Obtaining Of Ti-ai Alloy Powder From Ti02 - Al203 Oxides By Ca Or Mg Co- Reduction

Résumé: In this paper the results of a study concerning the possibility of obtaining Ti-AI alloy powder by Ca or Mg co-reduction of titanium and aluminum oxides mixture realized at 1247 K during 7.2 to 129.6 Ks in primary vacuum. The reducing metal evaporation is very important, especially in presence of vacuum. The losses have been reduced by using large particles of reducing metal and a compacted mixture. In these conditions the calcium has shown a better results. The product obtained after milling and lixiviation, is a Ti-AI alloy powder constituted from Ti Al, Ti)Al intermetallics and n-Ti solid solution with 0.9% oxygen minimal content after a holding time of 129.6 Ks.

Publié dans la revue: Synthèse