ABSTRACT
A review in 1985 given by B. T. Reagor and C. A. Russell showed that dust contamination of contacts was a problem that could cause contact failure in telecommunication systems. Thus, electrical contact problems due to corrosive air and dust contamination were substantially reduced in industrial countries and the research effort was considerably reduced. A dust particle carrying an electric charge may build up a tiny static electric field at the metal surface. The complexity of the effect of dust particle contamination can be summarized by three major influencing factors: The environment which includes the size and composition of particles. Second are different materials contained in the dust have their own inherent characteristics with respect to the performance of electrical contacts such as electrical and mechanical behavior, chemical corrosion and so on. Third is the various application conditions, for example, the micromovement at the contact interface; the special materials involved.
