The Resource A dissolution rate study in hydrofluoric acid of titanium and the alpha solid solutions of oxygen in titanium, by John Leigh Ratliff

A dissolution rate study in hydrofluoric acid of titanium and the alpha solid solutions of oxygen in titanium, by John Leigh Ratliff

Label
A dissolution rate study in hydrofluoric acid of titanium and the alpha solid solutions of oxygen in titanium
Title
A dissolution rate study in hydrofluoric acid of titanium and the alpha solid solutions of oxygen in titanium
Statement of responsibility
by John Leigh Ratliff
Creator
Author
Subject
Language
eng
Summary
"The dissolution mechanism of titanium in hydrofluoric acid was studied by collecting the hydrogen evolved during the dissolution reaction. A concentration range of 0.05 N to 0.50 N and a temperature range of 15°C to 45°C were employed for the determination. Values of the reaction order and energy of activation were determined for both pure titanium and the alpha solid solutions of oxygen in titanium and found to be the same within experimental limits. This indicated that the reaction giving rise to hydrogen evolution on the surfaces of both pure titanium and the TiO[subscript x] alloys was the same. The order of the reaction was approximately (3/4) and the activation energy was 6.9+̲0.7 kcal/mole. These measurements were shown to be indicative of a diffusionally controlled process. The reaction involved the penetration and attack or removal of a sub-oxide layer with subsequent mass transfer of HF[subscript un] to the surface and direct chemical attack. Difference effect measurements made on some TiO[subscript x] alloys indicated that an electrochemical reaction was also occurring on the surface. The large value of the difference effect constant, 9.5, indicated that a secondary process was affecting the surface of the TiO[subscript x] alloys so as to render them more than 100% polarizable as predicted by an equation published in previous literature. The reaction mechanism proposed from this study was the penetration and/or removal of a sub-oxide film on the surface of the titanium with subsequent direct chemical attack. Diffusionally controlled chemical and electrochemical dissolution processes were thought to be occurring simultaneously on the surface"--Introduction, pages ii-iii
Member of
Cataloging source
UMR
http://library.link/vocab/creatorDate
1936-
http://library.link/vocab/creatorName
Ratliff, John L.
Degree
M.S.
Dissertation year
1960.
Funding information
Funded by U. S. Atomic Energy Commission
Granting institution
University of Missouri. School of Mines and Metallurgy
Illustrations
  • illustrations
  • photographs
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
  • theses
http://library.link/vocab/subjectName
  • Titanium
  • Corrosion and anti-corrosives
  • Hydrofluoric acid
Label
A dissolution rate study in hydrofluoric acid of titanium and the alpha solid solutions of oxygen in titanium, by John Leigh Ratliff
Instantiates
Publication
Note
Vita
Bibliography note
Includes bibliographical references (page 138)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
959421588
Extent
1 online resource (xi, 139 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations, photographs.
Specific material designation
remote
System control number
(OCoLC)959421588
Label
A dissolution rate study in hydrofluoric acid of titanium and the alpha solid solutions of oxygen in titanium, by John Leigh Ratliff
Publication
Note
Vita
Bibliography note
Includes bibliographical references (page 138)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
959421588
Extent
1 online resource (xi, 139 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations, photographs.
Specific material designation
remote
System control number
(OCoLC)959421588

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