Properties and performance of gallium alloys in sliding contacts

Author

Burton, Ralph A. ; Burton, R. Gaines

Author_Institution

Burton Technol. Inc., Raleigh, NC, USA

fYear

1988

fDate

26-29 Sept. 1988

Firstpage

187

Lastpage

192

Abstract

For eutectics of Ga/In/Sn, Ga/In/Zn, and Ga/In/Sn/Zn, room-temperature measurements are reported for viscosity and resistivity. Contact resistance, friction, and film thickness are calculated for tilted pads using these fluids as lubricants. Relative magnitudes of magnetohydrodynamic energy dissipation in an annulus is discussed in terms of a figure of merit, namely, the Hartmann number. The experimental findings show that the gallium alloys display the most favorable characteristics.<>

Keywords

DC motors; brushes; electrical contacts; gallium alloys; indium alloys; materials testing; tin alloys; zinc alloys; Ga-In-Sn alloy; Ga-In-Sn-Zn alloy; Ga-In-Zn alloy; Hartmann number; annulus; characteristics; contact resistance; figure of merit; film thickness; friction; liquid eutectic alloys; liquid metal current collectors; magnetohydrodynamic energy dissipation; performance; resistivity; room-temperature measurements; sliding contacts; tilted pads; viscosity; Conductivity; Contact resistance; Electrical resistance measurement; Friction; Gallium alloys; Lubricants; Magnetohydrodynamics; Tin; Viscosity; Zinc;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Contacts, 1988., Proceedings of the Thirty Fourth Meeting of the IEEE Holm Conference on

Conference_Location

San Francisco, CA, USA

Type

conf

DOI

10.1109/HOLM.1988.16115

Filename

16115