Extreme operating conditions, as encountered in the sliding armature-rail interface in electromagnetic launchers, require novel lubrication schemes. Low melting-point metals may be effective in concurrently lowering the armature-rail electrical resistance and friction. Bismuth-coated armatures reduce rail wear while improving the efficiency over multiple launches. These metals may serve as liquid lubricants for other high-power sliding electrical contact applications.
Volume Subject Area:
Special Symposium in Honor of Professor Ward O. Winer
Topics:
Lubrication,
Rails,
Metals,
Electrical resistance,
Friction,
Lubricants,
Melting point,
Wear
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