Tecnologia em Metalurgia, Materiais e Mineração
https://tecnologiammm.com.br/doi/10.4322/tmm.2011.008
Tecnologia em Metalurgia, Materiais e Mineração
Artigo Original

NOVO MODELO DE ENERGIA DE GIBBS PARA O ESPINÉLIO AL2MNO4

A NOVEL GIBBS ENERGY MODEL FOR THE SPINEL AL2MNO4

Siqueira, Rogério Navarro C. de; Avillez, Roberto Ribeiro; Gomez, Angelo Márcio de S.

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Resumo

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Palavras-chave

Energia de Gibbs, Al2MnO4, Capacidade calorífica a pressão constante

Abstract

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Keywords

Gibbs energy, Al2MnO4, Heat capacity at constant pressure

Referências

1 OLSEN, W., HEYNERT, G. Die Reaktionen zwishen Eisen – mangan Schmelzen und den Schmelzen ihre Aluminate. Archiv für das Eissenhutenwessen, v. 26, n. 10, p. 567-75, Oct. 1955.

2 NOVOKAHATISKI, A. N. et al. Equilibrium diagram of the Al2O3(Corundum) – MnO System. Russian Journal of Inorganic Chemistry, v. 11, n. 2, p. 231-2, Feb. 1966.

3 JACOB, K. T. Revision of the thermodynamic data on Al2O3-MnO melts. Canadian Metallurgical Quarterly, v. 20, n. 1, p. 89-92, June 1981.

4 SHARMA, R. A.; RICHARDSON, F. D. Activities of manganese oxide, sulfide capacities and activity coeficients in aluminate and silicate melts. Transactions of the Metallurgical Society AIME, v. 233, p. 1586-1592, Ago. 1965.

5 JUNG, I. et al. Thermodynamic evaluation and optimization of the MnO-Al2O3 and MnO-Al2O3-SiO2 systems, and applications to inclusion engineering. Metalurgical and Materials Transactions B, v. 35, n. 2, p. 258-68, Apr. 2004.

6 NAVARRO, R. C. S. Investigação do sistema Al2O3-MnO: propriedades termodinâmicas do óxido Al2MnO4. 2009. 121 p. Tese (Doutorado em Engenharia de Materiais) − Instituto de Engenharia de Materiais da Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, 2009.

7 HACK, K. The SGTE Casebook: thermodynamics at work. Cambridge: Wood Head, 2009.

8 SOUNDERS, N.; MIODOVINKI, A. P. Calphad (Calculation of phase diagrams): a comprehensive guide. Cambridge: Pergamon, 1998.

9 KAPOOR, M. L.; FROHBERG M, G. Theoretical treatment of activities in silicate melts. Chemical metallurgy of iron and steel. In: International Symposium on Metallurgical Chemistry – applications in ferrous metallurgy, 1973, Berlin, Germany. Chemical metallurgy of iron and steel: proceedings. London: Iron and Steel Institute, 1973. p. 17-22.

10 BERMANN, R. G.; BROWN, T. H. Heat capacity of minerals in the system Na2O-K2O-CaO-MgO-FeO-Fe2O3-Al2O3-SiO2-TiO2-H2O: representation, estimation, and high temperature extrapolation. Contributions to Mineralogy and Petrology, v. 89, n. 2-3, p. 169-83, Dec. 1985. http://dx.doi.org/10.1007/BF00379451

11 JOHNATAN, A. B. et al. Predicting lattice parameter as a function of cationic disorder in the spinel MgAl2O4. Journal of Physics: Condensed Matter, v. 17, p. 7621-31, Nov. 2005. http://dx.doi.org/10.1088/0953-8984/17/48/014

12 HILLERT, M. The compound energy formalism. Journal of Alloy and Compounds, v. 320, n. 2, p. 161-76, May 2001. http://dx.doi.org/10.1016/S0925-8388(00)01481-X

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