DTA and TGA Studies of Four Ag-MeO Electrical Contact Materials

Shen, Yuan-Shou; Gould, L.J.; Swann, S.J.

doi:10.1109/tchmt.1985.1136505

Cited by 13 publications

(1 citation statement)

References 8 publications

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“…Ag-CdO composites (10.0–15.0 wt. % CdO), have been the preferred material for electrical contacts applications for many years [ 1 ] thanks to their high electrical and thermal conductivities [ 2 , 3 ], high resistance to arcing [ 3 , 4 , 5 ], high welding adhesion resistance [ 6 , 7 ], low contact resistance [ 6 ], hardness and strength [ 2 , 3 ]. Nevertheless, given the toxic nature of Cd and its compounds [ 7 , 8 , 9 ], the use of this element is expected to be minimized shortly.…”

Section: Introductionmentioning

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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