Study on the role of element Mo in improving thermal stability and corrosion resistance of amorphous Ni-P deposit

Zhao, Guolong; Wang, Ruihan; Liu, Shushuai; Wu, Dongting; Zhang, Yongang; Wang, Tao; Zou, Yong

doi:10.1016/j.jnoncrysol.2020.120358

Cited by 11 publications

(6 citation statements)

References 40 publications

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“…7,9 The general modified characteristics of the coating can be improved by various particle enhancements. 10,11 Zhao et al 12 showed that stable corrosion-resistant passive film can be formed on electroless plated Ni-P coating by incorporating Mo that have with increased hardness, good thermal conductivity, and superior anti-corrosion resistance. 12 Laszczyńska et al 13 developed passive films using electrodeposited Ni-Mo alloy coatings enriched with Mo.…”

Section: Introductionmentioning

confidence: 99%

“…10,11 Zhao et al 12 showed that stable corrosion-resistant passive film can be formed on electroless plated Ni-P coating by incorporating Mo that have with increased hardness, good thermal conductivity, and superior anti-corrosion resistance. 12 Laszczyńska et al 13 developed passive films using electrodeposited Ni-Mo alloy coatings enriched with Mo. Mosayebi et al 14 obtained high polarization resistance of Ni-Mo electroless plated coatings in chloride media.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments

Chen

Wang

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Q235 steel is a low-cost material widely applied in modern industrial constructions. However, electrochemical degradation is the main drawback for its applications in chloride-enriched environments. To address this problem, NiCrAlMo and NiCrAlMo + 2 wt% nano-CeO2 composite coatings were laser-cladded on Q235 steel substrates. Characterization methods were used to investigate the microstructures, corrosion behaviors, and electrochemical mechanisms of the obtained coatings. The results showed that adding nano-CeO2 is conductive for removing residual gas pores and for refinement of grains, effectively improving the passive and electrochemical properties of the NiCrAlMo coating in both chloride-enriched solutions. Furthermore, the NiCrAlMoCeO2 composite coating exhibits a significantly reduced icorr of 0.4919 µA cm2 and an increased resistance ( Rp) of 175,310 Ω cm2 in a neutral solution, demonstrating the good anti-corrosion properties for its application in marine engineering structures.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments

Chen

Wang

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…The incorporation of elements such as W, Sn, Co, Mo, Fe, or Cu to create quaternary or ternary alloys further enhances their tribological behavior, corrosion resistance, and thermal stability [8][9][10][11]. For instance, Ni-Mo-P plating is often stronger and more corrosion-resistant than Ni-P plating [12]. Electroless composite deposits of Ni-P offer better wear resistance compared to binary Ni-P deposits [13].…”

Section: Introductionmentioning

confidence: 99%

Tribological behavior of autocatalytic Ni-P based duplex coatings

Biswas,

Das,

Sahoo

2024

Phys. Scr.

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The present research evaluates the tribological performance of different Ni-P based duplex autocatalytic coatings (electroless coatings). The study investigates coatings including Ni-P/Ni-W-P, Ni-P/Ni-Mo-P, and Ni-P/Ni-Cu-P, examining various factors such as heat treatment conditions, sample composition, and their influence on the coatings' performance. The phase structure of the coatings is influenced by heat treatment parameters viz. temperature and duration as well as phosphorus content. Notably, at temperatures above 400°C, all duplex coatings form a robust nickel phosphide phase, enhancing hardness and wear resistance which is almost double of that in as-deposited state in some cases. When subjected to a temperature of 400°C for duration of 1 hour, the Ni-P/Ni-W-P coating displays the highest microhardness (1440 HV 0.1) and the lowest wear rate (10.62×10-5. mm3. N-1. m-1) among all the duplex coatings. In all three duplex systems, the wear typically involves a combination of abrasive and adhesive mechanisms. Among the as-deposited coatings, the Ni-P/Ni-Cu-P demonstrates higher corrosion potential (Ecorr -302 mV) and lower corrosion current (icorr 1.83×10-5 mA/cm2) which imply superior corrosion resistance compared to the other duplex coatings. In the heat-treated state, the Ni-P/Ni-Mo-P duplex coating generally exhibits better corrosion resistance when compared to the other two types of duplex coatings. 

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“…Furthermore, there are some contradictory findings regarding the corrosion protection of Ni-Mo-P deposits. 28,29 Based on the literature survey, it is found that various nanomaterials are reinforced into Ni-P electroless coating matrix to improve the mechanical, and tribological behavior of the parent surfaces. It is also observed that researchers have deposited coating layers of different materials on flat substrate and proposed their industrial application.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, there are some contradictory findings regarding the corrosion protection of Ni-Mo-P deposits. 28,29…”

Section: Introductionmentioning

confidence: 99%

Ni-Mo-P coatings on thrust plate of a gear pump to enhance its mechanical, tribological, and corrosion resistance properties

Sharma

Kumar

Das

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part B:

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Thrust plate in an external gear pump is one of the most important element which aligns the rotating gears and prevents the leakage through lateral clearances between rotating and non-rotating surfaces. It acts as a sacrificing element and fails frequently under fluctuating load pressure condition. The present research aims at enhancing the relative mechanical and tribological properties of the sacrificial thrust plate through electroless Ni-Mo-P coatings. Molybdenum (Mo) concentration in the electroless bath were tested for their effects on surface morphology, hardness, phase formation, wear rate, and wettability. A hard and self-lubricating layer (Al, Ni, Si, and Mo phases) on the coated surface was indicated by the compositional analysis performed using EDS and XRD. Results show that the microhardness of the coated surfaces has increased significantly by 149.5% (maximum hardness ~ 183.45 HV0.2) for 32 g L−1 Mo concentration. With 32 g L−1 Mo, the maximum coating thickness and water contact angle were 58 µm and 111°, respectively. The base material’s coefficient of friction was 0.5, whereas it was 0.25, 0.10, 0.06, and 0.03 for the samples made with 8, 16, 24, and 32 g L−1 Mo concentration, respectively. Compared to the uncoated sample, the maximum decrement in corrosion rate was found to be about six to seven times in the coated sample (with 32 g L−1 Mo). As a result, the developed coating surfaces provide hardness, lubricity, hydrophobicity, corrosion, and wear resistance simultaneously. The methodology of surface treatment can be used to modify the surface of critical hydraulic components having significant wear like in case of hydraulic cylinders.

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Study on the role of element Mo in improving thermal stability and corrosion resistance of amorphous Ni-P deposit

Cited by 11 publications

References 40 publications

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments

Tribological behavior of autocatalytic Ni-P based duplex coatings

Ni-Mo-P coatings on thrust plate of a gear pump to enhance its mechanical, tribological, and corrosion resistance properties

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Study on the role of element Mo in improving thermal stability and corrosion resistance of amorphous Ni-P deposit

Cited by 11 publications

References 40 publications

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO2 composite coatings in chloride-enriched environments

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO2 composite coatings in chloride-enriched environments

Tribological behavior of autocatalytic Ni-P based duplex coatings

Ni-Mo-P coatings on thrust plate of a gear pump to enhance its mechanical, tribological, and corrosion resistance properties

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Product

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Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments