Technics and performance analysis of Monel alloy coating prepared by high velocity arc spraying

Zhan, J.; Zhong, Li; J, Lu; Wu, Yucheng; Zhao, Lun; Yu, Nian

doi:10.1179/1432891713z.000000000198

Cited by 6 publications

(4 citation statements)

References 1 publication

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“…Coatings obtained have high adhesion strength of approximately 28-41 MPa and porosity levels of around 3-10%, but this has been improved over time by the formation of amorphous/nanocrystalline coatings and addition of reinforcement particles as shown in Tables 1 and 2 [39]. In comparison with arc-spraying, high-velocity arc-spraying (HVAS) provides the molten particles with a higher atomizing air pressure and velocity, which improves the quality of the coatings [41,42].…”

Section: Working Principle Of the Arc-spraying Processmentioning

confidence: 99%

A Review on the Wear, Corrosion and High-Temperature Resistant Properties of Wire Arc-Sprayed Fe-Based Coatings

et al. 2021

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Among different thermal spraying methods, arc-spraying has been widely used due to its low operating costs and high deposition efficiency. The rapid progress of cored wire technology in arc-spraying has increased possibilities for the preparation of new Fe-based coating materials with enhanced properties by adding reinforcement particles and alloying elements to suit the different applications. Fe-based coatings have been extensively used because of their high strength, toughness, lower production costs, and availability of raw materials. This makes them suitable replacements for Ni-based coatings in ambient and high-temperature applications. This review discusses the research status and developments of the arc-sprayed Fe-based coatings. The study specifically reviews the wear behavior, corrosion analysis, and high-temperature resistant properties of arc-sprayed Fe-based coatings, aiming to develop an understanding of the protection mechanisms for Fe-based coatings. The performance of the Fe-based coatings depends on the integrity of the coating structure. Optimizing arc-spraying parameters minimizes defects (pores, grain boundaries, unmelted particles, oxides, and microcracks) that deteriorate the coating properties. High amorphous phase content, ceramic reinforcement particles and alloying elements enhance the corrosion, tribological, and high-temperature resistant properties of Fe-based coatings. In high-temperature applications, Fe-based coatings form oxide scales that protect the coating from further oxidation; thus, it is important to select the optimum composition for the alloying elements.

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Section: Working Principle Of the Arc-spraying Processmentioning

confidence: 99%

A Review on the Wear, Corrosion and High-Temperature Resistant Properties of Wire Arc-Sprayed Fe-Based Coatings

et al. 2021

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“…For utilization of the alloy in the above applications, it is necessary to conform to its long-term stability against corrosion. It has a corrosion rate of about 59.38 mm/y [4] in carbonate melts, and when aluminized it has a value of 1.43 × 10 −3 mm/year [5,6]. In hydrochloric acid medium, the corrosion of Monel decreased to 0.172 mm/y from 2.11 mm/y upon covering it with a monolayer of pyrrolidine dithiocarboxylate [7].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Protection of Monel Alloy Coated with Graphene Quantum Dots Starts with a Surge

Bopp

Santhanam

2019

ChemEngineering

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There has been an active interest in protecting metals and alloys using graphene coating. The mechanism by which corrosion protection occurs has not been well understood as the couple involved are both good electron conductors. In this work, we demonstrate that Monel alloy coated with graphene quantum dots (GQD) changes the corrosion rate with a surge (increase) caused by the galvanic coupling of the two materials. This surge results in the protective layer formation on Monel to inhibit the corrosion. X-ray fluorescence spectrum of Monel (400) alloy showed the composition of it as Ni (67.05%) and Cu (29.42%). The Tafel experiments carried out in NaCl and Na2SO4 electrolytes showed an initial enhancement of the corrosion rate followed by a decrease upon successive polarizations. Monel coated with graphene oxide (an insulator) shows no initial enhancement of corrosion rate; the coated samples showed a lower corrosion rate in comparison to the uncoated samples. X-ray fluorescence, Fourier Transform spectroscopy (FTIR) and Raman imaging studies have been carried out for understanding this transformation. Distinct peaks due to Ni-O stretching and Ni-O-H bending vibration were observed in the FTIR spectrum.

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“…It has been widely used in the fields of mechanical manufacturing, energy, transportation, national defense and so on. [1][2][3][4] High-speed arc spraying technology uses two continuous feeding of cathode and anode to form arc as the heat source to melt the metal wire. The highpressure air flow will melt the droplets of molten metal into particles; the droplets will be accelerated and deposited onto the surface of the workpiece at high speed.…”

Section: Introductionmentioning

confidence: 99%

“…It has been widely used in the fields of mechanical manufacturing, energy, transportation, national defense and so on. 1–4…”

Section: Introductionmentioning

confidence: 99%

Research on wear resistance of plasma remelted FeNiCrAl sprayed coating

Sheng

Zhou

Xuan

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part L:

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To improve the microstructure density of high-velocity arc spraying coating and enhance its adhesive strength and wear resistance, a plasma remelting investigation of the FeNiCrAl sprayed coating was carried out in this study. The microstructure and phase composition of the sprayed coating and the remelted coating were compared by using metalloscope, scanning electron microscope and X-ray diffractometer. The microhardness distribution and friction wear characteristics of the plasma remelted FeNiCrAl sprayed coating were investigated by microhardness tester and CETR sliding friction wear testing machine. The results showed that the remelted coating has more compact microstructure and presents metallurgical bonding with the substrate. The generation of hard phases such as (Fe,Cr) 7 C 3 and Cr 23 C 6 as well as solid solution (Fe,Cr) increases the microhardness of the remelted coating significantly, about 1.4 times higher than that of the sprayed coating. According to sliding friction wear test, the abrasion losses of the sprayed coating under 10 N and 20 N loads are 4.6 and 10.5 times higher than those of the remelted coating, indicating the better wear resistance of the remelted coating.

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Technics and performance analysis of Monel alloy coating prepared by high velocity arc spraying

Cited by 6 publications

References 1 publication

A Review on the Wear, Corrosion and High-Temperature Resistant Properties of Wire Arc-Sprayed Fe-Based Coatings

A Review on the Wear, Corrosion and High-Temperature Resistant Properties of Wire Arc-Sprayed Fe-Based Coatings

Corrosion Protection of Monel Alloy Coated with Graphene Quantum Dots Starts with a Surge

Research on wear resistance of plasma remelted FeNiCrAl sprayed coating

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