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Title of Article

CHANGES IN MECHANICAL PROPERTIES OF ELECTRICAL CONTACTS DURING PULSED HEATING UP TO MELTING


Issue
4
Date
2011

Article type
scientific article
UDC
 
Pages
1675-1677
Keywords
 


Authors
Pavleyno M.A.
Sankt-Peterburgskiy gosuniversitet, Nauchno-obrazovatelnyy tsentr «Elektrofizika», Sankt-Peterburg

Pavleyno O.M.
Sankt-Peterburgskiy gosuniversitet, Nauchno-obrazovatelnyy tsentr «Elektrofizika», Sankt-Peterburg

Safonov M.S.
Sankt-Peterburgskiy gosuniversitet, Nauchno-obrazovatelnyy tsentr «Elektrofizika», Sankt-Peterburg


Abstract
Pulsed heating of high-current electrical contacts is studied in a wide temperature range up to the start of melting. The analysis involved the data of a large batch of experiments on current pulses of quasi-harmonic shape and duration, comparable with power frequency period, passing through electrodes. Numerical data processing yielded information on the variation of contact spot area with time, on the temperature distribution and, hence, the distribution of mechanical and electrical properties of the electrode material in the contact region.

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