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Chemical & Chemistry
October 29, 2010
CHEMICAL ENGINEERING;
New chemical engineering study results reported from Yerevan State University
"In this work combustion and phase formation laws for mechanically and
thermally activated Cr-Si-C system were studied. For thermal
stimulation in the combustion reaction Mg-(-C2F4-) high caloric
mixture was used," researchers in Yerevan, Armenia report.
"It was shown that in the system understudy, combustion takes place by
two sequential stages. The first stage is interaction between Si and
(C2F4-) or Mg with (C2F4-) (temperature can rise up to 1200 degrees
C), which are responsible for combustion front propagation. In the
first stage, formation of small amount of CrSi2 takes place. The
second stage is Si + C reaction which is responsible for
high-temperature combustion. In the second stage, formation of CrSi2
completes. The influence of mechanical treatment on combustion laws
for (Cr-Si) + (Si-C)+(Mg-(C2F4)) system was investigated," wrote A.A.
Hambardzumyan and colleagues, Yerevan State University.
The researchers concluded: "It was shown that mechanical activation
(MA) is effective for systems where amount of chromium is high, while
for systems where Si-C part is appreciable MA does not have any
affect."
Hambardzumyan and colleagues published their study in Chemical
Engineering Journal (Combined effect of thermal and mechanical
activation on the combustion and phase formation laws in the Cr-Si-C
system. Chemical Engineering Journal, 2010;162(3):1075-1081).
For additional information, contact H.L. Khachatryan, Yerevan State
University, Dept. of Inorgan Chemical, A Manukyan 1, Yerevan 0025,
Armenia.
Publisher contact information for the Chemical Engineering Journal is:
Elsevier Science SA, PO Box 564, 1001 Lausanne, Switzerland.
From: A. Papazian
October 29, 2010
CHEMICAL ENGINEERING;
New chemical engineering study results reported from Yerevan State University
"In this work combustion and phase formation laws for mechanically and
thermally activated Cr-Si-C system were studied. For thermal
stimulation in the combustion reaction Mg-(-C2F4-) high caloric
mixture was used," researchers in Yerevan, Armenia report.
"It was shown that in the system understudy, combustion takes place by
two sequential stages. The first stage is interaction between Si and
(C2F4-) or Mg with (C2F4-) (temperature can rise up to 1200 degrees
C), which are responsible for combustion front propagation. In the
first stage, formation of small amount of CrSi2 takes place. The
second stage is Si + C reaction which is responsible for
high-temperature combustion. In the second stage, formation of CrSi2
completes. The influence of mechanical treatment on combustion laws
for (Cr-Si) + (Si-C)+(Mg-(C2F4)) system was investigated," wrote A.A.
Hambardzumyan and colleagues, Yerevan State University.
The researchers concluded: "It was shown that mechanical activation
(MA) is effective for systems where amount of chromium is high, while
for systems where Si-C part is appreciable MA does not have any
affect."
Hambardzumyan and colleagues published their study in Chemical
Engineering Journal (Combined effect of thermal and mechanical
activation on the combustion and phase formation laws in the Cr-Si-C
system. Chemical Engineering Journal, 2010;162(3):1075-1081).
For additional information, contact H.L. Khachatryan, Yerevan State
University, Dept. of Inorgan Chemical, A Manukyan 1, Yerevan 0025,
Armenia.
Publisher contact information for the Chemical Engineering Journal is:
Elsevier Science SA, PO Box 564, 1001 Lausanne, Switzerland.
From: A. Papazian