STUDY RESULTS FROM YEREVAN STATE UNIVERSITY UPDATE UNDERSTANDING OF CHEMICAL ENGINEERING

Journal of Engineering
December 3, 2008

"The possibilities of the synthesis of submicroll MoSi2 and MoSi2-Si3N4
composite powders were investigated using inorganic salt-assisted
combustion synthesis method. Combustion laws in the MoO3-3Mg-2Si-NaCl
and Mo-5Si-NaCl-Si3N4-N-2 systems were studied," scientists in Yerevan,
Armenia report.

"The main factors influencing the combustion parameters, phase
composition and microstructure of products for both these systems
were determined experimentally. Optimum synthesis conditions of
submicron MOSi2 and MoSi2-Si3N4 composite powders containing 30-40wt.%
of molybdenum disilicide were determined. Compacting conditions for
30wt.%MoSi2-70wt.%Si3N4 composite using the hot pressing technique
were found. Compact samples 20mm in diameter were obtained," wrote
K.V. Manukyan and colleagues, Yerevan State University.

The researchers concluded: "Microstructure, phase and chemical
compositions of the dense samples were studied."

Manukyan and colleagues published their study in Chemical Engineering
Journal (Molten salt-assisted combustion synthesis and characterization
of MoSi2 and MoSi2-Si3N4 composite powders. Chemical Engineering
Journal, 2008;143(1-3):331-336).

For more information, contact K.V. Manukyan, Yerevan State University,
Dept. of Inorgan Chemical, A Manukyan 1, AM-0025 Yerevan, Armenia.

Publisher contact information for the Chemical Engineering Journal is:
Elsevier Science SA, PO Box 564, 1001 Lausanne, Switzerland.