Improving dispersion of SnO2 nanoparticles in Ag–SnO2 electrical contact materials using template method

Ćosović, Vladan; Ćosović, Aleksandar; Talijan, N.; Živković, Dragana; Manasijević, Dragan; Minić, Duško

doi:10.1016/j.jallcom.2013.03.094

Cited by 50 publications

(11 citation statements)

References 19 publications

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“…The dispersion of reinforcement phase (Mo) in matrix (Cu) is gradually improved with particle size reduction. Therefore, nanocrystalline powder enables to obtain contacts having superior physical and mechanical properties, as compared to conventional ones, having microcrystalline structure [16]. In addition, nanocrystalline structure provides significant enhancement in arc-erosion performance of electrical contacts, owing to this improvement in properties.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, conventional PM method is combined with mechanical alloying (MA) technique. Much work has been done towards producing and evaluating the electrical performance of contact materials [11][12][13][14][15][16]. However, the synthesis and characterization of a nanocrystalline contact material containing refractory metals have not yet been investigated in detail.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Nanocrystalline Cu25Mo Electrical Contact Material Synthesized via Ball Milling

Biyik

2017

Acta Phys. Pol. A

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In this study, Cu-based Mo-doped composite powder was synthesized by ball milling technique. Elemental powder mixture containing 25 wt.% Mo was milled in a high-energy planetary-type ball mill to achieve homogeneously mixed composite powder. Characterization of the starting and the milled powders was carried out using scanning electron microscopy and laser diffraction analysis. It was found that particle size of powder had gradually decreased with increasing milling duration. scanning electron microscope pictures, corresponding to the later stages of milling process prove that nanocrystalline powders were obtained after milling duration of 30 h. Prolonged milling durations lead to powder contamination, which is undesirable for contact applications, where the purity is of big importance. Therefore, optimum milling duration was determined to be 30 h.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of Nanocrystalline Cu25Mo Electrical Contact Material Synthesized via Ball Milling

Biyik

2017

Acta Phys. Pol. A

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“…In the past, Cd-oxides have been used in the Ag-based contact materials to improve their mechanical and electrical properties. Although the switching performances of these materials are still known as the greatest, Cd-oxide has been replaced gradually by Sn-oxide, due to toxic vapours’ release into the environment while operating [ 21 , 22 , 23 , 24 ]. However, very soon it became obvious that Sn-oxide does not satisfy all the considered criteria either [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Oxidation Behaviour of Microstructurally Highly Metastable Ag-La Alloy

et al. 2022

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A new silver-based alloy with 2 wt.% of lanthanum (La) was studied as a potential candidate for electric contact material. The alloy was prepared by rapid solidification, performed by the melt spinning technique. Microstructural examination of the rapidly solidified ribbons revealed very fine grains of αAg and intermetallic Ag5La particles, which appear in the volume of the grains, as well as on the grain boundaries. Rapid solidification enabled high microstructural refinement and provided a suitable starting microstructure for the subsequent internal oxidation, resulting in fine submicron-sized La2O3 oxide nanoparticle formation throughout the volume of the silver matrix (αAg). The resulting nanostructured Ag-La2O3 microstructure was characterised by high-resolution FESEM and STEM, both equipped with EDX. High-temperature internal oxidation of the rapidly solidified ribbons essentially changed the microstructure. Mostly homogeneously dispersed nano-sized La2O3 were formed within the grains, as well as on the grain boundaries. Three mechanisms of internal oxidation were identified: (i) the oxidation of La from the solid solution; (ii) partial dissolution of finer Ag5La particles before the internal oxidation front and oxidation of La from the solid solution; and (iii) direct oxidation of coarser Ag5La intermetallic particles.

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“…7,8 Tin dioxide (SnO 2 ) is a signicant wide band-gap semiconductor with high chemical stability and good optical, electrical and mechanical properties. 9 It has been widely applied in various elds such as gas sensors, transparent conducting electrodes and dye-sensitized solar cells. [10][11][12] In recent years, the synthesis of 1D SnO 2 structures have been widely reported.…”

Section: Introductionmentioning

confidence: 99%

Growth of SnO₂ nanowire arrays by ultrasonic spray pyrolysis and their gas sensing performance

Sun

Zhang

et al. 2014

RSC Adv.

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Improving dispersion of SnO2 nanoparticles in Ag–SnO2 electrical contact materials using template method

Cited by 50 publications

References 19 publications

Characterization of Nanocrystalline Cu25Mo Electrical Contact Material Synthesized via Ball Milling

Characterization of Nanocrystalline Cu25Mo Electrical Contact Material Synthesized via Ball Milling

Oxidation Behaviour of Microstructurally Highly Metastable Ag-La Alloy

Growth of SnO₂ nanowire arrays by ultrasonic spray pyrolysis and their gas sensing performance

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Improving dispersion of SnO2 nanoparticles in Ag–SnO2 electrical contact materials using template method

Cited by 50 publications

References 19 publications

Characterization of Nanocrystalline Cu25Mo Electrical Contact Material Synthesized via Ball Milling

Characterization of Nanocrystalline Cu25Mo Electrical Contact Material Synthesized via Ball Milling

Oxidation Behaviour of Microstructurally Highly Metastable Ag-La Alloy

Growth of SnO2 nanowire arrays by ultrasonic spray pyrolysis and their gas sensing performance

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Product

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Growth of SnO₂ nanowire arrays by ultrasonic spray pyrolysis and their gas sensing performance