Microstructure, Hardness and Electrical Conductivity of Silver-Metal Oxides Electrical Contact Materials

Wathanyu, Kessaraporn; Rojananan, Siriporn

doi:10.4028/www.scientific.net/amr.486.529

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…When the results obtained were analyzed, it could be established that the microhardness reached by Ag-ZnO-SnO 2 composites was higher than that of the commercial Ag-CdO/Ag-SnO 2 /Ag-ZnO materials (<110 HV) [ 51 , 52 , 53 , 54 ]. This would be mainly due to the fine and homogeneous distribution of oxides produced during the milling process ( Figure 7 ).…”

Section: Resultsmentioning

confidence: 99%

Fabrication and Arc Erosion Behavior of Ag-SnO2-ZnO Electrical Contact Materials

et al. 2023

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This study investigated the synthesis of Ag-SnO2-ZnO by powder metallurgy methods and their subsequent electrical contact behavior. The pieces of Ag-SnO2-ZnO were prepared by ball milling and hot pressing. The arc erosion behavior of the material was evaluated using homemade equipment. The microstructure and phase evolution of the materials were investigated through X-ray diffraction, energy-dispersive spectroscopy and scanning electron microscopy. The results showed that, although the mass loss of the Ag-SnO2-ZnO composite (9.08 mg) during the electrical contact test was higher than that of the commercial Ag-CdO (1.42 mg), its electrical conductivity remained constant (26.9 ± 1.5% IACS). This fact would be related to the reaction of Zn2SnO4’s formation on the material’s surface via electric arc. This reaction would play an important role in controlling the surface segregation and subsequent loss of electrical conductivity of this type of composite, thus enabling the development of a new electrical contact material to replace the non-environmentally friendly Ag-CdO composite.

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Section: Resultsmentioning

confidence: 99%

Fabrication and Arc Erosion Behavior of Ag-SnO2-ZnO Electrical Contact Materials

et al. 2023

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“…In generally, for electrical contact, the contact material is expected to have low hardness on the premise of good conductivity. This is because the material with low hardness could forms conductive contact point easily under the action of contact pressure, thereby reducing the contact resistance [22,23]. However, for sliding parts, it is desirable that the two parts in contact with each other have high hardness because the material with high hardness could exhibit good wear resistance [24,25].…”

Section: Introductionmentioning

confidence: 99%

Ag-doped CrN coating towards exhibiting excellent tribological and electrical properties under current-carrying friction

Hao,

Yanqiu,

Zhengfeng

et al. 2023

Mater. Res. Express

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In order to obtain sliding electrical contact materials with good conductivity and wear resistance, a series of silver doped chromium nitride (CrN-Ag) coatings were prepared by magnetron sputtering. The hardness, elastic modulus, chemical composition and surface morphology of the prepared coatings were characterized in detail. The tribological properties and conductivities of the prepared CrN-Ag coatings were investigated in detail at low and high current densities. The worn surfaces after friction test were also investigated to explore the lubrication mechanisms. The results show that the addition of Ag element could regulate the hardness, elastic modulus, chemical composition and surface morphology of the coatings. The CrN-Ag coating with 23 wt% Ag content exhibited the best conductive and tribological properties under low and high current densities. The analysis of friction surface shows that the conductivity and wear resistance of different coatings were mainly related to the Ag content of coatings.

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Synthesis and application of several sol–gel-derived materials via sol–gel process combining with other technologies: a review

Guo

Zhang

Ding

et al. 2016

J Sol-Gel Sci Technol

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Microstructure, Hardness and Electrical Conductivity of Silver-Metal Oxides Electrical Contact Materials

Cited by 5 publications

References 4 publications

Fabrication and Arc Erosion Behavior of Ag-SnO2-ZnO Electrical Contact Materials

Fabrication and Arc Erosion Behavior of Ag-SnO2-ZnO Electrical Contact Materials

Ag-doped CrN coating towards exhibiting excellent tribological and electrical properties under current-carrying friction

Synthesis and application of several sol–gel-derived materials via sol–gel process combining with other technologies: a review

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