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Preparation of Ductile Zirconium: Summary of Thermodynamic Data

Description: Abstract: A summary of thermodynamic calculations for zirconium halides is given. Data indicates that the iodide is the most promising of the halides for arc dissociation and that good recoveries of zirconium should be obtainable provided dissociation is carried out at reduced pressure.
Date: September 16, 1949
Creator: Findlay, G. R.
Partner: UNT Libraries Government Documents Department

Investigations of Zirconium with Especial Reference to the Metal and Oxide: Historical Review and Bibliography

Description: From introduction: "As it necessary to begin with a historical review of the literature, such a review is given as Part I of this report, and a bibliography is included as Part IV. References to the numbered items in this bibliography are made throughout the text, the usual footnote reference being omitted. Analyses of the products and conclusions as their purity are given under the descriptions of methods of preparation. A table showing the properties amorphous metal, and another showing the properties of the coherent metal, will be found under appropriate headings in Part II."
Date: 1921
Creator: Marden, J. W. & Rich, M. N.
Partner: UNT Libraries Government Documents Department

The Uranium-Zirconium (Binary System) : Metallurgy Division Final Report

Description: This report follows the investigation of the uranium-zirconium system reported that was limited to the alloys which could be prepared by melting in beryllia with induction heating. A diagram is presented for the section between 0 and 43 atomic percent zirconium.
Date: 1952
Creator: Buzzard, Robert Walton; Liss, Robert B. & Fickle, D. P.
Partner: UNT Libraries Government Documents Department

Zirconium Purification Pilot Plant

Description: This report discusses the process of zirconium purification, providing an alternate method for converting ZrCl4 solution to the oxide in order to free it from small amounts of hafnium impurity that are naturally present.
Date: September 12, 1950
Creator: Lea, D. C.; Aykanian, A. A.; Abbanat, R. G. & Bowman, W. H.
Partner: UNT Libraries Government Documents Department

Zirconium Research and Development : Progress Report

Description: From introduction: "This is the ninth monthly report, BMI-514, under Contract No. AT(30-1)-771 on "Zirconium Research and Development". The report covers the work period from September 15, 1950, to October 15, 1950. Work is continuing on the preparation of large-diameter zirconium crystal bars in the 16-inch-diameter de Boer unit. Crystal bars up to 1-5/16 inches in diameter and 8 feet long have been prepared in this unit."
Date: October 15, 1950
Creator: Bulkowski, H. H.; Sebenick, J. J.; Campbell, Ivor E. & Gonser, B. W.
Partner: UNT Libraries Government Documents Department

Recovery of Zirconium Tetrachloride Powder

Description: Report discussing methods for recovering hafnium-free zirconium from irradiated fuel elements. Two methods are discussed: the fluoride method and the Zircex method. Experimental procedures to evaluate these methods and their results are presented.
Date: April 6, 1956
Creator: Lee, L. A. & Welt, M. A.
Partner: UNT Libraries Government Documents Department

Observations on the Behavior of Hydrogen in Zirconium

Description: Abstract: "Some embrittling effects noted in Zr have been explained by the presence of hydrogen. This phenomenon was initially correlated with the existence of a second phase in the microstructure. The amount of this phase is reduced by vacuum annealing and shows a direct correlation with the hydrogen content of the specimen. X-ray and electron-diffraction evidence identifies the phase as ZrH. Observations are given on the solubilities, diffusion rates and equilibrium pressures of hydrogen in zirconium, and the application of these data to the removal of hydrogen."
Date: February 3, 1953
Creator: Schwartz, C. M. & Mallett, Manley William
Partner: UNT Libraries Government Documents Department

Data on the Hafnium Dioxide Content and the Ratio of Hafnium to Zirconium in Minerals and Rocks

Description: Abstract: "All published data on the hafnium content and hafnium/zirconium ratio in minerals and rocks have been compiled." Information regarding hafnium and zirconium content and the ratio Hf/Zr in the earth's crust and in rocks as well as of minerals is included.
Date: March 1954
Creator: Fleischer, Michael
Partner: UNT Libraries Government Documents Department

Extraction of Zirconium and Hafnium with Various Fluorinated [beta]-Diketones

Description: Abstract: "The distribution ratios and equilibrium constants for the extraction of zirconium and hafnium from 4 M perchloric acid with various combinations of fluorinated [beta]-diketones and organic solvents have been determined. The separation factors K'Zr/K'HF, found for this acidity were: Z-thenoyltrifluoroacetone in benzene, 25; Z-thenoyltrifluoroacetone in o-dichlorobenzene, 16; benzoyltrifluoroacetone in benzene, 18; isovaleroyltrifluoroacetone in benzene, 13; isovaleroyltrifluoroacetone in n-hexane, 13."
Date: April 5, 1954
Creator: Huffman, E. H.; Iddings, G. M; Osborne, R. N. & Shalimoff, G. V.
Partner: UNT Libraries Government Documents Department

EURATOM PROGRAM "Improved Zirconium Alloys"

Description: Introduction: "This report is an expanded version of the regular monthly letter report and is prepared in this form with the intention of reviewing work on the subject program for Euratom technical personnel. Work performed during the month of September, which normally constitutes the entire letter report, has been condensed under one heading."
Date: October 5, 1960
Creator: Weinstein, Daniel. & Van Thyne, R. J.
Partner: UNT Libraries Government Documents Department

Hydrogen Embrittlement of Zirconium

Description: Abstract: "The amount of hydrogen normally present in zirconium and zirconium alloys suffices to reduce their ductility greatly in an impact test at room temperature, after slow cooling from 600 F. Quenching from 600 F or above gives high impact strength, as does removal of hydrogen by high-temperature vacuum annealing. This report discusses the evidence on hydrogen embrittlement, the diffusion, solid solubility, and equilibrium pressure of hydrogen of hydrogen in zirconium, the microstructure, and the effects of hydrogen and heat treatment on the mechanical properties of zirconium."
Date: August 22, 1952
Creator: Dayton, Russell Wendt; Schwope, A. D.; Muehlenkamp, G. T.; Saller, Henry A.; Dickerson, R. F.; Schwartz, C. M. et al.
Partner: UNT Libraries Government Documents Department