Preparation of Ni-B Coating on Carbonyl Iron and Its Microwave Absorption Properties in the X Band

Ni-B coated carbonyl iron particles （CI@Ni-B） are prepared by the electroless plating technique. The structure, morphology, and antioxidant properties of the CI@Ni-B particles are analyzed. The results demonstrate that the CI particles have been coated with intact spherical-shell Ni-B coating, indic...

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Bibliographic Details
Published inChinese physics letters Vol. 31; no. 9; pp. 148 - 150
Main Author 李茸 周万城 卿玉长
Format Journal Article
LanguageEnglish
Published 01.09.2014
Subjects
X波段
一步氧化
化学镀技术
微波吸收性能
抗氧化性能
涂层厚度
羰基铁粒子
颗粒含量
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/31/9/097701

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Summary:Ni-B coated carbonyl iron particles （CI@Ni-B） are prepared by the electroless plating technique. The structure, morphology, and antioxidant properties of the CI@Ni-B particles are analyzed. The results demonstrate that the CI particles have been coated with intact spherical-shell Ni-B coating, indicating the core-shell structure of CI@Ni-B particles, and the Ni-B coating can prevent the further oxidation of the CI particles. Compared with the raw CI particles/paraffin coatings with the same coating thickness of 2.0mm and particles content of 70%, the CI@Ni-B particles/paraffin coatings possess higher microwave absorption （the RL exceeding -10 dB is obtained in the whole X band （8.2-12.4GHz） with minimal RL of -3f.OdB at 9.2GHz）.
Bibliography:11-1959/O4
Ni-B coated carbonyl iron particles （CI@Ni-B） are prepared by the electroless plating technique. The structure, morphology, and antioxidant properties of the CI@Ni-B particles are analyzed. The results demonstrate that the CI particles have been coated with intact spherical-shell Ni-B coating, indicating the core-shell structure of CI@Ni-B particles, and the Ni-B coating can prevent the further oxidation of the CI particles. Compared with the raw CI particles/paraffin coatings with the same coating thickness of 2.0mm and particles content of 70%, the CI@Ni-B particles/paraffin coatings possess higher microwave absorption （the RL exceeding -10 dB is obtained in the whole X band （8.2-12.4GHz） with minimal RL of -3f.OdB at 9.2GHz）.
LI Rong, ZHOU Wan-Cheng, QING Yu-Chang（1. State Key Laboratory of Solidification Processing, School of Materials Science and Engineering Northwestern PolytechnJcal University, Xi＇an 710072; 2.No. 603 Faculty, Xi＇an Institute of High Technology, Xi＇an 710025）
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/31/9/097701