Citation
Bergman, B. Gunnar (1951) I. A Structural Investigation of the Mercury-Tin System. II. The Determination of the Crystal Structure of the Sigma Phase by Application of X-Ray Diffraction Methods to This Phase in the Iron-Chromium and Iron-Molybdenum Systems. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/1gn8-2a14. https://resolver.caltech.edu/CaltechTHESIS:10312023-190750018
Abstract
A study of the mercury-tin system has been made by the application of thermal analysis and x-ray powder methods in order to determine whether four hypothetical intermetallic compounds of the compositions HgSn₃₅, HgSn₁₇, HgSn₁₁ and HgSn₈ proposed by Professor Linus Pauling, exist. The thermal analysis did not indicate the presence of these compounds in equilibrium with the liquid phase. By x-ray powder methods the occurrence of only two different phases was established, one of tetragonal structure and identical with that of white tin, and one of simple hexagonal structure as has been reported by previous workers. The four intermetallic compounds proposed by Professor Pauling do not seem to exist.
The structure of the sigma phase in the iron-chromium system at 46.5 at. % chromium content has been successfully determined by the application of x-ray diffraction methods. The structure is of a type that has not been observed earlier in intermetallic compounds.
The structure of the sigma phase in the iron-molybdenum system has also been investigated briefly and found to be of the same type as the iron-chromium sigma structure.
Item Type: | Thesis (Dissertation (Ph.D.)) |
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Subject Keywords: | (Chemistry and Physics) |
Degree Grantor: | California Institute of Technology |
Division: | Chemistry and Chemical Engineering |
Major Option: | Chemistry |
Minor Option: | Physics |
Thesis Availability: | Public (worldwide access) |
Research Advisor(s): |
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Thesis Committee: |
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Defense Date: | 0151 |
Record Number: | CaltechTHESIS:10312023-190750018 |
Persistent URL: | https://resolver.caltech.edu/CaltechTHESIS:10312023-190750018 |
DOI: | 10.7907/1gn8-2a14 |
Default Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
ID Code: | 16225 |
Collection: | CaltechTHESIS |
Deposited By: | Kathy Johnson |
Deposited On: | 31 Oct 2023 19:17 |
Last Modified: | 31 Oct 2023 19:18 |
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