Electrodeposition and characterisation of nanocrystalline Ni–Mo coatings

Bełtowska-Lehman, E.; Bigos, A.; Indyka, Paulina; Kot, M.

doi:10.1016/j.surfcoat.2011.10.011

Cited by 105 publications

(55 citation statements)

References 21 publications

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“…However, the grain size determined from TEM observations was slightly greater than that obtained from the XRD calculations based on Scherrer's equation. This result is consistent with literature reports [20,29]. Although some scholars have studied the single element of Ni metal to confirm the inverse HallPetch mechanism [30,31], the hardness of the Ni-Mo coatings increases with decreasing grain size (as low as 3.2 nm) in this study.…”

Section: Microstructural Characterizationsupporting

confidence: 93%

“…At sufficiently short pulse periods (less than 10 s), the Mo content of the pulse-plated alloys was higher than in DC plating [18]. Han [20]. Their results indicated that the Ni-Mo coatings with the best micromechanical and tribological properties were obtained at higher current densities (above 3.5 A/dm 2 ) and that the friction coefficient of the best Ni-Mo coating (deposited at 4 A/dm 2 ) was two times lower compared with the Cr layer.…”

Section: Introductionmentioning

confidence: 93%

“…5a), the peaks become increasingly broadened, and their intensities decrease. Numerous studies have emphasized that an increase of the Mo content in the coatings would cause the coating's structure to gradually transform from a crystalline structure to a nanocrystalline/amorphous phase [7,20,27,28]. Although the effect of the pulse frequency on Mo content is small, it still follows such a trend.…”

Section: Microstructural Characterizationmentioning

confidence: 99%

See 2 more Smart Citations

Wear properties of Ni–Mo coatings produced by pulse electroforming

Huang

Hou

Sheu

et al. 2014

Surface and Coatings Technology

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Section: Microstructural Characterizationsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 93%

Section: Microstructural Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

Wear properties of Ni–Mo coatings produced by pulse electroforming

Huang

Hou

Sheu

et al. 2014

Surface and Coatings Technology

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“…The Ni-Mo substrates for superconducting coatings are produced by severe cryorolling and subsequent annealing resulting in an extremely sharp cube texture which is required for epitaxial coatings. These Ni-Mo alloys also exhibit high hardness, wear, thermal and corrosion resistance, and therefore they are readily useful as hard coating materials [29].…”

Section: Introductionmentioning

confidence: 99%

Effect of Mo addition on the microstructure and hardness of ultrafine-grained Ni alloys processed by a combination of cryorolling and high-pressure torsion

Kapoor

Huang

Sarma

et al. 2017

Materials Science and Engineering: A

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An investigation was conducted to examine the effect of molybdenum (Mo) content on the grain size, lattice defect structure and hardness of nickel (Ni) processed by severe plastic deformation (SPD). The SPD processing was applied to Ni samples with low (~0.3 at.%) and high (~5 at.%) Mo concentrations by a consecutive application of cryorolling and highpressure torsion (HPT). The grain size and the dislocation density were determined by scanning electron microscopy and X-ray line profile analysis, respectively. In addition, the hardness values in the centers, half-radius and peripheries of the HPT-processed disks was determined after ½, 5 and 20 turns. The results show the higher Mo content yields a dislocation density about two times larger and a grain size about 30% smaller. The smallest value of the grain size was ~125 nm and the highest measured dislocation density was ~60 × 10 14 m -2 for Ni-5% Mo. For the higher Mo concentration, the dislocation arrangement parameter was larger indicating a less clustered dislocation structure due to the hindering effect of Mo on the rearrangement of dislocations into low energy configurations. The resultsshow there is a good correlation between the dislocation density and the yield strength using the Taylor equation. The  parameter in this equation is slightly lower for the higher Mo concentration in accordance with the less clustered dislocation structure.

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“…Electrodeposition-prepared transition metal oxide films exhibit good electrochromic properties. For electrodeposited Mo-Ni oxide films, it has been shown that as Mo content increases, certain peaks in XRD broaden and disappear due to a decrease in grain size [8,9]. Even though there are reports for the optical properties, structural characteristics, band assignments and electrical properties by dip spin coating Indium Tin Oxide (ITO) plates, values are reported only for Indium Tin Oxide (ITO) substrates in this paper.…”

Section: Introductionmentioning

confidence: 89%

Characterization studies on the novel mixed thin films

Ramasundari¹,

Ganeshan²,

Vijayalakshmi³

2016

Nanosystems: Phys. Chem. Math.

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Among electrochemical processes having a considerable impact on technical development, the mixed thin film (Mo-Ni oxide) plays an important role, due to its better mechanical, anticorrosive and thermal stability characteristics. The mixed films have been prepared by dip spin coating. The films are grown on substrates like Indium Tin Oxide (ITO) and are well adherent on the substrates, pinhole free and transparent. The X-ray diffraction analysis of the films confirms they are polycrystalline in nature. The morphological study reveals that the uniform distributions have flower-like structure. From the compositional analysis, the EDAX spectra show the presence of molybdenum and nickel. The optical band gap was found to be 1.36 eV and band assignments for Fourier Transform Infrared (FTIR) spectra are comparable to reported values.

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Electrodeposition and characterisation of nanocrystalline Ni–Mo coatings

Cited by 105 publications

References 21 publications

Wear properties of Ni–Mo coatings produced by pulse electroforming

Wear properties of Ni–Mo coatings produced by pulse electroforming

Effect of Mo addition on the microstructure and hardness of ultrafine-grained Ni alloys processed by a combination of cryorolling and high-pressure torsion

Characterization studies on the novel mixed thin films

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