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Interaction of Single-Crystalline Metal Fluorides with Titanium-Containing Melts

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Powder Metallurgy and Metal Ceramics Aims and scope

The wetting of solid titanium substrates with liquid lithium and magnesium fluorides was studied by the sessile drop method in 1 · 10–3 Pa vacuum at 1173 and 1553 K, respectively. Titanium and fluorine were found to actively interact in the systems to change the titanium substrate surface profile, leading to a ‘crater’ in the contact area. The ‘solid titanium–liquid magnesium fluoride’ interfacial geometry was examined and confirmed the potential to form gaseous products in the titanium–fluorine interaction. Such gaseous compounds prevent the wetting of alkaline-earth metal fluorides with titanium-containing melts at temperatures above 1400 K. This allows the materials made of alkaline-earth metal fluorides to be used as refractories for high-temperature melting, longterm homogenization, and casting of alloys with a high content of Ti, Zr, Hf, Nb, and V.

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  1. Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kyiv, Ukraine

    V.P. Krasovskyy

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  1. V.P. Krasovskyy
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Correspondence to V.P. Krasovskyy.

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Translated from Poroshkova Metallurgiya, Vol. 58, Nos. 5–6 (527), pp. 111–119, 2019.

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Krasovskyy, V. Interaction of Single-Crystalline Metal Fluorides with Titanium-Containing Melts. Powder Metall Met Ceram 58, 334–340 (2019). https://doi.org/10.1007/s11106-019-00083-y

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  • DOI: https://doi.org/10.1007/s11106-019-00083-y

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