On the other hand, many materials in use today are comprised of several deliberately alloyed constituents to achieve desired mechanical and physical properties. For almost 20 years, members of SGTE have been working together to try to overcome some of these problems by together producing self-consistent and compatible thermodynamic datasets, not only for pure inorganic substances, but also for mixtures of substances in the form of alloys, slags, salt systems, aqueous solutions, etc. The possibility to continue to ternary and multicomponent systems is also forseen. The fundamental equations used in evaluating the data are given in the introduction to the volumes and the models used in representing the data are described. Each book is accompanied by a diskette allowing computer tabulation of any required function at any temperature, or for selected temperature ranges, for the substances or systems in that volume.
Graphical representations are also possible, including phase diagrams for the systems.
Information on more comprehensive software, allowing complex equilibrium calculations involving not only pure substances, but also solution phases of different types, can be obtained from SGTE members. A list of the SGTE membership is presented in the cover pages of this Volume. In presenting the data in this Series, SGTE would like to give sincere acknowledgement to the contributions of a number of scientists whose efforts have been invaluable in establishing the present SGTE databases. Dr. T.I. Barry, Dr. T.G. Chart and Dr. G.P. Jones.