ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Corrosion of titanium diboride in molten FLiNaK(eut)
Viliam Pavlík and Miroslav Boča
Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 36 Bratislava, Slovakia
Abstract: Pure and enriched titanium dibromide (TiB2) samples (prepared by hot isostatic pressing) with different mole ratios of Ni and Ta were investigated in contact with molten
eutectic salt (FLiNaK(eut); LiF/NaF/KF 42.5 mole %: 11.5 mole %: 42.0 mole %) at 600°C. Corrosion resistance of the materials was studied, the mass
losses and depths of corrosion were calculated, and sample surfaces were investigated by scanning electron microscopy-energy
dispersive X-ray spectroscopy (SEM-EDX). Nickel addition decreased the corrosion resistance of TiB2. Simultaneous additions of both elements, Ni and Ta, as well as the addition of Ta only showed reducing effect on grain formation
and they increased the corrosion resistance which is highest in the last case.
Keywords: molten salts – titanium diboride – corrosion – nickel addition – tantalum addition
Full paper is available at www.springerlink.com.
Chemical Papers 66 (11) 1073–1077 (2012)