Preparation and properties of ultrafine composite powders of Fe<sub>3</sub>O<sub>4</sub> and Ni/MICA_中国颗粒学会

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Partic. vol. 3 no. 3 pp. 187-190 (June 2005)
doi: 10.1016/S1672-2515(07)60084-0

Preparation and properties of ultrafine composite powders of Fe3O4 and Ni/MICA

Yucheng Wua,b,*, Jiaqin Liua, Rujun Xuea, Guozhong Wangb, Lide Zhangb

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ycwu@issp.ac.cn

Abstract

This paper presents the preparation of ultrafine powders of Fe3O4 and Ni by a chemical method, followed by mixing the prepared powders with mica and other ultrafine powders for synthesizing microwave absorption coatings. The microwave attenuation rate of the coatings was measured by the Microwave Network Analyzer in the frequency range of 8-12 GHz at room temperature. The results indicate that microwave could be absorbed by the coatings with an effectiveness strongly dependent on the powder sort and content and the coating thickness.

Keywords

ultrafine powders; coating; microwave attenuation