Poly-para-xylylene enhanced Fe-based amorphous powder cores with improved soft magnetic properties via chemical vapor deposition

doi:10.1016/j.matdes.2020.108650

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	Poly-para-xylylene enhanced Fe-based amorphous powder cores with improved soft magnetic properties via chemical vapor deposition
	Zhang, Yiqun; Dong, Yaqiang; Zhou, Bang; Chi, Qiang; Chang, Liang; Gong, Mengji; Huang, Jianjun; Pan, Yan; He, Aina; Li, Jiawei
刊名	MATERIALS & DESIGN
	2020
卷号	191
关键词	DC-BIAS COMPOSITES FABRICATION PARTICLES PERMEABILITY PERFORMANCE INSULATION PARYLENE SILICON CATION
DOI	10.1016/j.matdes.2020.108650
英文摘要	In this work, dense and pinhole-free poly-para-xylylene (PPX) with high thermal stability, high insulating property and high lubricity has been designed as coating layer for Fe-based amorphous powder. Three ultra-thin PPX layers have been successfully deposited on the surface of FeSiBPNbCr amorphous powder via chemical vapor deposition (CVD) polymerization. The micromorphology and chemical structure of the PPX layer on the powder surface, as well as the conversion mechanisms, has been investigated systematically. Several methods have been used to estimate the amount and thickness of PPX layers. The corresponding amorphous powder cores (AMPCs) were also prepared. With the increasing thickness of the PPX layer, the saturation magnetization (M-s) of the powder decreased slightly but the magnetic flux density (B-s) of the AMPCs kept at a similar level thanked to the enhanced green density. In addition, the DC bias performance was improved and core loss (P-cv) was reduced. Compare with other coating materials like epoxy and silicon resin, the PPX layer provided better insulation and higher lubricity for the AMPCs, thus reduced the Pcv and improved the DC bias performance. The AMPCs coated by PPX-3 exhibited excellent comprehensive soft magnetic properties, which were promising for high-power and high-frequency applications. (C) 2020 The Authors. Published by Elsevier Ltd.
学科主题	Materials Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20764]
专题	2020专题
作者单位	Dong, YQ (corresponding author), Chinese Acad Sci, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo Inst Mat & Engn, CAS Key Lab Magnet Mat & Devices, Ningbo 315201, Zhejiang, Peoples R China.
推荐引用方式 GB/T 7714	Zhang, Yiqun,Dong, Yaqiang,Zhou, Bang,et al. Poly-para-xylylene enhanced Fe-based amorphous powder cores with improved soft magnetic properties via chemical vapor deposition[J]. MATERIALS & DESIGN,2020,191.
APA	Zhang, Yiqun.,Dong, Yaqiang.,Zhou, Bang.,Chi, Qiang.,Chang, Liang.,...&Wang, Xinmin.(2020).Poly-para-xylylene enhanced Fe-based amorphous powder cores with improved soft magnetic properties via chemical vapor deposition.MATERIALS & DESIGN,191.
MLA	Zhang, Yiqun,et al."Poly-para-xylylene enhanced Fe-based amorphous powder cores with improved soft magnetic properties via chemical vapor deposition".MATERIALS & DESIGN 191(2020).