Title :
Some methods for improving aluminium contacts
Author :
Dzekster, N.N. ; Izmailov, V.V.
Author_Institution :
Inst. of Electr. Mounting, Leningrad, USSR
Abstract :
The stability of the contact is a determining factor in the reliable operation of electrical contact devices. Some methods of improving their stability are reported. The results of this study show that the contact properties of aluminium can be significantly improved by alloying with 0.5% Mg and 0.3% Si, thus making aluminium joints as stable as those of copper. The use of a conducting grease containing Ni particles significantly improves the contact stability of aluminium joints since these rupture the oxide film and establish a larger metal-metal contact area protected from oxidation by the grease in the gaps between the contacting asperities
Keywords :
aluminium; aluminium alloys; contact resistance; electrical contacts; magnesium alloys; silicon alloys; Al-0.5% Mg-0.39% Si alloy; Al-Al contacts; Al2O3 film rupture; AlMgSi-AlMgSi contacts; Ni particles; conducting grease containing Ni particles; contact stability; contacting asperities; metal-metal contact area; Aluminum alloys; Contact resistance; Creep; Electrical resistance measurement; Ellipsometry; Equations; Mechanical factors; Surface resistance; Temperature; Testing;
Conference_Titel :
Electrical Contacts, 1990. Proceedings of the Thirty-Sixth IEEE Holm Conference on ... and the Fifteenth International Conference on Electrical Contacts
Conference_Location :
Montreal, Que.
DOI :
10.1109/HOLM.1990.113051
