The wear and arc erosion behavior of novel copper based functionally graded electrical contact materials fabricated by hot pressing assisted electroless plating

Güler, Onur; Varol, Temel; Alver, Ümit; Biyik, Serkan

doi:10.1016/j.apt.2021.05.053

Cited by 88 publications

(11 citation statements)

References 56 publications

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“…In particular, electroless plating is of great significance for improving the conductivity and service life span of some materials with high abrasive resistance requirements, such as electric contact materials. In addition, the core–shell structure composites prepared by electroless plating have good anti-fretting corrosion and anti-wear resistance properties 11 . Due to lack of catalytic sites, inert graphene does not possess autocatalytic activity, which generally needs to be pretreated by sensitization and an activation process during electroless plating, some complex technical problems still exist in these two-step processes 12 .…”

Section: Introductionmentioning

confidence: 99%

Effects of ultrasonic-assisted nickel pretreatment method on electroless copper plating over graphene

Peng

Tan

Venkataraman

et al. 2022

Sci Rep

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In this paper, copper deposited graphene was fabricated through electroless plating. A novel and facile pretreatment method is introduced based on ultrasonic treatment with nickel nano-particles as the catalytic core. This method abandons the sensitization and activation process in the traditional pretreatment that reduces the time and economic cost dramatically. The static contact angle was determined by an Olympus BX51M optical microscope. The surface morphology and plating composition were characterized via scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS), the infrared radiation (IR) transmittance spectra of the copper plated graphene were measured by Fourier transform infrared spectroscopy (FTIR), the layer structure was measured by Raman spectrum, the phase identification was identified by X-ray diffraction (XRD), the thermogravimetric analysis (TGA) (Q5000 TA instruments, USA) was carried out to detect the thermal characteristics. The electrical resistivity of copper-plated graphene was performed in an especially designed apparatus. The results show that the surface of graphene is coarsened, and the size is reduced after ultrasonic treatment, which can facilitate the nucleation and fine particle distribution of metal. The electroless plated efficiency of copper of the nickel pretreatment copper-plated graphene is 64.27 wt%, higher than that of generic copper-plated graphene at 58.62 wt%. The resistivity decreases rapidly from 1.69 × 10–2 Ω cm of the original Gr to 0.79 × 10–2 Ω cm of Cu/Ni@Gr due to the large number of fine copper particles scattered around the graphene.

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Section: Introductionmentioning

confidence: 99%

Effects of ultrasonic-assisted nickel pretreatment method on electroless copper plating over graphene

Peng

Tan

Venkataraman

et al. 2022

Sci Rep

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“…dendritic/electrolytic copper particles, the silver network was thinned and dispersed among the particle boundaries. The fact that silver metal has a more ductile and soft structure compared to copper and has a lower melting point encourages it to settle in the gaps that occur at the grain boundaries with the deformation during hot-pressing [42,43]. The microstructure of the C5 samples is composed of electroless silver-coated dendritic copper powders, in which all the particles used in the production of the samples by hot pressing, was given in Figure 4(e).…”

Section: Resultsmentioning

confidence: 99%

“…The fact that silver metal has a more ductile and soft structure compared to copper and has a lower melting point encourages it to settle in the gaps that occur at the grain boundaries with the deformation during hot-pressing [42,43]. The microstructure of the C5 samples is composed of electroless silver-coated dendritic copper powders, in which all the particles used in the production of the samples by hot pressing, was given in Since no silver-free particles were used in C5s, it was seen that the silver layer around all the dendrite branches was homogeneously distributed in the microstructure, as also understood from Figure 4(e ′ ).…”

Section: Microstructurementioning

confidence: 99%

Novel advanced copper-silver materials produced from recycled dendritic copper powders using electroless coating and hot pressing

et al. 2022

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In this study, copper powders with dendritic morphology were produced by the electrolysis method, and then silver coating was applied to these powders by an electroless coating method. The bulk samples were fabricated by hot pressing method using different ratios of copper and silver-plated copper powders. The results showed that the electroless silver coating layer provided a strong bond at the particle boundaries of the samples, significantly improving the physical and mechanical properties of the materials. Accordingly, the hardness, tensile strength, electrical and thermal conductivity values of the samples produced from silver-plated dendritic copper particles were determined to be approximately 98 HB, 185 MPa, 102 IACS% and 402 W mK −1 , respectively. In addition, the oxidation resistance of the sample produced from completely silver-coated copper powders is 4 times higher than that of pure copper.

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“…For water transport experiments, the free-standing rGO films were placed on a clean glass substrate and silver electrodes were used as contact materials as shown in Figure 4a. Such a method of contacting the nanomaterial surface has been extensively used in the literature [25][26][27][28][29][30][31][32]. The fluid flow is along the longitudinal direction of the rGO film as indicated in Figure 4b.…”

Section: Device Fabrication and Setup For Flow Transport Experimentsmentioning

confidence: 99%

Energy harvesting from water flow through porous reduced graphene oxide networks

Panchal,

Koratkar

2024

The Journal of Engineering

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Using a syringe pump setup, the authors conducted water flow experiments through porous reduced graphene oxide (rGO). A variety of anions and cations were added to the water to study its effect on energy harvesting. More specifically, the authors performed tests to study effect of: (1) ion concentration in water, (2) type of anion used, (3) type of cation used, and (4) effect of flow rate. The test data indicates that water flow through rGO networks can directly induce drift of charge carriers in graphene and thus generate electricity. Graphene is ideally suited for this application, since it possesses high mobility charge carriers that are ready to be coupled to moving ions present in the flowing fluid. The proposed rGO material could enable harvesting of the ubiquitous, abundant, and renewable mechanical energy of moving water directly to electrical energy. Unlike traditional schemes, the graphene material directly converts the flow energy into electrical energy without the need for moving parts. Such graphene coatings could potentially replace conventional batteries (which are environmentally hazardous) in low‐power, low‐voltage, and long service‐life applications. Once scaled up, this concept offers a potentially transformative approach to energy harvesting, as opposed to incremental advances in current technologies.

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The wear and arc erosion behavior of novel copper based functionally graded electrical contact materials fabricated by hot pressing assisted electroless plating

Cited by 88 publications

References 56 publications

Effects of ultrasonic-assisted nickel pretreatment method on electroless copper plating over graphene

Effects of ultrasonic-assisted nickel pretreatment method on electroless copper plating over graphene

Novel advanced copper-silver materials produced from recycled dendritic copper powders using electroless coating and hot pressing

Energy harvesting from water flow through porous reduced graphene oxide networks

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