Effect of lithium addition on density and oxide-phase morphology of Ag-ZnO electrical contact materials

Joshia, P.B.; Krishnan, P.; Patel, Raj; Gadgeel, V. L.; Ramakrishnan, P.; Kaushik, Vijay Kumar

doi:10.1016/s0167-577x(97)00091-8

Cited by 14 publications

(2 citation statements)

References 3 publications

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“…The metal oxides appear as the black area, while the silver matrix appears as the gray background. The metal oxides are uniform dispersion in matrix, which this appearance is expected to offer the greater resistance to both arc erosion and mechanical wear of electrical contact material [6,7]. Very small voids or pores exist at the interface between the silver matrix and the oxide particles that result to reduce the electrical conductivity [5].…”

Section: Resultsmentioning

confidence: 99%

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

Wathanyu

Rojananan

2012

AMR

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The aim of this paper was to study the microstructure, hardness and electrical conductivity of silver-metal oxides electrical contact materials. The Ag-SnO2, Ag-ZnO and Ag-CuO were prepared by powder metallurgy process. The density, microstructure, hardness and electrical conductivity were investigated. The results showed that the density of silver-metal oxides were 91-96% of theoretical density. The microstructures exhibited that the metal oxides were uniform dispersion in the silver matrix. The hardness of Ag-(5, 10)SnO2 and Ag-(5, 10)ZnO samples were about 100 HV and the hardness of Ag-(5, 10)CuO samples were about 88 HV. The Ag-5CuO samples had the highest electrical conductivity at the value of 91.27 %IACS.

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Section: Resultsmentioning

confidence: 99%

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

Wathanyu

Rojananan

2012

AMR

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“…It has been tens of years for foreigners to study electrical contact elements and materials, for us, it started from 1956. The types of recent electrical contact materials are as follows, Ag-based electrical contact materials, Cu-based electrical contact materials and precious-metal-based electrical contact materials for weak electric [2][3][4][5][6][7][8][9][10][11] . Among these, Ag-based and Cu-based electrical contact materials are the most typical materials [3, 4，7，8] ( AgSnO2, AgCdO, Ag-W ).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Cu on the Electrical Properties of Ti(C, N)-Based Cermets

Pang

Deng

Zhang

et al. 2011

AMR

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Cermets Ti(C，N)80%Co(10-x)% TiC10% Cux%(wt%，x=0，1，2，3， 4， 5) were prepared by powder metallurgy method under vacuum condition at 1500°C and the effects of Cu element to the electrical resistivity and flexural strength were studied in this paper. It turns out the electrical resistivity of the samples obviously decreases with the introduction of Cu element, but the electrical resistivity of the samples increases when the amount of Cu element in the samples becomes more. The flexural strengths of the samples decrease with the amount of Cu element increasing. Ti（C，N）80% Co9%TiC10% Cu1% shows the lowest electrical resistivity and the biggest flexural strength, 7.35*10-7Ω•m and 50.6Mpa. This may be due to the big wetting angle between Cu and the powders of the based body. With the amount of Cu element increasing, the obvious interfaces are made thus the electrical resistivity becomes bigger.

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Influence of ball‐milling on the oxidation behavior of Ag–Zn alloy powders

Goto

et al. 2010

Materials & Corrosion

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The gas atomized Ag-15.2 at% Zn alloy powders were treated using ball-milling. The effect of ball-milling on surface morphology, microstructure, and oxidation behavior of the alloy powders was investigated. The results showed that ballmilling treatment enhanced the oxidation rate of Ag-Zn alloy powders due to the increase of dislocation density and the decrease of the diffusion distance of oxygen during internal oxidation. The fully oxidized time of Ag-Zn alloy powders decreases with the ball-milling time. In addition, the ball-milling treatment not only changes the oxidation mechanism but also improves microstructure and properties of the Ag-ZnO materials fabricated by internal oxidation.

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Effect of lithium addition on density and oxide-phase morphology of Ag-ZnO electrical contact materials

Cited by 14 publications

References 3 publications

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

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

The Influence of Cu on the Electrical Properties of Ti(C, N)-Based Cermets

Influence of ball‐milling on the oxidation behavior of Ag–Zn alloy powders

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