Date of Award
Summer 1968
Document Type
Thesis - Restricted
Degree Name
Master of Science (MS)
Department
Electrical Engineering
First Advisor
Blumenthal, Robert N.
Second Advisor
Hirthe, Walter M.
Third Advisor
O'Brien, William J.
Abstract
Several previous Investigators have shown that gold rich Au-Pt alloys containing smalI amounts of iron exhibit an age hardening phenomenon. The change In hardness for these alloys has been reported as a function of composition, aging time, and aging temperature. A rod-shaped lntergranular precipitate has been observed in the aged alloys. Also, It is possible that an intragranular precipitate is formed. In this investigation, neutron diffraction and electron microprobe analysis were employed to determine the composition of the intergranular precipitate. The kinetics of precipitation in these alloys were followed using electrical resistance measurements as a function of alloy composition, aging time, and aging temperature. An empirical rate equation was employed to determine the rate Iimiting process occuring in these alloys and an empirical activation energy was obtained.
Recommended Citation
Sims, Julius R. Jr., "Electrical Resistance Study of the Aging Kinetics of a 90 wt.% Gold - 10 wt.% Plating Alloy with Small Additions of Iron" (1968). Master's Theses (1922-2009) Access restricted to Marquette Campus. 4191.
https://epublications.marquette.edu/theses/4191