The Gravimetric Determination Of Tungsten In Uranium Tungsten Alloys
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Analytical Methods for Certain Metals Including Cerium, Thorium, Molybdenum, Tungsten, Radium, Uranium, Vanadium, Titanium and Zirconium
Author | : Richard Bishop Moore |
Publisher | : |
Total Pages | : 350 |
Release | : 1923 |
Genre | : Analytical chemistry |
ISBN | : |
Determination of Iron, Nickel, Copper, and Cobalt in Tungsten and Tungsten Alloys
Author | : George Norwitz |
Publisher | : |
Total Pages | : 8 |
Release | : 1964 |
Genre | : |
ISBN | : |
Iron, nickel, copper, and cobalt in tungsten and tungsten alloys are analyzed spectrophotometrically by taking aliquots of a hydrofluoricnitric acid solution that has been buffered to a pH of 6 by the addition of ammonium tartrate and sodium borate. No subsequent adjustment of pH is necessary for the spectrophotometric determination of the iron, copper, or cobalt. The iron is determined with ortho-phenanthroline, the nickel with dimethylglyoxime (using an ammoniacal medium for trace amounts and an ammoniacal-sodium hydroxide medium for large amounts), the copper with neocuproine, and the cobalt with nitroso-R salt. Large amounts of iron are determined titrimetrically after sodium hydroxide and ammonium hydroxide precipitations. A direct method for the gravimetric determination of large amounts of nickel in tungsten with dimethylglyoxime by use of the ammonium tartrate-sodium fluoborate buffer system is described. Copper is determined electrolytically after dissolution in hydrofluoric and nitric acids and addition of hydrogen peroxide. Large amounts of cobalt are determined potentiometrically with potassium ferricyanide. (Author).
Standard Methods of Chemical Analysis
Author | : Wilfred Welday Scott |
Publisher | : |
Total Pages | : 1390 |
Release | : 1925 |
Genre | : Analytical chemistry |
ISBN | : |
High Strength and Density Tungsten-uranium Alloys
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1993 |
Genre | : |
ISBN | : |
Alloys of tungsten and uranium and a method for making the alloys. The amount of tungsten present in the alloys is from about 55 vol % to about 85 vol %. A porous preform is made by sintering consolidated tungsten powder. The preform is impregnated with molten uranium such that (1) uranium fills the pores of the preform to form uranium in a tungsten matrix or (2) uranium dissolves portions of the preform to form a continuous uranium phase containing tungsten particles.