Reaction synthesis of several titanium oxides through electrical wire explosion in air and in water

Wada, Norio; Akiyoshi, Kazunori; Morita, Koji; Hokamoto, Kazuyuki

doi:10.1016/j.ceramint.2013.03.056

Cited by 15 publications

(6 citation statements)

References 31 publications

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“…Thus, the whole process of pulsed wire discharge, whose duration is in nano-or micro-seconds, can be divided into two processes, joule heating process and subsequent explosion process [35]. The wire types, media and the energy input adjusted by charging voltage are the main factors influencing the joule heating process of pulsed wire discharge [35,[40][41][42], providing a one-step cost-effective route to synthesize nanoparticles. Various nanomaterials have been synthesized through this method, including metal nanopowders, metal compound nanopowders, nanocomposite materials, and multiple carbon nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Liu et al [41] reported the synthesis of Al nanoparticles by pulsed discharge of Al wire in an Argon medium. Wada et al [42,43] obtained TiO 2 and TiN nanopowders using the pulsed discharge of Ti wire in air and liquid nitrogen, respectively. Tanaka et al [44] have recovered tungsten carbide nanoparticles after the pulsed discharge to tungsten wire in liquid paraffin.…”

Section: Introductionmentioning

confidence: 99%

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High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips

et al. 2019

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The synthesis of large-size graphene materials is still a central focus of research into additional potential applications in various areas. In this study, large-size graphene platelets were successfully produced by pulsed discharge of loose graphite strips with a dimension of 2 mm × 0.5 mm × 80 mm in distilled water. The graphite strips were made by pressing and cutting well-oriented expanded graphite paper. The recovered samples were characterized by various techniques, including TEM, SEM, optical microscopy (OM), atomic force microscopy (AFM), XRD and Raman spectroscopy. Highly crystalline graphene platelets with a lateral dimension of 100–200 μm were identified. The high yield of recovered graphene platelets is in a range of 90–95%. The results also indicate that increasing charging voltage improves the yield of graphene platelets and decreases the number of graphitic layers in produced graphene platelets. The formation mechanism of graphene platelets was discussed. This study provides a one-step cost-effective route to prepare highly crystalline graphene platelets with a sub-millimeter lateral size.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips

et al. 2019

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“…Therefore, it is often used as a bonding layer in composite coatings [ 30 ]; (2) High-carbon steel is a commonly used steel tool with high-cost performance. When the high-carbon steel droplets are rapidly cooled from the molten state, a dense martensitic structure is formed with high hardness and high strength, and it is often used as a wear-resistant material [ 31 , 32 , 33 , 34 ]; and (3) aluminum bronze has good mechanical properties, a high thermal conductivity, good fatigue resistance and good wear reduction and wear resistance, so it is an ideal material for manufacturing high-load and high-speed bearings.…”

Section: Coating System Designmentioning

confidence: 99%

Preparation and Performance of Mo/Cu/Fe Multi-Layer Composite Coating with Staggered Spatial Structure by Electro-Explosive Spraying Technology

et al. 2022

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In the present study, electro-explosive spraying technology was used to prepare a multi-layer composite coating with a staggered spatial structure on a 45 steel substrate, and the mechanical properties and wear behavior of the coating were studied. The composite coating was prepared by spraying Mo as the bonding layer, then spraying high-carbon steel and aluminum bronze alternately as a functional coating. The cross-sectional morphology, surface morphology and the properties of the coating were analyzed with a scanning electron microscope (SEM), energy dispersive spectrometer (EDS), electron backscattered diffraction (EBSD) and a 3D profilometer. The bonding strength, friction and wear resistance of the coating were studied by the bonding strength experiment and by the friction and wear experiment. The results showed that it is feasible to prepare a composite coating with a sponge-like spatial structure with electro-explosive technology. There was metallurgical bonding as well as mechanical bonding between the adjacent coating layers. The composite coating had the advantages of uniform thickness, high compactness, high bonding strength and good wear resistance.

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“…Many studies on PWD have been conducted by varying the elements of the wire, the explosion environment of the wire, and the combination of wires. This technology exhibits high universality in various synthetic studies, including high-quality metal nanoparticles [ 16 , 22 , 23 ], oxides [ 24 , 25 ], carbides [ 26 ], nitrides [ 27 ], and alloy nanoparticles [ 28 ]. In these studies, a solid wire was used as the electrical resistive element as a rule.…”

Section: Introductionmentioning

confidence: 99%

Graphene Formation through Pulsed Wire Discharge of Graphite Strips in Water: Exfoliation Mechanism

et al. 2021

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This study aims to clarify the mechanism of exfoliation of graphene through electrical pulsed wire discharge (PWD) of a graphite strip, made by the compression of inexpensive expanded graphite in water. The explosion of the graphite strip was visualized using a high-speed video camera. During the energized heating of the sample, explosions, accompanied by shock waves due to expansion of gas inside the sample, occurred at various locations of the sample, and the sample started to expand rapidly. The exfoliated graphene was observed as a region with low light transmittance. The PWD phenomenon of graphite strips, a type of porous material, is reasonably explained by the change in electrical resistivity of the sample during discharge and the light emission due to energy transition of the excited gas.

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Reaction synthesis of several titanium oxides through electrical wire explosion in air and in water

Cited by 15 publications

References 31 publications

High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips

High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips

Preparation and Performance of Mo/Cu/Fe Multi-Layer Composite Coating with Staggered Spatial Structure by Electro-Explosive Spraying Technology

Graphene Formation through Pulsed Wire Discharge of Graphite Strips in Water: Exfoliation Mechanism

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