Author： Taova T. Mal’surgenova F. Alchagirov B. Khokonov Kh.
Publisher： Springer Publishing Company
ISSN： 0018-151X
Source： High Temperature, Vol.47, Iss.6, 2009-12, pp. : 815-821
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Abstract
The density of well over 130 liquid ternary alloys of the Na-K-Cs system along the cross sections extending towards the vertexes of potassium, cesium, and sodium of the triangle of compositions is determined experimentally and by a numerical-and-graphic method. The pycnometric method is used for measuring the density in the temperature range from liquidus temperature to 553 K. The relative experimental error is 0.10% at confidence probability of 95%. The polytherms of density and molar volumes of the alloys are described by linear equations. In so doing, the isotherms of density of cesium-“rich” ternary alloys exhibit positive deviations, and the isotherms of molar volumes exhibit minor negative deviations from additivity, which are indicative of the nonideality of the solutions of the Na-K-Cs system.
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