"The anodic dissolution of tungsten was studied in H₂SO₄-K₂SO₄ solutions (pH= -2 to 2.5) andK₂SO₄-K₂CO₃-KOH solutions (pH = 11.5 to 14.5) at 25ºC. Faradaic efficiency studies in basic solutions showed that the metal was oxidized to the +6 state. In acid solutions, a thick protective film of yellow WO₃ was formed. Polarization measurements showed linear Tafel behavior (slope ~ 2.3RT/F) in the potential region slightly more positive than the rest potentials. An anodic dissolution mechanism is proposed which involves a surface film of W₂O₅ that is further oxidized to WO₃ and dissolves by hydrolyzation"--Abstract, page 1.
Johnson, James W., 1930-2002
James, William Joseph
O'Keefe, T. J. (Thomas J.)
Chemical and Biochemical Engineering
M.S. in Chemical Engineering
University of Missouri--Rolla
vi, 39 pages
© 1970 Ching-Lun Wu, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Tungsten -- Anodic oxidation
Print OCLC #
Electronic OCLC #
Link to Catalog Recordhttp://laurel.lso.missouri.edu/record=b1066653~S5
Wu, Ching-lun, "The anodic dissolution of tungsten" (1970). Masters Theses. 5471.