TY - JOUR
T1 - Phase chemistry in the Ti-Si-N system
T2 - Thermochemical review with phase stability diagrams
AU - Sambisivan, S.
AU - Petuskey, William
N1 - Funding Information:
The authors express their appreciation to Professor S.B. Desu of the Virginia Polytechnic Institute, with whom discussions indicated the need for this work. The United States Army Research Office is gratefully acknowledged for financial support under Grant No. DAAL 0388K0098.
PY - 1994/9
Y1 - 1994/9
N2 - The phase chemistry and thermodynamics of the Ti-Si-N system are reviewed leading to a revision of the ternary phase diagram at 1273 K to include the extended compositional ranges of S-TiN8 and Ti5Si3(Ny) and the compounds TSi, Ti5Si4, and a:-Ti. This same information is presented in the form of phase stability diagrams which plot the stability criteria for each phase as a function of thermodynamic activity of one component and the relative composition of the other two components. Plots in terms of log #si vs Ti/(Ti + N), log aN2 vs Si/(Ti + Si), and log an vs N/(Si + N) were constructed. All diagrams are consistent with current knowledge of phase compatibility and, therefore, are topologically correct. Further refinement will be possible as more accurate information on thermodynamics and compositional limits of solid solutions becomes available.
AB - The phase chemistry and thermodynamics of the Ti-Si-N system are reviewed leading to a revision of the ternary phase diagram at 1273 K to include the extended compositional ranges of S-TiN8 and Ti5Si3(Ny) and the compounds TSi, Ti5Si4, and a:-Ti. This same information is presented in the form of phase stability diagrams which plot the stability criteria for each phase as a function of thermodynamic activity of one component and the relative composition of the other two components. Plots in terms of log #si vs Ti/(Ti + N), log aN2 vs Si/(Ti + Si), and log an vs N/(Si + N) were constructed. All diagrams are consistent with current knowledge of phase compatibility and, therefore, are topologically correct. Further refinement will be possible as more accurate information on thermodynamics and compositional limits of solid solutions becomes available.
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U2 - 10.1557/JMR.1994.2362
DO - 10.1557/JMR.1994.2362
M3 - Article
AN - SCOPUS:84971896351
SN - 0884-2914
VL - 9
SP - 2362
EP - 2369
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 9
ER -