Morphological and microstructural properties of two-phase Ni–Cu films electrodeposited at different electrolyte temperatures

Saraç, Umut; Baykul, M. Celalettin

doi:10.1016/j.jallcom.2012.10.071

Cited by 46 publications

(30 citation statements)

References 46 publications

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“…Further increasing of the bath temperature leads to a decrease of the (220) texture and increase of the (111) texture. Accordingly, a rise in electrolyte temperature seems to weaken the degree of the (111) texture and enhance the (220) texture, which is consistent with former investigations [11].…”

Section: Effects Of Temperature and Ph Value On Morphology And Microssupporting

confidence: 92%

“…However, when the temperature exceeded 60 • C, water vapor evaporation was accelerated, and the electrolyte became unstable and unfavorable for deposition. Normally, the temperature of electrodeposition is chosen in the range of 25-55 • C [11]. According to these results, the range of temperature in the present study was set in the range of 40 to 60 • C.…”

Section: Voltametric Behaviormentioning

confidence: 99%

“…Among various coating technologies, electrodeposition (ED) is a low-cost technique suitable for preparing various coatings uniformly with a high rate and efficiency. However, a wide range of deposition parameters need to be selected and optimized to obtain enhanced nanocrystalline characteristics [10][11][12][13]. The fundamental relationship between the microstructure and mechanical properties tailored by fabrication conditions is not fully understood.…”

Section: Introductionmentioning

confidence: 99%

“…As indicated in [12], for Ni-Cu deposits, there is a correlation between the variations of texture and grain size such that a smaller (200) texture coefficient benefits a smaller grain size. Sarac and Baykul [11] concluded that there is a direct correlation between the average crystallite size and the degree of the (111) texture. Savall's work [21] on nickel coatings also demonstrated that the decrease in grain size is dependent on texture formation in relation with nucleation and growth processes.…”

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confidence: 99%

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Direct Correlations among the Grain Size, Texture, and Indentation Behavior of Nanocrystalline Nickel Coatings

Liu

Ren

Zhang

et al. 2019

Metals

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By using nc-Ni coatings as a model system, systematic experiments were designed to evaluate the interaction between the microstructural and mechanical properties tailored by electrodeposition conditions. A direct correlation between grain size and texture was established for the first time. The grain size of the (111) crystalline plane decreases with the texture coefficient (RTC) regardless of the process conditions, and that of the (220) plane has different trends. Then, a peculiar phenomenon is revealed that the dependence of hardness on grain size is accurately described by the Hall-Petch relationship when changing the temperature or pH, but with different slopes, while it deviates from such a relationship with changing current density, denoting more underlying mechanisms related to texture. Finally, a surprising degree of influence of texture on hardness and elastic modulus is also presented, with the overall trend of hardness increasing with texture; and when the RTC of (111) exceeds 40%, the elastic modulus increases with texture, implying a fundamental relationship between modulus and texture. Texture predominates over the other factors on the elastic modulus, revealing the importance of elastic anisotropy. Significantly, the present work suggests a useful tailoring routine to fabricate high quality nc-Ni coatings with the desired structure and mechanical properties.

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Section: Effects Of Temperature and Ph Value On Morphology And Microssupporting

confidence: 92%

Section: Voltametric Behaviormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Direct Correlations among the Grain Size, Texture, and Indentation Behavior of Nanocrystalline Nickel Coatings

Liu

Ren

Zhang

et al. 2019

Metals

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“…The particles are applied to turbine engine blade roots or disks' slots as well as expansion joints or compressor air seals. [21][22][23][24][25] Several methods have been studied to prepare nanostructured CuNi and CuNiIn alloy particles including polyol synthesis, [6] wetness impregnation, [8] micro-emulsion method, [9] mechanical milling, [17] arc plasma evaporation, [26] electro deposition, [27][28][29][30] atomization, [31] reduction of metal oxides by mechanical and chemical routes, [32] mild hydrothermal synthesis, [33] hydrothermal reduction, [34] solution combustion synthesis, [7,35,36] and cold spray. [37] Among them, spray pyrolysis is a versatile technique to produce nanostructured metallic and alloy particles in one step.…”

Section: Introductionmentioning

confidence: 99%

Single-Step Production of Nanostructured Copper-Nickel (CuNi) and Copper-Nickel-Indium (CuNiIn) Alloy Particles

Apaydin

Ebin

Gürmen

2016

Metall Mater Trans A

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RAMAZAN OG UZHAN APAYDIN, BURÇ AK EBIN, and SEBAHATTIN GÜ RMENNanostructured copper-nickel (CuNi) and copper-nickel-indium (CuNiIn) alloy particles were produced from aqueous solutions of copper, nickel nitrates and indium sulfate by hydrogen reduction-assisted ultrasonic spray pyrolysis. The effects of reduction temperatures, at 973 K, 1073 K, and 1173 K (700°C, 800°C, and 900°C), on the morphology and crystalline structure of the alloy particles were investigated under the conditions of 0.1 M total precursor concentration and 0.5 L/min H 2 volumetric flow rate. X-ray diffraction studies were performed to investigate the crystalline structure. Particle size and morphology were investigated by scanning electron microscope and energy-dispersive spectroscopy was applied to determine the chemical composition of the particles. Spherical nanocrystalline binary CuNi alloy particles were prepared in the particle size range from 74 to 455 nm, while ternary CuNiIn alloy particles were obtained in the particle size range from 80 to 570 nm at different precursor solution concentrations and reduction temperatures. Theoretical and experimental chemical compositions of all the particles are nearly the same. Results reveal that the precursor solution and reduction temperature strongly influence the particle size of the produced alloy particles.

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Tuning structural properties, morphology and magnetic characteristics of nanostructured Ni‐Co‐Fe/ITO ternary alloys by galvanostatic pretreatment process

Saraç

Trong

Baykul

et al. 2022

Microscopy Res & Technique

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In this research, the structural properties, surface morphology, and magnetic characteristics of nanostructured ternary ferromagnetic alloys grown by a cost‐effective and effortless two‐step electrochemical deposition method on indium tin oxide (ITO) substrates with and without a galvanostatic pretreatment process (GPP) were examined. The GPP was applied at various pretreatment current densities (PCDs) such as −10, −20, and − 30 mA/cm2. The effect of the PCD on the Ni, Co, and Fe contents is found to be insignificant and all resultant Ni‐Co‐Fe thin films show an abnormal co‐deposition. The films have nano‐sized crystallites ranging from 17.3 to 19.6 nm and showed a face‐centered cubic structure with the [111] preferential growth. Compared to the non‐GPP applied Ni‐Co‐Fe film, growing the ternary Ni‐Co‐Fe film on ITO at the PCD of −30 mA/cm2 causes an improvement in the crystal quality and a reduction in the particle size from 150 ± 50 to 70 ± 20 nm. A decrement in the surface roughness and coercivity was also achieved by applying the GPP at the PCD of −30 mA/cm2, but the opposite is true for the GPP performed at the PCD of −10 mA/cm2. The GPP has an effect on the magnetic Squareness Ratio (SQR), but the influence of the PCD on the SQR parameter is negligible. The obtained findings reveal that the properties of the Ni‐Co‐Fe/ITO ternary alloys can be tuned through the GPP applied in various PCDs. Highlights • The effect of the PCD on the Ni, Co, and Fe contents is found to be insignificant. • The films have nano‐sized crystallites and showed a face‐centered cubic structure with the [111] preferential growth. • The analysis reveals that the GPP changes the crystal quality, Hc parameter, surface roughness, and particle size of the films. • The GPP has an effect on the magnetic squareness ratio (SQR), but the influence of the PCD on the SQR parameter is negligible. • The films had nano‐sized crystallites ranging from 17.3 to 19.6 nm. • The films were ferromagnetic, and the Hc and SQR parameters of the films ranged from 30.2 to 42.7 Oe and from 8.8% to 19.6%.

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Morphological and microstructural properties of two-phase Ni–Cu films electrodeposited at different electrolyte temperatures

Cited by 46 publications

References 46 publications

Direct Correlations among the Grain Size, Texture, and Indentation Behavior of Nanocrystalline Nickel Coatings

Direct Correlations among the Grain Size, Texture, and Indentation Behavior of Nanocrystalline Nickel Coatings

Single-Step Production of Nanostructured Copper-Nickel (CuNi) and Copper-Nickel-Indium (CuNiIn) Alloy Particles

Tuning structural properties, morphology and magnetic characteristics of nanostructured Ni‐Co‐Fe/ITO ternary alloys by galvanostatic pretreatment process

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