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Erschienen in: Journal of Materials Science 7/2017

29.12.2016 | Original Paper

The effect of molten salt on oxygen removal from titanium and its alloys using calcium

verfasst von: Yang Xia, Zhigang Zak Fang, Pei Sun, Ying Zhang, Tuoyang Zhang, Michael Free

Erschienen in: Journal of Materials Science | Ausgabe 7/2017

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Abstract

The sensitivity of titanium to increasing oxygen content and the high cost of reducing oxygen content in titanium have prevented its broader applications. Here we report a low-temperature de-oxygenation process, which can remove oxygen from titanium powders to less than 1000 ppm from original oxygen levels of over 20,000 ppm. The effect of molten salt on de-oxygenation was investigated in this study. The calcium halide-bearing molten salt facilitates the dissolution of solid calcium and creates a metal-molten solution condition by forming intermediate Ca+ ions and finally Ca2+ ions and electrons (e ). The molten salt enables the de-oxygenation of Ti at temperatures lower than the melting point of calcium. It will be shown that the de-oxygenation temperature can be as low as 873 K (600 °C).

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Metadaten
Titel
The effect of molten salt on oxygen removal from titanium and its alloys using calcium
verfasst von
Yang Xia
Zhigang Zak Fang
Pei Sun
Ying Zhang
Tuoyang Zhang
Michael Free
Publikationsdatum
29.12.2016
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 7/2017
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-016-0674-1

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