Gibbs energy change of carbothermal nitridation reaction of γ-AlON and its thermodynamic stability

Wataru Nakao, Hiroyuki Fukuyama

研究成果: Article査読

11 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)3170-3176
ページ数7
ジャーナルJournal of the American Ceramic Society
88
11
DOI
出版ステータスPublished - 2005 11 1

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 材料化学

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