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This article discusses recent synchrotron radiation based measurements of nanoparticle formation between arcing contacts. The studied material is typical in contact applications, Ag and AgSnO2.
In a previous work we observe that the vibration of contact interfaces is the main cause of contact voltage fluctuations due to the so called fretting corrosion phenomenon. In fact the process of generated particles by mechanical wear produce the increase of contact voltage frequently assimilated as high contact resistance. The main objective of this work is to examine conjointly contact voltage and...
Contact resistance is usually determined by the ratio of the voltage to the current and the increase of this value means that the contact interface is degraded. However for high currents, this ratio is not constant so Ohm's law does not apply. In this paper, we study the electrical behaviour through degraded surface materials (Ag and Ag with various metal oxides) aged by break arcing up to 90A at...
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