Effect of carbon monoxide on the carbothermal reduction and nitridation reaction of alumina

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Abstract

The carbothermal reduction and nitridation (CRN) of alumina (Al2O3) to aluminum nitride (AlN) were investigated under a flow of mixed gas of nitrogen and carbon monoxide (CO). The powders obtained by calcining the (hydroxo)(succinato)Al(III) complex under a flow of the mixed gas with different CO contents were characterized by powder XRD and 27Al magic-angle spinning (MAS) NMR spectroscopy. The complex decomposed into ρ-Al2O3, which was then converted into either AlN or δ-Al2O3 through γ-Al2O3, depending on the CO content in the mixed gas. The CRN reaction of Al2O3 became more retarded with increasing content of CO in the mixed gas. © 2008 Elsevier B.V. All rights reserved.

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Joo, H. U., & Jung, W. S. (2008). Effect of carbon monoxide on the carbothermal reduction and nitridation reaction of alumina. Journal of Materials Processing Technology, 204(1–3), 498–501. https://doi.org/10.1016/j.jmatprotec.2008.01.028

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