Formation of Nb3Al Intermetallic Compound by Spark Plasma Sintering.

1 January 1995

journal article
Published by Japan Society of Powder and Powder Metallurgy in Journal of the Japan Society of Powder and Powder Metallurgy

Vol. 42 (11) , 1243-1246
https://doi.org/10.2497/jjspm.42.1243

Abstract

Nb-Al intermetallic compounds have been synthesized from Al/Nb or Nb/NbAl₃ mixed powders by means of spark plasma sintering (SPS). Hot press sintering (HP) has also adopted to obtain these intermetallic compounds. Results obtained from HP technique were compared with those from SPS technique. Results obtained were as follows; Nb₂Al intermetallic compound was obtained by both process. However, formation of intermetallic compounds was advanced more in SPS than in HP process. Moreover, Nb₃Al was synthesized only by SPS process. These differences are thought to come from the effect of pulse electric current of SPS which has originally possessed characteristics SPS process, i.e., activation of powder surface, etc.

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