Masters Theses
Abstract
"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.
Advisor(s)
Johnson, James W., 1930-2002
Committee Member(s)
James, William Joseph
O'Keefe, T. J. (Thomas J.)
Department(s)
Chemical and Biochemical Engineering
Degree Name
M.S. in Chemical Engineering
Publisher
University of Missouri--Rolla
Publication Date
1970
Pagination
vi, 39 pages
Note about bibliography
Includes bibliographical references (pages 60-61).
Rights
© 1970 Ching-Lun Wu, All rights reserved.
Document Type
Thesis - Open Access
File Type
text
Language
English
Subject Headings
Tungsten -- Anodic oxidation
Faraday effect
Electrolytic oxidation
Thesis Number
T 2509
Print OCLC #
6029609
Electronic OCLC #
871717566
Link to Catalog Record
Recommended Citation
Wu, Ching-lun, "The anodic dissolution of tungsten" (1970). Masters Theses. 5471.
https://scholarsmine.mst.edu/masters_theses/5471
