Recent Developments in Titanium

Abstract

Titanium is assuming increasing importance as a potentially valuable material of construction. Relatively light, with good strength and attractive corrosion resistance, it may some day fill the present structural gap between aluminum and alloy steel. New techniques for consolidation, fabrication, and utilization are being developed, although many difficult problems remain to be solved. The large number of laboratories directing their resources toward its exploitation insures an increasing supply of data for evaluation with regard to our present metal use pattern.

The Mechanism and Rate of Dissolution of Titanium in Hydrofluoric Acid

“…The titanium samples may not have the purity claimed. The presence of impurities could even be observed in the first two samples of Table I: some black residue always remained after the dissolving of titanium, most likely consisting of carbon according to the literature (3,4). The fluctuations of results in different runs (Table I) can be explained well by the variation in purity of separate samples.…”

“…Three kinds of titanium were used for this study: titanium I, obtained from Remington Arms in form of a rolled sheet 1.5 mm thick (nominal purity over 99 per cent); titanium II, received from the Bureau of Mines as a sheet 1 mm thick, sintered from sponge by the Bureau (over 99.1 per cent); and titanium III, obtained from Battelle Memorial Institute in form of a rod 1.5 cm in diameter, made by the iodide process (over 99.9 per cent). The purity is given according to the data of current literature (3,4).…”