Masters Theses

Title

A parametric and microscopic study of the solid solubility of gold in aluminum

Abstract

"Determinations of lattice constants at room temperature of aluminum gold alloys in the solid solution region have failed to confirm the solid solubility limit of gold in aluminum at 642° C, according to Ageew and Ageewa. Instead a minimum value (a25° = 4.04955 A) of the lattice parameter was detected at 0.50 weight percent gold. The coefficient of thermal expansion of an aluminum gold alloy shows the influence of gold in decreasing the coefficient below the value for pure aluminum. The lattice constant for high purity aluminum (a25° = 4.04965 A) agrees well with values reported for aluminum of the same purity.

The high stability of AI2Au compound is verified by front reflection lines in x-ray diffraction films of alloys with as low as 0.50 weight percent gold content.

The shape, either globular or lamellar, of the Al2Au compound in the eutectic depends on the previous heat treatment of the sample.

The solid solubility of gold in aluminum at 642° C was determined by microstructure studies to be more than 0.50 but less than 0.75 weight percent gold"--Abstract, page ii.

Advisor(s)

Straumanis, Martin E., 1898-1973

Committee Member(s)

Larson, Andrew H.
Planje, Theodore J., 1919-1980
Lorey, G. Edwin

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Metallurgical Engineering

Publisher

Missouri School of Mines and Metallurgy

Publication Date

1961

Pagination

viii, 70 pages

Note about bibliography

Includes bibliographical references (pages 68-69).

Rights

© 1961 Claude Lowell Woodard, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Library of Congress Subject Headings

Gold alloys -- Thermal properties
Gold alloys -- Metallurgy
Crystal lattices
Expansion (Heat) -- Measurement

Thesis Number

T 1343

Print OCLC #

5933650

Electronic OCLC #

982298100

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