Abstract
The Bureau of Mines has produced ductile zirconium dendrites at 800°C in an electrolyte containing NaCl-NaF-ZrCl4. Sublimed zirconium tetrachloride was fed into NaCl containing a slight excess of NaF above that required to complex 2 pct Zr as Na2ZrF6. The chlorine gas generated at the graphite anode during electrolysis was confined in and vented out of the cell through a high-density graphite tube into a scrubbing solution of NaOH. At a cathode current density of 300 amp per sq ft, the zirconium metal produced was 95 pct +200 mesh size. The average anode and cathode current efficiencies were 86 and 96 pct. The metal product in the form of arc-melted buttons has a hardness ranging from 130 to 170 Bhn and can be cold-rolled into 15-mil thick strips without intermediate annealing.
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M. A. Steinberg, M. E. Siebert, and E. Wainer:Zirconium and Zirconium Alloys, pp. 37–72, Amer. Soc. Metals, Cleveland, Ohio, 1953.
M. A. Steinberg, M. E. Siebert, and E. Wainer:J. Electrochem Soc, 1954, vol. 101, pp. 63–78.
B. C. Raynes, E. L. Thellmann, M. A. Steinberg, and E. Wainer:J. Electrochem. Soc, 1955, vol. 102, pp. 137–44.
G. W. Mellors and S. Senderoff:J. Electrochem, Soc, 1966, vol. 113 no. 1, pp. 60–66.
D. H. Baker, Jr., J. R. Nettle, and H. Knudsen:U.S. Bur. Mines, Rep. Invest. 5758, 1961, pp. 1–12.
B. Swaroop and S. N. Flengas:Can. J. Chem, 1964, vol. 42, no. 5, pp. 1495–97.
B. Swaroop and S. N. Flengas:Can. J. Chem., 1965, vol. 43, no. 7, pp. 2115–17.
G. M. Martinez, M. M. Wong, and D. E. Couch:Trans. TMS-AIME, 1969, vol. 245, pp. 2237–42.
D. R. Spink:Trans. TMS-AIME, 1962, vol. 224, pp. 965–70.
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Martinez, G.M., Couch, D.E. Electrowinning of zirconium from zirconium tetrachloride. Metall Trans 3, 575–578 (1972). https://doi.org/10.1007/BF02642064
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DOI: https://doi.org/10.1007/BF02642064