx.doi.org/10.4028/www.scientific.net/msf.675-677.783.

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In situ synthesized Fe-Cr-C-TiC high-chromium Fe-based ceramic composite coating was fabricated on substrate of Q235 steel by plasma transferred arc (PTA) weld-surfacing process using the mixture of ferrotitanium, ferrochromium, ferroboron and ferrosilicium powders. The microstructure and wear properties of the composite coating were investigated by XRD, SEM, EDS, microhardness tester and wear tester. Results show that the coating consists of TiC, (Cr,Fe)7C3 and austenite. The coating is metallurgically bonded to the Q235 steel substrate. TiC particles formed by PTA weld-surfacing process pres

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Xiong, Yibo, Dongqing Lin, Zhizhen Zheng, Jianjun Li, and Tiantian Deng. "The Effect of Different Arc Currents on the Microstructure and Tribological Behaviors of Cu Particle Composite Coating Synthesized on GCr15 Steel by PTA Surface Alloying." Metals 8, no. 12 (2018): 984. http://dx.doi.org/10.3390/met8120984.

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In order to improve the tribological performance of the slanted guide pillar, Cu particle reinforced composite coatings were synthesized on the surface of GCr15 steel using the plasma transferred arc (PTA) alloying technique. A systematic experimental investigation was conducted to study the effects of PTA current on the microstructure and microhardness of alloyed coatings. In addition, tribological behaviors at room temperature (RT) and high temperature (HT) were investigated. The results indicate that at low PTA current (70A), due to the insufficient current, no Cu particles are dissolved in

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32

Tkachivskyi, Dmytro, Mart Viljus, Rainer Traksmaa, et al. "Comparative Study of Plasma Cladded Fe-Based Composite Hardfacings with In Situ Synthesized Cr and Ti Carbide Reinforcement." Solid State Phenomena 320 (June 30, 2021): 83–89. http://dx.doi.org/10.4028/www.scientific.net/ssp.320.83.

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This study aimed to compare the X3CrNiMo17-13-3 stainless steel based plasma transferred arc (PTA) cladded hardfacings, reinforced with the in-situ synthesized Cr and Ti carbides. Carbon black and either pure Cr, pure Ti, or TiO2 were utilized as reinforcement precursors (the respective hardfacings are further referred to as Cr+C, Ti+C and TiO2+C). The pre-placed mixtures of matrix and reinforcement precursor powders were remelted by the plasma transferred arc, applying the preliminarily optimized process parameters (95 A, 22 – 24 V, 0.2 mm/s). As a reference, the unreinforced stainless steel

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Moztarzadeh, Hadi, Darren J. Hughes, Sampan Seth, et al. "Evolution of Residual Stresses in Linear Deposition Wire-Based Cladding of Ti-6Al-4V." Materials Science Forum 905 (August 2017): 101–6. http://dx.doi.org/10.4028/www.scientific.net/msf.905.101.

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Neutron diffraction and curvature measurements were conducted to investigate the residual stresses associated with Plasma Transferred Arc Cladding (PTA) of Ti-6Al-4V on a substrate of the same material. The wire-feed PTA coupled with 3-axis CNC machine was used as an Additive Manufacturing (AM) technique to build parts. A combination of the process parameters was chosen to investigate their effects on residual stress evolution. Neutron Diffraction (ND) measurements of residual strains were performed on the SALSA instrument at the Institut Laue-Langevin (ILL), Grenoble, France. Longitudinal str

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Golovin, Pavel A., Maximilian Mildebrath, and Evgeniy Zemlyakov. "Effects of PTA Deposition Parameters on Coating Quality of 41Cr4, 50CrV4 and 100Cr6 Steel." Key Engineering Materials 822 (September 2019): 801–8. http://dx.doi.org/10.4028/www.scientific.net/kem.822.801.

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Present paper is about experimental investigation coating quality obtained by plasma transferred arc (PTA) welding in relation to the material-and process parameters. The aim of work is to get different materials coatings with satisfactory properties, which could be used at hybrid bevel gears further. The main idea of this method is to create bi-metal workpieces by deposition one material over other, then form it by thermo-mechanical processing. Using hybrid bevel gears would reduce costs because the gear would not be made of one expensive material, but has only a functional surface layer with

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35

Lin, Hung Mao, Truan Sheng Lui, Li Hui Chen, and Wai Sing Chan. "Microstructure and Bonding Strength in Overlaying of Stellite 6 Alloy on Spheroidal Graphite Cast Iron by Plasma Transferred Arc Process." Key Engineering Materials 345-346 (August 2007): 505–8. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.505.

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In this study, stellite 6 alloy was overlaid on spheroidal graphite (SG) cast irons with various carbon contents (1.5wt%~3.8wt%) and a fixed silicon content (approximately 2.5wt%) using the plasma transferred arc (PTA) process at different overlaying current (140A~220A) while the travel speed of the PTA torch was maintained constant. Results indicated that the solidification structures of the stellite 6 overlayers were dendritic and had a large amount of interdendritic precipitates (M7C3 and M23C6 carbide) after the satellite 6 alloy had been overlaid on SG cast irons with different carbon con

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Santiago-Bautista, L., H. M. Hdz-García, M. Alvarez-Vera, et al. "Effects of tic Nanostructured Overlays on D2 Steels by PTA." MRS Advances 2, no. 64 (2017): 4041–47. http://dx.doi.org/10.1557/adv.2017.603.

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AbstractTwo metal fillers with TiC nanoparticles (TiC NPs) of less than 100 nm for the overlay process is an alternative to hardfacing for treating surfaces subjected to severe wear. In this work, the effect of tribological behavior for TiC NPs addition on two Co-based filler materials, as well as the dilutions, was studied. Mixtures of Co-based filler metals without and with 0.5% and 2% TiC NPs were deposited onto D2 steel plates using PTA (Plasma Transferred Arc). The BET surface area was 0.17 m2 g-1 and 0.31 m2 g-1, respectively, for Stellite 6 and 12. The distribution of ca 23% macroporous

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Lou, Ming, Yu Xiang Xu, Hong Wu Ouyang, and Yong Du. "Comparison of Microstructure and Mechanical Properties of Co-Based and Fe-Based Alloy Coatings Deposited by PTA." Advanced Materials Research 834-836 (October 2013): 617–22. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.617.

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Stellite 6 Co-based and Hӧganӓs Fe-based alloy coatings were deposited on austenitic engine valve using plasma transferred arc (PTA) hardfacing. The microstructures, composition distribution and mechanical properties of coatings were investigated by combining optical microscope (OM), scanning electron microcopy (SEM), field emission electron-probe analyzer (EPMA) and nanoindentation technique. The microstructures of hardfacing coatings consist of three phases which belong to hypoeutectic structure and Co-based coating has more uniformed and regularly changed microstructure. The determination

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38

Cardozo, Eloisa Pereira, Sergio Ríos, Supriyo Ganguly, and Ana Sofia C. M. D’Oliveira. "Assessment of the effect of different forms of Inconel 625 alloy feedstock in Plasma Transferred Arc (PTA) additive manufacturing." International Journal of Advanced Manufacturing Technology 98, no. 5-8 (2018): 1695–705. http://dx.doi.org/10.1007/s00170-018-2340-z.

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Tarbe, Riho, Priit Kulu, Arkadi Žikin, and Andrei Surženkov. "Abrasive Wear Resistance of HVOF Sprayed and PTA-Welded Hardmetal Hard Phase Reinforced Metal-Matrix Based Coatings." Key Engineering Materials 604 (March 2014): 3–7. http://dx.doi.org/10.4028/www.scientific.net/kem.604.3.

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The aim of the current study was to elaborate and compare abrasive wear resistance of thick metal matrix based deposited coatings. To produce metal matrix composite (MMC) coatings, experimental powders made by mixing commercial nickel and iron based powders with recycled hardmetal powder were used. The usage of recycled hardmetal as an initial material can significantly decrease the cost of production, improve the mechanical characteristics of coatings and consequently increase their wear resistance. Based on structural studies the optimal content of 40 vol% hard phase was selected. Plasma tra

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Jeong, Jae Hyun, Kyung Man Moon, Sung Yul Lee, and Myeong Hoon Lee. "Evaluation on the Corrosion and Wear Resistance of Welding Zone Welded with Plasma Transferred Arc Welding Method." Key Engineering Materials 723 (December 2016): 230–36. http://dx.doi.org/10.4028/www.scientific.net/kem.723.230.

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There are many welding methods which have been currently performed to prolong the life time of exhaust valve of marine engine from an economic point of view. In this study, one of these welding methods, plasma transferred arc (PTA) welding was performed at the base metal of Nimonic 80A which would be used as the material of exhaust valve with three kinds of filler metals such as Stellite 6, Inconel 625 and Inconel 718. The mechanical and corrosion characteristics were investigated with electrochemical and wear loss test methods. The Nimonic 80A as the base metal had a better corrosion resistan

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Zong, Lin, and Zheng Jun Liu. "In situ Synthesis of Ceramic Phase Reinforced Fe-Based Alloy Surface Coating by PTA." Advanced Materials Research 189-193 (February 2011): 518–22. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.518.

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The in-situ ceramic phases reinforced Fe-based surface coating had been produced by prepared high-carbon ferrochromium, ferrovanadium and graphite power on 20g steel through plasma transferred arc weld-surfacing process(PTA). The microstructure and properties were investigated by means of optical microscopy(op), scanning electron microscopy(SEM), X-ray diffraction(XRD) and microhardness meter. The results showed that the substrate and the coating formed good metallurgical bonding.The microstructure of coating consists of primary M7C3 carbide and eutectic structures[M+γ′+M7C3+VC]. The primary h

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Perez-Soriano, Eva M., Enrique Ariza, Cristina Arevalo, Isabel Montealegre-Melendez, Michael Kitzmantel, and Erich Neubauer. "Processing by Additive Manufacturing Based on Plasma Transferred Arc of Hastelloy in Air and Argon Atmosphere." Metals 10, no. 2 (2020): 200. http://dx.doi.org/10.3390/met10020200.

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This research was carried out to determinate the effect of the atmosphere processing conditions (air and argon) and two specific thermal treatments, on the properties of specimens made from the nickel-based alloy Hastelloy C-22 by plasma transferred arc (PTA). Firstly, the additive manufacturing parameters were optimized. Following, two walls were manufactured in air and argon respectively. Afterwards, a determinate number of specimens were cut out and evaluated. Regarding the comparison performed with the extracted specimens from both walls, three specimens of each wall were studied as-built

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Liu, Jun Hai, Ji Hua Huang, Jun Bo Liu, and Gui Xiang Song. "Microstructure and Wear Resistance of TiC+Cr7C3 Reinforced Ceramal Composite Coating Produced by PTA Weld-Surfacing Process." Advanced Materials Research 97-101 (March 2010): 1377–80. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.1377.

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A new type in situ reinforcing phase TiC+Cr7C3 ceramal composite coating was fabricated on substrate of Q235 steel by plasma transferred arc (PTA) weld-surfacing process using the mixture of ferrotitanium, ferrochromium, ferroboron and ferrosilicium powders. Microstructure and wear performance of the coating were investigated by means of X-ray diffraction (XRD), scanning electron micrograph (SEM), energy dispersive X-ray analysis (EDS), microhardness tester and wear tester. Results show that the composite coating consists of TiC, primary phase Cr7C3 , (Cr,Fe)7C3 and austenite. The composite co

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Smolenska, Hanna. "The Effect of Fabrication Method of Cobalt Base Clad Layer on Air Oxidation." Solid State Phenomena 165 (June 2010): 169–72. http://dx.doi.org/10.4028/www.scientific.net/ssp.165.169.

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The paper presents oxidation experiment with clad layers made of the cobalt base powder and prepared by the multi overlapped tracks and sublayers fabricated by means of plasma transferred arc (PTA) and laser cladding technologies. The oxidation processes were carried on at 1100 deg. C for 200 hours. In the course of investigation it was demonstrated that there were no evidence of influence of the fabrication method on the corrosion resistance of cobalt clad layers. The phase compositions of the scale were the same – generally Cr2O3 and similar tendency for cracking and spalling. In both cases

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Jegdic, Bore V., Bojana M. Radojković, Biljana M. Bobić, Marija M. Krmar, and Slavica Ristić. "Corrosion resistance of metalized layers on steel parts in ventilation mill." Metallurgical and Materials Engineering 24, no. 2 (2018): 123–32. http://dx.doi.org/10.30544/340.

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Corrosion behavior of metalized layers, obtained by Plasma Transferred Arc (PTA) process and by High-Velocity Oxygen Fuel (HVOF) process with the purpose to improve the wear resistance of vital parts of ventilation mill in a thermal power plant, has been tested. The test is performed using three electrochemical techniques, in a solution containing chloride and sulfate ions. It is shown that the steel surface (base metal) dissolves uniformly, without pitting or other forms of local dissolution. Morphology of metalized layers surface indicates that dissolution is non-uniform, but it still can be

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GUR, ALI KAYA, BUSRA ICEN, SUBRAMANIAM SHANKAR, and THANGAMUTHU MOHANRAJ. "EXAMINATION OF B4C–FeCrC COMPOSITE LAYER DURING DRY SLIDING USING STATISTICAL METHOD." Surface Review and Letters 28, no. 05 (2021): 2150034. http://dx.doi.org/10.1142/s0218625x21500347.

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In this work, the surface of AISI 430 stainless steel was coated with a hyper-eutectic FeCrC and pure B4C powders using the plasma transferred arc (PTA) welding method. Further, the microstructure, microhardness, and abrasive wear resistance of the coated layer were evaluated in this work. Hard coating layers were formed between 750[Formula: see text]HV and 1000[Formula: see text]HV from the PTA melting coating process with high energy input (due to PTA). Due to the addition of FeCrC and B4C, the martensite, austenite, M7(C-B)3, M[Formula: see text](C-B)6, Cr(C-B), FeCr, Fe2B, Fe3C, Fe2C, SiC,

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Cardozo, Eloisa Pereira, Sergio Ríos, Supriyo Ganguly, and Ana Sofia C. M. D’Oliveira. "Correction to: Assessment of the effect of different forms of Inconel 625 alloy feedstock in Plasma Transferred Arc (PTA) additive manufacturing." International Journal of Advanced Manufacturing Technology 98, no. 5-8 (2018): 1707. http://dx.doi.org/10.1007/s00170-018-2394-y.

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Brezinová, Janette, Ján Viňáš, Anna Guzanová, et al. "Selected Properties of Hardfacing Layers Created by PTA Technology." Metals 11, no. 1 (2021): 134. http://dx.doi.org/10.3390/met11010134.

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The paper presents research results on the quality of hardfacing layers made during the renovation of unheated mold surfaces designed for injection of aluminum alloys using the plasma transferred arc (PTA) technology. As mold material, the medium alloy steel X38CrMoV5-1 (H11) was used. For the formation of functional layers, three types of additives in the form of powder were applied: two types on an iron basis with the designation HSS 23 and HSS 30 and one type on a nickel basis with the designation DEW Nibasit 625-P. The hardfacing layers were made on a 120 × 350 × 50 mm plate in two layers

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Brezinová, Janette, Ján Viňáš, Anna Guzanová, et al. "Selected Properties of Hardfacing Layers Created by PTA Technology." Metals 11, no. 1 (2021): 134. http://dx.doi.org/10.3390/met11010134.

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The paper presents research results on the quality of hardfacing layers made during the renovation of unheated mold surfaces designed for injection of aluminum alloys using the plasma transferred arc (PTA) technology. As mold material, the medium alloy steel X38CrMoV5-1 (H11) was used. For the formation of functional layers, three types of additives in the form of powder were applied: two types on an iron basis with the designation HSS 23 and HSS 30 and one type on a nickel basis with the designation DEW Nibasit 625-P. The hardfacing layers were made on a 120 × 350 × 50 mm plate in two layers

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Hou, Yue, Haiyan Chen, Qian Cheng, Li Fan, and Lihua Dong. "Effects of Y2O3 on the microstructure and wear resistance of WC/Ni composite coatings fabricated by plasma transferred arc." Materials Express 10, no. 5 (2020): 634–39. http://dx.doi.org/10.1166/mex.2020.1686.

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The present study envisaged the WC-reinforced nickel composite coatings prepared on the surface of 4145H steel using the plasma transferred arc (PTA) method. The effects of different content of Y2O3 on the microscopic morphology, phase composition, micro-hardness and wear behavior were investigated by scanning electron microscopy (SEM) with an energy-dispersive spectrometer (EDS), X-ray diffraction (XRD), micro-hardness test and wear experiments. The deposited coatings consisted of WC-reinforced Ni59 composite coatings with the addition of 0 wt%, 0.5 wt% and 1 wt% Y2O3. Microstructural observa

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