TY - JOUR
T1 - Gibbs energy change of carbothermal nitridation reaction of γ-AlON and its thermodynamic stability
AU - Nakao, Wataru
AU - Fukuyama, Hiroyuki
PY - 2005/11
Y1 - 2005/11
N2 - In order to determine the standard Gibbs energy change of carbothermal nitridation reaction of γ-aluminum oxynitride spinel, γ-AlON, the equilibrium N2-CO gas compositions coexisting with γ-AlON, aluminum nitride (AlN), and graphite have been measured by means of gas chromatography at elevated temperatures. From the results obtained, the standard Gibbs energy change has been determined at temperatures ranging from 1912 to 2002 K,where γ-AlON is expressed as Al(64+x)3V(8-x)3O32-xNx (V: vacancy). Moreover, the thermodynamic stability in the homogeneous phase region of γ-AlON has been evaluated by a thermodynamic model of γ-AlON together with the experimental results.
AB - In order to determine the standard Gibbs energy change of carbothermal nitridation reaction of γ-aluminum oxynitride spinel, γ-AlON, the equilibrium N2-CO gas compositions coexisting with γ-AlON, aluminum nitride (AlN), and graphite have been measured by means of gas chromatography at elevated temperatures. From the results obtained, the standard Gibbs energy change has been determined at temperatures ranging from 1912 to 2002 K,where γ-AlON is expressed as Al(64+x)3V(8-x)3O32-xNx (V: vacancy). Moreover, the thermodynamic stability in the homogeneous phase region of γ-AlON has been evaluated by a thermodynamic model of γ-AlON together with the experimental results.
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U2 - 10.1111/j.1551-2916.2005.00565.x
DO - 10.1111/j.1551-2916.2005.00565.x
M3 - Article
AN - SCOPUS:33745326147
SN - 0002-7820
VL - 88
SP - 3170
EP - 3176
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 11
ER -