phase diagrams, alloy system, temperature, pressure
The solid–liquid phase diagrams were investigated to 60 kbar for elemental sodium, potassium, and various sodium–potassium alloys. The data for Na and K are in general agreement with those of earlier workers. In the alloy system the temperatures of both the peritectic and eutectic halts increase as the pressure increases, but with different slopes, so that the two invariant points merge at approximately 35 kbar. Above this pressure, two halts are again observed. One increases with increasing pressure, and the other decreases with increasing pressure up to 55 kbar, where it abruptly starts increasing again. Melting points for samples in the 0.6–0.8 mole fraction potassium range indicate that an NaK2 intermetallic compound may form at high pressures.
Original Publication Citation
Anderson, Ray D., Bevan J. Ott, Rex J. Goates, and Jr."High-Pressure Phase Studies on Sodium-Potassium Alloys." The Journal of Chemical Physics 54 (1971): 234-238.
BYU ScholarsArchive Citation
Anderson, D. Ray; Ott, J. Bevan; Goates, Rex J.; and Hall, H. Tracy, "High-Pressure Phase Studies on Sodium–Potassium Alloys" (1971). All Faculty Publications. 795.
Physical and Mathematical Sciences
Chemistry and Biochemistry
© 1971 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in The Journal of Chemical Physics and may be found at http://link.aip.org/link/?JCPSA6/54/234/1
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