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It has been found that titanium dispersed in fused salts can be deposited on other metals, especially on copper and iron. l%r example, if a piece of copper sheet is placed in close proximity to a titanium sheet (but not in actual contact) and then the whole is immersed into a fused salt, preferably NaC1 or KC1, titanium will transfer to the copper sheet. The thickness of the titanium layer on the copper increases with temperature and time, approaching a maximum thickness of 0.001-0.007 in. (0.025-0.178 mm). Titanium forms a coherent layer on the metals mentioned and protects them from corrosion. The substrate can be dissolved from the reverse side (Fe in FeC13, Cu in HNO3) ; the titanium coating remains.The mechanism of titanium transfer is thought to consist of, first, a titanium pyrosol formation, and then the deposition of these titanium particles upon the other metals forming a titanium rich alloy. Similar behavior has been observed for other metals.

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Titanium was severely attacked when immersed in a molten alkali chloride bath in the presence of air. The most severe eorrosion of this metal was observed in molten NaC1-NaF mixtures; samples disintegrated completely at temperatures of 850~ in less than 3 hr. Progressively less corrosion occurred in KC1, NaC1, and LiC1 melts. In many eases, salt fumes were more corrosive than the molten salt itself, evid~htly because of the better access of oxygen to the titanium surface. The corrosion rate fluctuated greatly from test to test but was very low in experiments performed in vaeuum.The chief corrosion products were a dispersion of metallic titanium in the molten salt ("pyrosols"), mixed with some titanium oxides. The mixture was dark gray, and colored the solid salt bluish-black. White to yellowish oxides appeared in small amounts on the surface of the salt bath and consisted mainly of TiO~.