Formation and effects of CuO nanoparticles on Ag/SnO2 electrical contact materials

Li, Guijing; Cui, Huanxian; Chen, Jun; Fang, Xue-Qian; Feng, Wenjie; Liu, Jinxi

doi:10.1016/j.jallcom.2016.12.092

Cited by 53 publications

(6 citation statements)

References 20 publications

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“…It is worth noting that a minor amount of W element is also detected, which comes from the W anode, due to the multi-electric arc. What’s more, previous studies have shown that the addition of a single metal oxide in electric contact materials can effectively improve the wettability between the matrix material and the oxide, reducing both the droplet splashes and the mass loss of a cathode material [38,39,40]. The effect of TiO 2 and CuO on the wettability of Cu-Ti 3 AlC 2 still needs further systematic study in the future.…”

Section: Resultsmentioning

confidence: 99%

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Huang

Feng

et al. 2019

Materials

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A Cu-Ti3AlC2 cathode was eroded by arc discharging at 10 kV. The cross-sectional and horizontal morphologies of the eroded surface were recorded by a field emission scanning electron microscope (FE-SEM). The energy dispersive X-ray spectroscopy (EDS) and Raman spectrometry were carried out to analyze the compositions. The color-eroded surface was obtained by a three-dimensional laser scanning confocal microscope (3D LSCM). After 100 times of arc erosion, the Cu-Ti3AlC2 melted and resolidified. An eroded layer about 10 μm thick was formed, covered with pits, protrusions, and pores. The breakdown current was kept between 37 to 43 A. Under the action of a high temperature arc, Cu-Ti3AlC2 was oxidized to CuO and TiO2, accompanying the evaporation of the Al element.

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Section: Resultsmentioning

confidence: 99%

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Huang

Feng

et al. 2019

Materials

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“…Furthermore, the addition of different metal oxides such as CuO, In 2 O 3 , etc., and oxides of rare earth elements (La 2 O 3 , CeO 2 , etc.) can effectively improve the wettability between Ag and SnO 2 , thereby reducing the contact resistance and temperature rise during arcing [16][17][18][19]. Wang J et al [20] found that CuO-doped AgSnO 2 material has denser microstructure, higher hardness, and better arc erosion resistance than AgSnO 2 materials.…”

Section: Introductionmentioning

confidence: 99%

Effects of NiO content on the microstructure and mechanical properties of AgSnO₂NiO composites

Zhou

Chen

Liu

et al. 2019

Science and Engineering of Composite Materials

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The AgSnO2NiO composites were prepared by internal oxidation method. The effects of different NiO content on the microstructure and mechanical properties of AgSnO2NiO composites were studied. The phase structure and surface morphology of the prepared AgSnO2NiO materials were characterized by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Metallographic Microscopy (MM). The results showed that the AgSnO2NiO composites with different NiO content can be obtained by the process of preoxidation of AgSn alloy powder and internal oxidation of ingot containing Ni. The agglomeration phenomenon of Ni in the silver matrix was serious, which led to the agglomeration of in-situ generated NiO particles after internal oxidation. After the multi-pass drawing, the SnO2 particles dispersedly distributed in the AgSnO2NiO composites and the NiO particles gradually dispersed from the agglomerated state of the sintered ingot billet. The hardness of the prepared AgSnO2NiO composites increased slightly with the increase of NiO content. The mechanical properties test showed that the introduction of NiO particles significantly improved the tensile strength and elongation of AgSnO2 materials to a certain degree. Adding proper amount of NiO is beneficial to improve the overall performance of AgSnO2 materials.

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“…Therefore, depending on the type of application, contact materials should be optimized to provide reliability, long contact life and low cost [6]. Much work has been done towards producing and evaluating the electrical performances of contact materials [6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effect of Polyethylene Glycol on the Mechanical Alloying Behavior of Cu-W Electrical Contact Material

Biyik

2018

Acta Phys. Pol. A

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In this study, the effect of polyethylene glycol on the particle size and morphology of Cu25W composite powder was investigated. For this purpose, commercial elemental copper and tungsten powders were milled in a planetary-type ball mill. Milling conditions, namely ball-to-powder weight ratio and milling speed, were selected to be 10:1 and 300 rpm, respectively. In order to avoid agglomeration and to decrease the tendency of cold welding among powder particles, polyethylene glycol at the amount of 2 wt% was used as a process control agent. Morphological evolution of milled powders was investigated using scanning electron microscopy. In addition, the variation of particle size as a function of milling duration was examined using laser diffraction analysis. It was found that powder particle size gradually decreased with increasing milling duration. However, compared to the powder mixture without the process control agent, the powder mixture containing polyethylene glycol tends to lower the milling duration to achieve the same amount of particle size reduction. As a result of this effort, the usage of polyethylene glycol as a process control agent was found to be effective to obtain a composite powder with smaller particle sizes, especially in the earlier stages of milling process.

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Formation and effects of CuO nanoparticles on Ag/SnO2 electrical contact materials

Cited by 53 publications

References 20 publications

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Effects of NiO content on the microstructure and mechanical properties of AgSnO₂NiO composites

Effect of Polyethylene Glycol on the Mechanical Alloying Behavior of Cu-W Electrical Contact Material

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Formation and effects of CuO nanoparticles on Ag/SnO2 electrical contact materials

Cited by 53 publications

References 20 publications

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Effects of NiO content on the microstructure and mechanical properties of AgSnO2NiO composites

Effect of Polyethylene Glycol on the Mechanical Alloying Behavior of Cu-W Electrical Contact Material

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Effects of NiO content on the microstructure and mechanical properties of AgSnO₂NiO composites