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Investigation of Phase Transformations and Ordering During Combustion Synthesis

Published online by Cambridge University Press:  21 February 2011

C.R. Kachelmyer ,
A. Varma ,
I.O. Khomenko ,
A.S. Rogachev  and
A.G. Merzhanov
C.R. Kachelmyer
Affiliation:
Department of Chemical Engineering, University of Notre Dame, Notre Dame, IN 46556
A. Varma
Affiliation:
Department of Chemical Engineering, University of Notre Dame, Notre Dame, IN 46556
I.O. Khomenko
Affiliation:
Institute of Structural Macrokinetics, Chernogolovka, 142432 Russia
A.S. Rogachev
Affiliation:
Institute of Structural Macrokinetics, Chernogolovka, 142432 Russia
A.G. Merzhanov
Affiliation:
Institute of Structural Macrokinetics, Chernogolovka, 142432 Russia
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Abstract

Two complementary experimental techniques are presented that describe the mechanisms during the combustion synthesis of NiAl and Ti5Si3. The first involves quenching a reacting wedge-shaped sample imbedded in a copper block where the propagating combustion front extinguishes while traveling to the apex. The second technique, time-resolved X-ray diffraction (TRXRD), provides a direct in-situ observation of the sequence of high temperature phase transformations. The information obtained from this investigation will be useful in developing improved process models of combustion synthesis, which can lead to the production of advanced materials with tailored microstructure and properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 398: Symposium C – Thermodynamics and Kinetics of Phase Transformations , 1995 , 593
Copyright
Copyright © Materials Research Society 1998

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References

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