Journal of the Ceramic Society of Japan, Supplement
Online ISSN : 1349-2756
ISSN-L : 1349-2756
Journal of the Ceramic Society of Japan, Supplement 112-1, PacRim5 Special Issue
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Self-Propagating High-Temperature Synthesis of Nickel Aluminate Spinel
Tao SUNXiaoshan NINGKexin CHENYong Sheng HANHeping ZHOU
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Nickel aluminate (NiAl2O4) spinel has a high electric conductivity and a good stability at high temperature, and it becomes a promising candidate as anode material in aluminum electrolysis. The self-propagating high-temperature synthesis (SHS) technique was employed in the present work to produce NiAl2O4 spinel by using Al and NiO as reactants. The synthesized powders were studied by SEM and XRD. The XRD results show that the formation of NiAl2O4 depends on the molar ratio (R) of NiO/Al, and NiAl2O4 spinel could only be formed when the molar ratio is higher than 1.5. The amount of the NiAl2O4 spinel reaches maximum when the molar ratio was 2. The reaction chemistry and the reaction mechanism are also discussed in this article.

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© 2004 The Ceramic Society of Japan
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