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Determination of Systems Suitable for Study as Monotectic Binary Metallic Alloy Solidification ModelsSuccinonitrile-water and diethylene glycol-ethyl salicylate are two transparent systems which have been studied as monotectic binary metallic alloy solidification models. Being transparent, these systems allow for the direct observations of phase transformations and solidification reactions. The objective was to develop a screening technique to find systems of interest and then experimentally measure those systems. The succinonitrile-water system was used to check the procedures. To simulate the phase diagram of the system, two computer programs which determine solid-liquid and liquid-liquid equilibria were obtained. These programs use the UNIFAC method to determine activity coefficients and together with several other programs were used to predict the phase diagram. An experimental apparatus was developed and the succinonitrile-water phase diagram measured. The diagram was compared to both the simulation and literature data. Substantial differences were found in the comparisons which serve to demonstrate the need for this procedure.
Document ID
19840007982
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Smith, J. E., Jr.
(Alabama Univ. Huntsville, AL, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1983
Publication Information
Publication: Res. Rept.: 1983 NASA(ASEE Summer Faculty Fellowship Program
Subject Category
Metallic Materials
Accession Number
84N16050
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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