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http://dx.doi.org/10.4313/JKEM.2011.24.2.131

Effects of Oxidant on the Properties of Sr-ferrites Using Mill Scale  

Cho, Tae-Sik (School of Nano Materials Engineering, Kyungpook National University)
Choi, Seung-Duek (Materials Processing Center, RIST)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.24, no.2, 2011 , pp. 131-135 More about this Journal
Abstract
We have been studied the effects of oxidant on the properties of Sr-ferrite magnets using mill scale for motor. The small-added (0.5 wt%) $NaNO_3$ oxidant improved significantly the degree of oxidation and the grindability of mill scale, and then highly enhanced the magnetic properties of anisotropic Sr-ferrite sintered magnets; such as the remanent flux density from 3.55 to 3.80 kG, the intrinsic coercivity from 2.75 to 3.22 kOe, and the maximum energy product from 2.90 to 3.45 MGOe.
Keywords
Sr-ferrite sintered magnet; Mill scale; $NaNO_3$ oxidant; Oxidation; Grindability;
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Times Cited By KSCI : 3  (Citation Analysis)
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