Some Considerations Concerning the Obtaining of Some Ag-SnO2 Sintered Electrical Contacts for Low Voltage Power Engineering Switching Devices

Magdalena Lungu; Stefania Gavriliu; Delia Patroi; Mariana Lucaci

doi:10.4028/www.scientific.net/AMR.23.103

Paper Titles

The Separation of Spherical Shape Powder Particles from the Non-Spherical Ones
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Devices for Dry Separation of the Spherical Particles from those Having a Non Spherical Shape from a Metallic Powder
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Fabrication of Metal Powders Having Spherical Shape Particles (an Overview)
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On Massive Powder Coating in Ball Milling
p.99

Some Considerations Concerning the Obtaining of Some Ag-SnO₂ Sintered Electrical Contacts for Low Voltage Power Engineering Switching Devices
p.103

Aspects Concerning Rheological Properties of the CIM’s Binder Systems
p.107

Thermomechanical Processing of some Heavy Alloys from the System W-Ni-Fe through Rotary Forging
p.111

The Study of Fatigue Behaviour at the Contact of some Sintered Materials from Powder Based on Iron
p.115

Mathematical Model of the Sintering Process of Iron-Copper Bearings
p.119

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 23Some Considerations Concerning the Obtaining of...

Some Considerations Concerning the Obtaining of Some Ag-SnO₂ Sintered Electrical Contacts for Low Voltage Power Engineering Switching Devices

Abstract:

The paper presents some considerations concerning the obtaining and characterisation of some new electrical contact pieces of Ag-SnO2-MeO type, where the MeO is an additive chose from the series of metallic oxides WO3, Bi2O3 and CuO. These have a SnO2 content of 9.5 wt. %, a MeO content of 0.5 wt. %, the balance being Ag. The electrical contact materials were manufactured by powder metallurgy techniques using a new type of powder mixtures obtained from SnO2 and MeO powders which were wet mixed, simultaneously with “in situ” Ag synthesis. These present a very uniform and fine dispersion, which in turn leads to improved functional characteristics of the final electrical contact pieces in comparison to the dry mechanical powders mixtures. The new products were designed for low voltage power engineering switching devices working in air at In = 40, 125 and 200 A.

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Periodical:

Advanced Materials Research (Volume 23)

Pages:

103-106

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https://doi.org/10.4028/www.scientific.net/AMR.23.103

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Online since:

October 2007

Authors:

Magdalena Lungu, Stefania Gavriliu, Delia Patroi, Mariana Lucaci

Keywords:

Electrical Contact Material, Low Voltage Switching Device

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