Effect of Powder Particle Surface Treatment on DC Magnetic Properties of Compacted Iron Cores

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Martin Tkáč;Peter Kollár;Robert Maciaszek;Samuel Dobák;Ján Füzer;Denisa Olekšáková;Radovan Bureš;Mária Fáberová
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引用次数: 0

Abstract

Soft magnetic iron finds practical use in many applications, such as electromagnets and relays. In order for these devices to work effectively, it is necessary to know their dc magnetic properties. Soft magnetic compacted powder cores possess lower permeability than powder particles from which they were prepared, due to the inner demagnetization factor caused by the existence of pores in the core structure. The aim of the work was to determine the effect of surface mechanical treatment of iron powder particles of two different size fractions, leading either to an increase in the demagnetization factor or to a positive effect on the dc magnetic properties of the resulting compacted cores. For samples prepared from smaller powder particles, we found, that despite the increase in inner demagnetization factor as a result of the smoothing procedure, the differential relative permeability increased, and total energy loss decreased.
粉末颗粒表面处理对压制铁芯直流磁性能的影响
软磁铁在许多应用中都有实际用途,例如电磁铁和继电器。为了使这些设备有效工作,有必要了解它们的直流磁性能。软磁压制粉芯的磁导率低于制备它们的粉末颗粒,这是由于粉芯结构中存在孔隙而导致的内部退磁因素。这项工作的目的是确定对两种不同尺寸的铁粉颗粒进行表面机械处理的效果,这种处理要么会导致退磁因子的增加,要么会对由此产生的压制磁芯的直流磁性能产生积极影响。对于用较小的粉末颗粒制备的样品,我们发现,尽管平滑程序导致内部退磁因子增加,但差分相对磁导率增加,总能量损失减少。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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