About the article
A.F. GUSEV, V.V. IZMAILOV,
The paper describes the results of an experimental study of friction and electrical contact characteristics of the four most common materials for electrical contacts. The studies were carried out on a friction machine of the HP type (horizontal plane) according to the scheme of the end friction of the same materials with a reciprocal overlapping coefficient tending to zero at temperatures from 20 up to 150 °C. The experimental dependences of the friction coefficient f and the contact electrical resistance R on temperature in static and sliding friction are presented. Experiments have shown that at elevated temperatures surface oxide films have a decisive influence on the operational characteristics of the studied electrical contact materials. It is established that the experimental results are in good agreement with the previously obtained data on the parameters of the specific friction force, thickness and strength of oxide films for the studied materials.
friction, coefficient of friction, contact electrical resistance, temperature, oxide films.