Composite Solid Armature Consolidation by Pulse Power Processing: A Novel Homopolar Generator Application in EML Technology

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Persad, C.
Peterson, D.R.
Zowarka, Jr, R.C.

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Graded electrical resistance and assured sliding contact are among the desirable characteristics for the solid armatures used in railguns attainable through the use of composite materials. Metal-metal, metal-ceramic, and metal-polymer composites are generic types of potential solid armature materials. The authors describe the production of these composites by a novel experimental approach that uses a homopolar generator in a pulse-powered materials consolidation system. The processing of copper-tungsten and aluminium-alumina composites is used to demonstrate versatility of the homopolar generator as a materials processing tool. Powder metallurgy and laminate bonding approaches have been utilized. Composite solid armature materials have been consolidated with subsecond high-temperature exposure. Densification in the solid state proceeds by a warm/hot forging mechanism, and fully dense composites are obtained by a combined application of pressure and a controlled energy input


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C. Persad, D.R. Peterson, and R.C. Zowarka Jr., “A composite solid armature consolidation by pulse power processing: a novel homopolar generator application in EML technology,” IEEE Transactions on Magnetics, vol. 25, no. 1, January 1989, pp. 429-432.