Elaboration d'une poudre prealliee a base de tial par reduction des oxydes alo-tio

Autor:	Said Boudebane, Samia Lemboub, Zoubeida Bouremoum
Rok vydání:	2000
Předmět:	Materials science Aqueous solution Magnesium Alloy Metallurgy Intermetallic Oxide chemistry.chemical_element engineering.material Metal chemistry.chemical_compound chemistry visual_art Materials Chemistry visual_art.visual_art_medium engineering Leaching (metallurgy) Solid solution
Zdroj:	Annales de Chimie Science des Mat�riaux. 25:391-400
ISSN:	0151-9107
DOI:	10.1016/s0151-9107(00)80015-x
Popis:	In this paper the results of a study concerning the possibility of obtaining Ti3Al intermetallic powder by calcium or magnesium co-reduction of a Ti and Al oxide mixture performed at 1247 K during 7.2 to 129.6 Ks, in primary vacuum, are presented. The evaporation of the reducing metal is very important, especially in the presence of vacuum. The losses have been reduced by using large particles of reducing metal and a compacted mixture with cylindrical shape of porous samples. In these conditions calcium has shown a better result. The product obtained after milling and leaching by CH3COOH aqueous solution is a Ti-Al alloy powder consisting of TiAl and Ti3Al intermetallics and of an α-Ti solid solution with a minimum oxygen content of 0.9 % after a holding of 129.6 Ks.
Databáze:	OpenAIRE
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