Microstructure and Properties of Nanocrystalline Ni-Mo Coatings Prepared by Ultrasound-Assisted Pulse Electrodeposition

Liu, Cansen; Huang, Xin; Xu, Ruisi; Mai, Y.J.; Zhang, Liuyan; Jie, Xiaohua

doi:10.1007/s11665-021-05570-1

Cited by 21 publications

(8 citation statements)

References 45 publications

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“…During the electrodeposition process, Mo is constantly deposited on the copper substrate. In this case, MoO 4 2− ions do not have enough time to accumulate around the substrate (cathode) and this results in concentration polarization [42]. In this case, the concentration polarization gives rise to hydrogen evolution, which induces high internal stress in the coating and leads to the formation of surface cracks [43].…”

Section: Intrinsic Electrochemical Activitymentioning

confidence: 99%

Corrosion and catalytic properties of electrodeposited nanocrystalline molybdenum

Hasan

Asselin

2023

Preprint

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Molybdenum (Mo) is a less toxic alternative to chromium for protective coatings. Mo possesses similar properties to Cr, although its electrochemical properties, particularly its passive behavior, have been less studied. We compare the passive behavior of electrodeposited Mo coatings to that of bulk metallic Mo in 3.5% sodium chloride (NaCl) solution. The results demonstrate a strong correlation between the microstructure and passive properties of the coating. Electrodeposited Mo has a higher tendency to passivate, a higher passive current density, and a larger passivation window compared to bulk Mo in 3.5% NaCl. The enhanced electrochemical behavior of the Mo coating is attributed to its nanometric structure and increased electrochemically active surface area. This study highlights the potential for the use of electrodeposited Mo as a safer and more environmentally friendly alternative to Cr coatings.

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Section: Intrinsic Electrochemical Activitymentioning

confidence: 99%

Corrosion and catalytic properties of electrodeposited nanocrystalline molybdenum

Hasan

Asselin

2023

Preprint

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“…They stated that these improvements in properties are due to grain refinement and dispersion strengthening of the Fe-Ni-TiO 2 sample. Similarly, Liu et al [133] studied the surface properties of NC Ni-Mo coatings synthesized by ultrasound-assisted pulse electrodeposition method. Their results revealed improvement in microhardness of Ni-Mo coatings with the reduction in crystallite size and increasing Mo content.…”

Section: Mechanical Properties Of Nc Materialsmentioning

confidence: 99%

Nanocrystalline Materials: Synthesis, Characterization, Properties, and Applications

et al. 2021

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Nanostructuring is a commonly employed method of obtaining superior mechanical properties in metals and alloys. Compared to conventional polycrystalline counterparts, nanostructuring can provide remarkable improvements in yield strength, toughness, fatigue life, corrosion resistance, and hardness, which is attributed to the nano grain size. In this review paper, the current state-of-the-art of synthesis methods of nanocrystalline (NC) materials such as rapid solidification, chemical precipitation, chemical vapor deposition, and mechanical alloying, including high-energy ball milling (HEBM) and cryomilling was elucidated. More specifically, the effect of various process parameters on mechanical properties and microstructural features were explained for a broad range of engineering materials. This study also explains the mechanism of grain strengthening using the Hall-Petch relation and illustrates the effects of post-processing on the grain size and subsequently their properties. This review also reports the applications, challenges, and future scope for the NC materials.

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“…However, it is very susceptible to corrosion and wear after exposure to humid environment at any pH including marine medium producing harmful corrosion products that can have adverse effect on the biological systems. The low mechanical strength of the brass can also negatively influence the performance, shorten the lifespan of equipment resulting in expensive downtime, extra maintenance, power and economical losses [1][2][3][4]. Therefore, an attempt has been made to develop various barrier coatings to enhance the mechanical, wear and corrosion performance of brass.…”

Section: Introductionmentioning

confidence: 99%

“…12, x FOR PEER REVIEW 11 of 20 begins from the corrosion potential (Ecorr). A rapid rise in anodic current density at the potential below the potential of oxygen evolution can be due to:(1) Local dissolution of passive films and formation of metastable pits in the presence of aggressive Cl − ions;(2) …”

mentioning

confidence: 99%

Effect of hBN on Corrosion and Wear Performances of DC Electrodeposited NiW and NiW–SiC on Brass Substrates

Dadvand

Savadogo

2022

Coatings

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Crack-free and uniform nickel–tungsten (NiW) coatings and their composite coatings filled with ceramic particles such as silicon carbide (SiC) and hexagonal-boron nitride (hBN) were deposited on brass substrates by applying direct current (DC) waveforms. Among all coatings, NiW–SiC–hBN coatings displayed the noblest corrosion potential (−0.49 V) and lowest current density (4.36 × 10−6 A·cm−2). It also seems that addition of hBN and SiC ceramic particles to NiW matrix remarkably improved the wear performance of the NiW coatings. However, NiW–hBN exhibited the lowest wear volume (48.84 × 103 µm3) and the friction coefficient of 0.1 due to ultra–low friction coefficient of hBN particles.

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Microstructure and Properties of Nanocrystalline Ni-Mo Coatings Prepared by Ultrasound-Assisted Pulse Electrodeposition

Cited by 21 publications

References 45 publications

Corrosion and catalytic properties of electrodeposited nanocrystalline molybdenum

Corrosion and catalytic properties of electrodeposited nanocrystalline molybdenum

Nanocrystalline Materials: Synthesis, Characterization, Properties, and Applications

Effect of hBN on Corrosion and Wear Performances of DC Electrodeposited NiW and NiW–SiC on Brass Substrates

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