Masters Theses

Abstract

"The physical properties of chromium and vanadium are so important that a study of their lattice constants and their coefficients of thermal expansion, requires special consideration.

A number of research workers, over a period of about forty years, have done considerable work in determining the above constants. Some of the previous investigators found an anomaly in the thermal expansion, electrical resistivity and other physical properties of chromium. They observed that at about 37°C, chromium showed a discontinuity in the above physical properties. However it is not known what causes the discontinuity in the expansivity curve of chromium. The discontinuity may be due to the dissolved gases in the chromium metal.

So accordingly, a study of nitrogen loaded samples of chromium were studied as to the possibility of nitrogen causing the break in the thermal expansion curve.

The presence of impurities has caused difficulties in the study of the physical properties of another metal, vanadium. Different investigators have determined the lattice parameter of vanadium and their studies resulted in values showing considerable variation. The reason for this variation in the values of lattice parameter for vanadium is usually ascribed to the presence of impurities, e.g. in the form of gases.

This suggested the need for further work to determine the exact lattice parameter and coefficient of thermal expansion of vanadium and to find the reason for the variation in the values of the lattice constant"--Introduction, pages 1-2.

Advisor(s)

James, William Joseph

Committee Member(s)

Straumanis, Martin E., 1898-1973
Strunk, Mailand R., 1919-2008
Johnson, Charles A.

Department(s)

Chemical and Biochemical Engineering

Degree Name

M.S. in Chemical Engineering

Sponsor(s)

National Science Foundation (U.S.)

Publisher

Missouri School of Mines and Metallurgy

Publication Date

1960

Pagination

vi, 72 pages

Note about bibliography

Includes bibliographical references (pages 70-71).

Rights

© 1960 Paluri Bhimeswara Rao, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Crystal lattices -- Mathematical modelsChromiumVanadiumExpansion (Heat) -- Measurement

Thesis Number

T 1281

Print OCLC #

5931562

Electronic OCLC #

959834263

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