Sintering in Active Nickel Oxide |
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| Authors: | R. A. BROWN |
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| Affiliation: | Inorganic Research Laboratories, Department of Chemistry, Imperial College of Science and Technology, London, England |
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| Abstract: | Decomposition of nickel oxalate at 450°C in a stream of oxygen for 0.5 hr produced very reactive nickel oxide. Sintering rates in this material were faster (by factors up to 40) than in unreactive nickel oxide, produced by calcining nickel oxalate at 900°C for 5 hr in air. The Arrhenius activation energies for densification were significantly different in the two systems. Preliminary studies confirmed that normal grain growth, which follows a law of the form G3 = kt , occurs in nickel oxide. |
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