DISSOLUTION OF ZIRCONIUM AND ZIRCALOY-2 IN NITRIC-HYDROFLUORIC ACID MIXTURES AT REFLUX TEMPERATURES

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BS>The initial rate constants were obtained for zirconium and Zircaloy-2 dissolution at reflux temperatures in nltric--hydrofluoric acid mlxtures. Variation of the nitric acid concentration in these solutions had very little effect on the initial dissolution rate, except for the change in the reflux temperature. The nitric acid concentration exhibited an appreciable effect on the average dissolution rate over longer periods of time. An empirical treatment of the rates over extended periods is presented. The maximum attainable rates for zirconium dissolution, adjusted to an initial lM hydrofluoric acid concentration, were determined at lower temperatures. Stability of resultant Zircaloy-2 dissolver solutions is ... continued below

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Pages: 29

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Vander Wall, E.M. & Whitener, E.M.f Bauer, D.L. September 1, 1959.

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BS>The initial rate constants were obtained for zirconium and Zircaloy-2 dissolution at reflux temperatures in nltric--hydrofluoric acid mlxtures. Variation of the nitric acid concentration in these solutions had very little effect on the initial dissolution rate, except for the change in the reflux temperature. The nitric acid concentration exhibited an appreciable effect on the average dissolution rate over longer periods of time. An empirical treatment of the rates over extended periods is presented. The maximum attainable rates for zirconium dissolution, adjusted to an initial lM hydrofluoric acid concentration, were determined at lower temperatures. Stability of resultant Zircaloy-2 dissolver solutions is reported for both nitric--hydrofluoric acid mixtures and nitric--oxalic--hydrofluoric acid mixtures. Possible reactions and some analyses of off-gases from these dissolutions are given. (auth)

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Pages: 29

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  • Other Information: Orig. Receipt Date: 31-DEC-60

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  • Report No.: IDO-14497
  • Grant Number: AT(10-1)-205
  • DOI: 10.2172/4172373 | External Link
  • Office of Scientific & Technical Information Report Number: 4172373
  • Archival Resource Key: ark:/67531/metadc865299

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  • September 1, 1959

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  • Sept. 16, 2016, 12:32 a.m.

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  • Feb. 17, 2017, 7:09 p.m.

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Vander Wall, E.M. & Whitener, E.M.f Bauer, D.L. DISSOLUTION OF ZIRCONIUM AND ZIRCALOY-2 IN NITRIC-HYDROFLUORIC ACID MIXTURES AT REFLUX TEMPERATURES, report, September 1, 1959; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc865299/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.