Masters Theses
Abstract
"The solubility of zinc in solid iron was determined by a static equilibrium method using two different types of equipment. The first apparatus used a sealed and evacuated fused silica capsule, with the zinc and iron at opposite ends of the capsule. The second apparatus used two vertical mullite or alumina tubes. One tube was partly inside the other with the zinc located on top of the inner tube. In both techniques, the temperature of the zinc fixed the partial pressure of zinc in the system.
The solubility of zinc in solid iron was determined in the temperature range from 1273 K to 1673 K. The zinc vapor pressure was varied from 0.65 to 1.5 atm. The majority of the experiments were run in the austenite region of the iron-zinc phase diagram. The remaining experiments were done in the lower and delta ferrite regions. The activities and activity coefficients of zinc were determined directly from the zinc content in the iron samples, and the zinc vapor pressure, and then compared with published zinc solubility data.
The results indicate that above an iron temperature of about 1200°C and below a PZn of about 1 atm there is a linear relationship between zinc vapor pressure and zinc content. Therefore, for these conditions, zinc closely approximates Henry's law. The results also indicate that there is little difference between the activity coefficient of zinc in alpha and gamma iron. The segregation coefficient of zinc between liquid iron and delta ferrite iron was estimated to be between 1.55 and 2.33, depending on the data used"--Abstract, page iii.
Advisor(s)
Morris, Arthur E., 1935-
Committee Member(s)
Robertson, D. G. C.
O'Keefe, T. J. (Thomas J.)
Frank, Ronald L.
Department(s)
Materials Science and Engineering
Degree Name
M.S. in Metallurgical Engineering
Sponsor(s)
Generic Mineral Technology Center for Pyrometallurgy (U.S.)
Publisher
University of Missouri--Rolla
Publication Date
Summer 1991
Pagination
ix, 68 pages
Note about bibliography
Includes bibliographical references (pages 66-67).
Rights
© 1991 Martin E. Myers, All rights reserved.
Document Type
Thesis - Restricted Access
File Type
text
Language
English
Subject Headings
Zinc -- Solubility
Thermodynamics
Austenite
Thesis Number
T 6262
Print OCLC #
25046024
Electronic OCLC #
905228003
Link to Catalog Record
Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.
http://merlin.lib.umsystem.edu/record=b2350740~S5Recommended Citation
Myers, Martin E., "Zinc solubility in solid iron" (1991). Masters Theses. 994.
https://scholarsmine.mst.edu/masters_theses/994
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