STRUCTURE AND PHASE FORMATION OF COMBUSTION PRODUCTS DURING Γ-ALON SYNTHESIS IN SHS GAS-STATTING MODE
https://doi.org/10.17073/1997-308X-2016-3-23-30
Abstract
The paper studies synthesis of aluminum oxynitride (γ-AlON) under the conditions of SHS gas-statting at high pressures (10–100 MPa) of gaseous nitrogen including the mode of so-called conjoint combustion reactions (chemical furnaces). It was shown that chemical and phase compositions of combustion products, their structure and morphology of powder particles depend on the reagent ratio in the initial Al–Al2O3 mixture, as well as nitrogen pressure, combustion temperature of high-exothermic components of chemical furnaces, and type of initial reagents. The structure of γ-AlON powder particles was studied and its relation to self-propagating high-temperature synthesis conditions was found. It determines the optimum SHS parameters for Al5O6N (γ-AlON) synthesis.
About the Authors
I. P. Borovinskaya
Institute of Structural Macrokinetics and Materials Science RAS, Chernogolovka, Moscow Region
Russian Federation
Russian Federation
Dr. Sci., Prof., SHS Laboratory, ISMAN.
142432, Russia, Moscow region, Chernogolovka, Academica Osipyana str., 8. E-mail: inna@ism.ac.ruT. G. Akopdzhanyan
Institute of Structural Macrokinetics and Materials Science RAS, Chernogolovka, Moscow Region
Russian Federation
Russian Federation
Postgraduate Student, SHS Laboratory
T. I. Ignatieva
Institute of Structural Macrokinetics and Materials Science RAS, Chernogolovka, Moscow Region
Russian Federation
PhD, Leading Scientist, Chemical analysis laboratory
Russian Federation
PhD, Leading Scientist, Chemical analysis laboratory
E. A. Chemagina
Institute of Structural Macrokinetics and Materials Science RAS, Chernogolovka, Moscow Region
Russian Federation
Leading Engineer, SHS Laboratory
Russian Federation
Leading Engineer, SHS Laboratory
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Review
For citations:
Borovinskaya I.P., Akopdzhanyan T.G., Ignatieva T.I., Chemagina E.A. STRUCTURE AND PHASE FORMATION OF COMBUSTION PRODUCTS DURING Γ-ALON SYNTHESIS IN SHS GAS-STATTING MODE. Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya). 2016;(3):23-30. (In Russ.) https://doi.org/10.17073/1997-308X-2016-3-23-30
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