Determination of Active Metal in Ultradispersed Iron Powders and TG Study of Their Oxidation |
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| Authors: | Zhygotsky A G |
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| Institution: | (1) Institute of Colloid and Water Chemistry, National Academy of Sciences of Ukraine, Vernadsky avenue 42, 252680 Kyiv-142, Ukraine |
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| Abstract: | Two oxidation stages of electrolytic ultradispersed iron powder at the temperature range of 90–450°C have been stated. The
contribution of increasing mass and evolving heat at the first oxidation stage due to changing Fe0 into Fe2O3 in the total oxidation effect is predominant. The thermal method of active metal determination in electrolytic iron powders
has been developed. The coarse-grained reduced iron powder was not oxidized completely just to 900°C because of local sintering
of big iron particles as a result of evolving heat at oxidation of high-dispersed iron particles.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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| Keywords: | active metal high-dispersed iron powder oxidation thermogravimetry |
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