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Simultaneous synthesis and consolidation of nano-structured WSi2-NbSi2 composite by pulsed current activated heating and its mechanical properties

Hyoung-Gon Jo
청정에너지연구소 (Clean-Energy Research Institute)|2014.12|Journal of Ceramic Processing Research|제15권 제6호|pp. 371-375|DOI 10.36410/jcpr.2014.15.6.371

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참고문헌

키워드

CompositeMechanical propertiesSinteringNanostructured materials.
주제분류재료공학

초록

Nanopowders of W, Nb, and Si were fabricated by high-energy ball milling. A dense nanostructured WSi2-NbSi2 composite was simultaneously synthesized and sintered by the pulsed current activated heating method within four minutes using mechanically activated powders of W, Nb, and Si. A high-density WSi2-NbSi2 composite was produced under simultaneous application of an 80-MPa pressure and a pulsed current. The sintering behavior, mechanical properties, and microstructure of the composite were investigated.

Abstract

Nanopowders of W, Nb, and Si were fabricated by high-energy ball milling. A dense nanostructured WSi2-NbSi2 composite was simultaneously synthesized and sintered by the pulsed current activated heating method within four minutes using mechanically activated powders of W, Nb, and Si. A high-density WSi2-NbSi2 composite was produced under simultaneous application of an 80-MPa pressure and a pulsed current. The sintering behavior, mechanical properties, and microstructure of the composite were investigated.

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