Effective Thermal and Electrical Conductivities of AgSnO2 During Sintering. Part I: Experimental Characterization and Mechanisms

Brisson, Elodie; Carré, Patrick; Desplats, Henri; Rogeon, Philippe; Kéryvin, Vincent; Bonhomme, Alexandre

doi:10.1007/s11661-016-3781-3

Cited by 11 publications

(4 citation statements)

References 24 publications

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“…The contact materials, as the core part of the circuit, play an irreplaceable role in the switch of low‐voltage and high‐voltage electrical appliances. [ 1,2 ] The service life of the electrical equipment is affected by the performance of contact materials. The contact materials with high performance can greatly improve the safety and reliability of the equipment.…”

Section: Introductionmentioning

confidence: 99%

Characterization/mechanical behavior of AgCuOSnO₂ composites: Experimental and finite element study

Yang

Zhou

2021

Polymer Composites

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Herein, the effects of different content of SnO2 on the stress, strain, and microstructure of AgCuO(10)SnO2(x = 2,5,8) composites during hot extrusion were studied by using finite element analysis and compared with the actual hot extrusion experiment. The results show that cubic CuO gradually becomes fibrous mainly due to shear strain during hot extrusion, but monoclinic CuO and SnO2 only produce slight deformation. After hot extrusion, the reinforced phases CuO and SnO2 are redistributed to make the microstructure more uniform, which is in good agreement with the actual experimental results. In addition, by comparing the mechanical properties of samples with different content of SnO2, when the SnO2 content is 5%, AgCuOSnO2 has the highest conductivity, strain, and tensile strength.

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Section: Introductionmentioning

confidence: 99%

Characterization/mechanical behavior of AgCuOSnO₂ composites: Experimental and finite element study

Yang

Zhou

2021

Polymer Composites

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“…Among the ERS advantages, in comparison with the conventional PM cold-pressing and furnace sintering route, the use of relatively low pressures (around 100 MPa) to achieve very high densities, the use of extraordinarily short processing times (around 1 s), and the possibility of operating in the air, without protective atmospheres, can be mentioned. Some recent works dealing with this modality can be found in [15][16][17]. In these works, a process conceptually similar to the ERS technique was successfully applied to iron-base materials, gold, silver tin oxide, titanium, or rare-earth magnets.…”

Section: Introductionmentioning

confidence: 99%

Influence of Processing Parameters on the Conduct of Electrical Resistance Sintering of Iron Powders

Fernández

Astacio

Caballero

et al. 2020

Metals

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The influence of the applied pressure and electrical parameters on the macrostructure of specimens consolidated by the medium-frequency electrical resistance sintering technique (MF-ERS) is analysed in this work. This technique is based on the application of pressure to a mass of conductive powder that, simultaneously, is being crossed by a high intensity and low voltage electric current. The simultaneous action of the pressure and the heat released by the Joule effect causes the densification and consolidation of the powder mass in a very short time. The effect of the current intensity and heating time on the global porosity, the porosity distribution, and the microhardness of sintered compacts is studied for two applied pressures (100 and 150 MPa). For the different experiments of electrical consolidation, a commercially available pure iron powder was chosen. For comparison purposes, the properties of the compacts consolidated by MF-ERS are compared with the results obtained by the conventional powder metallurgy route (cold pressing and furnace sintering). Results show that, as expected, higher current intensities and dwelling times, as well as higher pressures and the consolidation of compacts with lower aspects ratios, produce denser materials.

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“…Comparing the ERS technique with the conventional powder metallurgy (P/M) route of cold-pressing and furnace sintering, three aspects are noteworthy: (i) the high densification rates achieved with the ERS at low pressures (around 100 MPa), (ii) the very short processing times (around 1-2 s), and (iii) the possibility of not using protective atmospheres, as a consequence of (ii). However, the usual non-homogeneous temperature distribution, inside the compacts, during ERS (or a similar technique) makes it difficult to achieve a homogeneous microstructure (and isotropic properties) throughout the compact [8][9][10][11]. In addition, finding a suitable material that provides acceptable cost and durability for the dies is also a problem [12].…”

Section: Introductionmentioning

confidence: 99%

Nickel Porous Compacts Obtained by Medium-Frequency Electrical Resistance Sintering

et al. 2020

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A commercially pure (c.p.) nickel powder was consolidated by Medium-Frequency Electrical Resistance Sintering (MF-ERS). In this consolidation technique, a pressure and the heat released by a high-intensity and low-voltage electrical current are concurrently applied to a metal powder mass. A nickel powder with a high tap porosity (86%) and a low applied pressure (only 100 MPa) is chosen in order to be able to obtain compacts with different levels of porosity, to facilitate the study of the porosity influence on the compact properties. The influence of current intensity and heating time on the global porosity values, the porosity and microhardness distribution, and the electrical conductivity of the sintered compacts is studied. The properties of the compacts consolidated by MF-ERS are compared with the results obtained by the conventional powder metallurgy route, consisting of cold pressing and furnace sintering. A universal equation to describe the porosity influence on all the analyzed properties of powder aggregates and sintered compacts is proposed and validated.

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Effective Thermal and Electrical Conductivities of AgSnO2 During Sintering. Part I: Experimental Characterization and Mechanisms

Cited by 11 publications

References 24 publications

Characterization/mechanical behavior of AgCuOSnO₂ composites: Experimental and finite element study

Characterization/mechanical behavior of AgCuOSnO₂ composites: Experimental and finite element study

Influence of Processing Parameters on the Conduct of Electrical Resistance Sintering of Iron Powders

Nickel Porous Compacts Obtained by Medium-Frequency Electrical Resistance Sintering

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Effective Thermal and Electrical Conductivities of AgSnO2 During Sintering. Part I: Experimental Characterization and Mechanisms

Cited by 11 publications

References 24 publications

Characterization/mechanical behavior of AgCuOSnO2 composites: Experimental and finite element study

Characterization/mechanical behavior of AgCuOSnO2 composites: Experimental and finite element study

Influence of Processing Parameters on the Conduct of Electrical Resistance Sintering of Iron Powders

Nickel Porous Compacts Obtained by Medium-Frequency Electrical Resistance Sintering

Contact Info

Product

Resources

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Characterization/mechanical behavior of AgCuOSnO₂ composites: Experimental and finite element study

Characterization/mechanical behavior of AgCuOSnO₂ composites: Experimental and finite element study