Phase Structures and Magnetic Properties of Graphite Nanosheets and Ni-Graphite Nanocomposite Synthesized by Electrical Explosion of Wire in Liquid

Nguyen, Minh-Hoang; Kim, Jinhyung; Lee, Jung Goo; Kim, Jin-Chun

doi:10.1007/s12540-018-0105-8

Cited by 6 publications

(3 citation statements)

References 30 publications

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“…The Cu-Ni nanopowders were produced through the electrical explosion of wire in liquid method. This technique has been reported previously [13], therefore we would like to skip describing in this work. The experimental parameters of the EEW process in our study are presented in Table I.…”

Section: Methodsmentioning

confidence: 99%

Archives of Metallurgy and Materials

Thuyet-Nguyen,

Kim

2019

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Cu-Ni composite nanoparticles were successfully synthesized by electrical explosion of wire (EEW) method. Cu-Ni alloy and twisted wires with various Ni contents were used as the feeding material for a 3 kV charging voltage EEW machine in an ethanol ambient chamber. The phase structure and magnetic properties of the as-fabricated samples were studied. It was established that the prepared powders after drying have a spherical form with the particle size is under 100 nm. XRD analysis indicated that the nanopowders consisted of binary Cu-Ni phases. Only pure phases of the intermetallic compound were observed in the XRD patterns of the samples. The synthesized intermetallic Cu-Ni alloy nanopowders reveal magnetic behaviors, however, the lower Ni content samples exhibited paramagnetic behaviors, meanwhile, the higher Ni content samples exposed ferromagnetic properties.

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Section: Methodsmentioning

confidence: 99%

Archives of Metallurgy and Materials

Thuyet-Nguyen,

Kim

2019

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“…Titanium alloys benefits from its high specific strength, high specific modulus, good oxidation resistance, and corrosion resistance, in recent years, it has been widely used in aerospace, marine and chemical industries. [1][2][3][4] However, titanium alloy has the characteristics of low hardness and poor wear resistance which limited the use of titanium alloys in industrial sector. [5][6][7][8] At present, there are many surface strengthening technologies, such as welding, arc ion plating and laser cladding.…”

Section: Introductionmentioning

confidence: 99%

Effect of CeO₂ on crack sensitivity and tribological properties of Ni60A coatings prepared by laser cladding

Gong

Miao

et al. 2021

Advances in Mechanical Engineering

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All the time, the wear resistance of TC4 titanium alloy restricts its application in friction parts. In order to solve this problem, in this work, CeO2/Ni60A composite coatings (0, 1, 2, 3, 4 wt.% CeO2) were prepared on TC4 titanium alloy by laser cladding technology. The detection and characterization of the coatings were mainly carried out by X-ray diffraction (XRD), Scanning electron microscope (SEM), Energy-dispersive spectrometer, Vickers hardness test, and wear test. The results showed that appropriate proportion of CeO2 powder could effectively reduce the crack sensitivity of Ni60A coating on TC4 substrate. While the amount of CeO2 powder was 3wt.%, there were no obvious cracks, pores, and other defects in the coating. Coatings mainly consisted of Ti2Ni, TiC, TiB2, Ce2O3, and the substrate α–Ti. CeO2 has negligible influence on the composition of the phase, but it significantly increased the absorption rate of the powder to light, promoted the fluidity of the molten pool. Among five coatings, the average hardness of the 3Ce coating was the highest and the highest hardness value could reach 1163.7 HV0.3, which was 3.58 times higher than TC4 substrate, the friction coefficient was 0.307, and the wear rate was 1.11 × 10−5 mm3/N m, which reflected extremely high wear resistance performance. Adding an appropriate amount of CeO2 improved the microstructure of the coating, and realized the fine crystal strengthening of the coating.

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“…The nature of these inorganic acids affects the subsequent processes used to separate the metal ions from the leaching solution. And because the effluents from these separation steps contain these inorganic acids, their disposal is of environmental concern [1,2]. A number of methods are available to treat effluents containing inorganic acids, including neutralization, diffusion dialysis, membrane process, precipitation, solvent extraction, and ion exchange processes [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Extraction Behavior of Hydrogen Ion by an Ionic Liquid Mixture of Aliquat 336 and Cyanex 272 in Chloride Solution

Le¹,

Son²,

Lee³

2019

Korean J. Met. Mater.

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During the extraction of metal ions from a weak acidic chloride solution by ionic liquids consisting of an organophosphorus extractant and Aliquat 336, the equilibrium pH is sometimes observed to be higher than the initial pH. To compare the hydrogen ion extraction behavior of tertiary and quaternary amines, Alamine 336, Aliquat 336 and their mixture with Cyanex 272, and an ionic liquid (prepared by mixing Cyanex 272 and Aliquat 336, R 4 NA) were employed in solvent extraction experiments at a pH range from 0.05 to 5. R 4 NA showed the highest extraction percentage of hydrogen ions. The initial pH of the chloride solution had a great effect on the extraction of hydrogen ions and the equilibrium pH value produced by these extractants. The order of hydrogen ion extraction was R 4 NA>Alamine 336>mixture of Alamine 336 and Cyanex 272. The addition of sodium chloride improved phase separation. The solvent extraction reaction of hydrogen ions with R 4 NA in the chloride solution was verified by applying a slope analysis method to the extraction data. UV-Vis and FT-IR spectra indicated a strong interaction between the hydrogen ions and R 4 NA during the extraction. The obtained results provide some information on the change in solution pH during the extraction of metal ions from weak acidic solution by an ionic liquid (R 4 NA).

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Phase Structures and Magnetic Properties of Graphite Nanosheets and Ni-Graphite Nanocomposite Synthesized by Electrical Explosion of Wire in Liquid

Cited by 6 publications

References 30 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Effect of CeO₂ on crack sensitivity and tribological properties of Ni60A coatings prepared by laser cladding

Extraction Behavior of Hydrogen Ion by an Ionic Liquid Mixture of Aliquat 336 and Cyanex 272 in Chloride Solution

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Phase Structures and Magnetic Properties of Graphite Nanosheets and Ni-Graphite Nanocomposite Synthesized by Electrical Explosion of Wire in Liquid

Cited by 6 publications

References 30 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Effect of CeO2 on crack sensitivity and tribological properties of Ni60A coatings prepared by laser cladding

Extraction Behavior of Hydrogen Ion by an Ionic Liquid Mixture of Aliquat 336 and Cyanex 272 in Chloride Solution

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Product

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Effect of CeO₂ on crack sensitivity and tribological properties of Ni60A coatings prepared by laser cladding