Production of low cost titanium (original) (raw)

1998

Abstract

ABSTRACT The production cost of titanium and its alloys can be reduced considerably by synthesizing them from precursor compounds, by direct chemical reduction at ambient temperatures. In the present work, mechanochemical processing has been employed to synthesize Ti, Ti-Al, Ti-V, and Ti-Al-V in powder form by chemically reducing combinations of the respective metal chlorides with Mg or CaH2. Use of CaH2 for the reduction reactions resulted in the formation of hydrides of titanium and its alloys. The hydrided powders are passive against oxidation during leaching. In an attempt to reduce the cost of titanium production even further, studies of the direct reduction of TiO2 have been carried out. In all these processes complete removal of by-product salts from metal powder agglomerates has still to be achieved along with a minimization of interstitial pick-up during milling.

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