“Carbon Coatingand reaction on magnesia-alumina spinel”

A.D. MAZZONI, M.A. SAINZ, E.F. AGLIETTI.

MATERIALS CHEMISTRY AND PHYSICS

Elsevier

Lugar: belgica; Año: 2007 vol. 101 p. 211 - 216

0254-0584

The reactions that took place in the spinel and in the carbon–spinel interface at high temperatures (1250–1800 ◦C) under low oxygen partial pressure (PO2 ≤ 10−16 MPa) are described in detail. Scanning electron microscopy equipped with microanalysis by energy dispersion (SEM-EDS) and X-ray diffraction lattice parameter have been used to determine the extent of solid solubility of Al2O3 in MgAl2O4. The Al2O3/MgO spinel ratio at different temperatures in air and packed with carbon were also determined. The behavior of spinel under these reducing conditions was discussed. © 2006 Elsevier B.V. All rights reserved. Keywords: Spinel; Stability; Carbon; Reaction