Masters Theses
Abstract
"For the determination of the precise lattice constants of Ti₂O₃, it is very important to use a Ti₂O₃ as pure as possible.
Due to the formation of solid solution with titanium or oxygen, ranging from 32.5 to. 34.5% O₂ by weight in the Ti-O binary system, it is very difficult to get a pure Ti₂O₃ (33.8% O₂ by weight) in the laboratory.
To determine the precise lattice constants of pure Ti₂O₃, therefore, the extrapolation method was used.
This method computes the respective constants for pure Ti₂O₃ from the values obtained With Ti₂O₃-Ti solid solutions by extrapolation. To carry out such an investigation on Ti₂O₃ the determinations as the following had to be made:
1) Determination of the exact lattice parameters of a substance having a composition close to Ti₂O₃.
2) Determination of the coefficients of thermal expansion (linear and volume expansion coefficients of the hexagonal and the rhombohedral unit cell, expansion coefficient of the axial ratio of the hexagonal unit cell, and interaxial angle expansion coefficient of the rhombohedral unit cell.)
3) Establishment of the change of the same parameters with small change in composition of the Ti₂O₃ -Ti solid solution.
4) Determination of the experimental densities and the molecular weights of Ti₂O₃-Ti solid solutions.
These determinations would allow one:
5) To make conclusions concerning the perfection of Ti₂O₃-Ti solid solution and
6) To determine the parameters of pure Ti₂O₃.
For the evaluation of soundness of the crystal lattice of Ti₂O₃, experimental macroscopic densities of the samples used had to be determined"--Introduction, pages 1-2.
Advisor(s)
Straumanis, Martin E., 1898-1973
Department(s)
Materials Science and Engineering
Degree Name
M.S. in Metallurgical Engineering
Publisher
Missouri School of Mines and Metallurgy
Publication Date
1957
Pagination
vii, 57 pages, Appendix 17 pages
Note about bibliography
Includes bibliographical references (Appendix pages 14-16).
Rights
© 1957 Tatsuhiko Ejima, All rights reserved.
Document Type
Thesis - Open Access
File Type
text
Language
English
Subject Headings
Titanium alloys -- Thermal properties
Titanium -- Thermal properties
Titanium alloys -- Metallurgy
Crystal lattices
Thesis Number
T 1140
Print OCLC #
5922773
Electronic OCLC #
946040463
Link to Catalog Record
Recommended Citation
Ejima, Tatsuhiko, "Determination of lattice constants, and thermal expansion coefficients of Ti₂O₃ and of its solid solutions with Ti" (1957). Masters Theses. 2562.
https://scholarsmine.mst.edu/masters_theses/2562
