The influence of pH and bath composition on the properties of Ni–Co coatings synthesized by electrodeposition

Tian, Liangliang; Xu, Jincheng; Xiao, Songtao

doi:10.1016/j.vacuum.2011.03.027

Cited by 79 publications

(47 citation statements)

References 26 publications

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“…Co-Ni alloys have superior permanent magnetic properties than the pure metals [7]. Additionally, changing composition of the magnetic alloys offers a way of modification of their magnetic properties, such as controllable coercivity and improved saturation magnetization [7].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Structural and Magnetic Properties of the Cobalt-Nickel Alloys Fabricated in Various Electrolyte Solutions

2017

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Cobalt-Nickel alloys have been widely used for decoration, in magnetic recording devices and corrosion resistance applications, etc. In this study, the influences of cobalt amount in electrolyte on the magnetic and structural properties of the electrodeposited Co-Ni alloys were investigated. An electrolyte solution, consisting of cobalt sulfate, nickel sulfate, nickel chloride and boric acid, was used in electrodeposition. The electrochemical investigation of Co-Ni alloys was completed using cyclic voltammetry and galvanostatic studies. The morphological and structural analyses of the alloys were performed using inductively coupled plasma, scanning electron microscopy, X-ray diffraction and vibrating sample magnetometer techniques. The effect of cobalt concentration on the magnetic properties, phase structure and grain size of the alloys was investigated. Magnetic hysteresis results indicate that the amount of the cobalt content in the electrolyte has a strong influence on the ferromagnetic behavior of fabricated alloys. Results of the study show that changing the electrodeposition parameters, such as composition of electrolyte solution, allows to fabricate alloys with different properties.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Structural and Magnetic Properties of the Cobalt-Nickel Alloys Fabricated in Various Electrolyte Solutions

2017

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“…Co-Ni alloy coatings are known as very good magnetic materials. These alloys exhibit a better permanent magnetic property compared to pure metals [4]. Additionally, magnetic composites based upon such alloys offer a possibility of modification of their magnetic properties (improved controllable coercivity and saturation magnetization) and thus can have many applications [4].…”

Section: Introductionmentioning

confidence: 99%

“…These alloys exhibit a better permanent magnetic property compared to pure metals [4]. Additionally, magnetic composites based upon such alloys offer a possibility of modification of their magnetic properties (improved controllable coercivity and saturation magnetization) and thus can have many applications [4]. Co-Ni alloys are commonly used as typical magnetic materials, with applications in several fields [5].…”

Section: Introductionmentioning

confidence: 99%

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Effect of the Applied Current Density on the Structural and Magnetic Properties of the Electrodeposited Cobalt-Nickel Alloy Thin Films

Özdemir

2017

Acta Phys. Pol. A

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In this study, cobalt-nickel (Co-Ni) alloys were deposited electrochemically onto aluminum substrates under applied current densities of 103.8, 138.4, 173 and 207.6 A m −2 . Influence of the applied current density on the structural and magnetic properties of the Co-Ni alloys was investigated. The bath for Co-Ni alloys deposition was composed of 0.08 mol l −1 CoSO4·7H2O, 0.2 mol l −1 NiCl2·6H2O, 0.1 mol l −1 NiSO4·6H2O and 0.25 mol l −1 H3BO3. The electrochemical investigation of Co-Ni alloys was completed using cyclic voltammetry and galvanostatic studies. Inductively coupled plasma analysis has shown that the amount of the cobalt in the deposited alloy has decreased from 73.61% to 67.01% with the increase of the applied current density from 103.8 to 207.6 A m −2 . According to the magnetic analysis results, the values of coercivity coefficient of the deposited Co-Ni alloys range between 115 and 150 Oe, confirming ferromagnetic behavior of the alloys. Experiment results indicate that magnetic and structural properties of the Co-Ni alloy deposits are greatly influenced by the applied current density in the electrodeposition system.

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“…It is well known that the magnetic thin films based on iron group metals such as Fe, Co, and Ni possess much better permanent magnetic properties than pure metals [1,2], and the addition of cobalt in electrodeposited nickel is known to develop their properties [3,4]. Electrodeposited Ni-Co thin films with different compositions have potential applications in microelectrical mechanical system (MEMS) and several other industries due to their unique properties such as magnetic, high heat conductivity, good wear resistance, high hardness, and electrocatalytic activity [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Differences Observed in the Phase Structure, Grain Size–Shape, and Coercivity Field of Electrochemically Deposited Ni–Co Thin Films with Different Co Contents

Saraç

Baykul

Uguz

2015

J Supercond Nov Magn

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Nanostructured Ni-Co thin films were produced using galvanostatic electrodeposition on indium tin oxide (ITO)-coated glass substrates from an aqueous electrolyte solution without stirring at ambient temperature. Different compositions of the films were achieved depending on the Co ion concentration within the electrolyte. From the compositional analysis performed using energy dispersive X-ray (EDX) spectroscopy, the anomalous codeposition was found for all films and an increase in the Co content of the films was observed with increasing Co ion concentration within the electrolyte. The X-ray diffraction (XRD) analyses revealed that the phase structure of the electrodeposited Ni-Co thin films changes from single face-centered cubic (FCC) to a mixture of FCC and hexagonal closepacked (HCP) with the Co content within the films. It was also observed that the mean crystallite size estimated by applying the Scherrer method gradually decreases as the Co content within the films increases. The scanning electron microscopy (SEM) employed for the surface morphology showed that the size and shape of the grains formed on the film surface are strongly dependent on Co content within the films. Magnetic measurements performed by vibrating sample magnetometer (VSM) revealed that the films with different Co contents exhibit different magnetic properties;

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The influence of pH and bath composition on the properties of Ni–Co coatings synthesized by electrodeposition

Cited by 79 publications

References 26 publications

Investigation of the Structural and Magnetic Properties of the Cobalt-Nickel Alloys Fabricated in Various Electrolyte Solutions

Investigation of the Structural and Magnetic Properties of the Cobalt-Nickel Alloys Fabricated in Various Electrolyte Solutions

Effect of the Applied Current Density on the Structural and Magnetic Properties of the Electrodeposited Cobalt-Nickel Alloy Thin Films

Differences Observed in the Phase Structure, Grain Size–Shape, and Coercivity Field of Electrochemically Deposited Ni–Co Thin Films with Different Co Contents

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