Fabrication and electromagnetic interference shielding effectiveness of Ti3Si(Al)C2 modified Al2O3/SiC composites

Ning Dong; Lingqi Chen; Xiaowei Yin; Xiaokang Ma; Xinnan Sun; Laifei Cheng; Litong Zhang

doi:10.1016/j.ceramint.2016.03.001

Fabrication and electromagnetic interference shielding effectiveness of Ti₃Si(Al)C₂ modified Al₂O₃/SiC composites

Ning Dong, Lingqi Chen, Xiaowei Yin^*, Xiaokang Ma, Xinnan Sun, Laifei Cheng, Litong Zhang

^*Corresponding author for this work

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

A dense alumina fiber reinforced silicon carbide matrix composites (Al₂O₃/SiC) modified with Ti₃Si(Al)C₂ were prepared by a joint process of chemical vapor infiltration, slurry infiltration and reactive melt infiltration. The conductive Ti₃Si(Al)C₂ phase introduced into the matrix modified the microstructure of Al₂O₃/SiC. The refined microstructure was composed of conductive phase, semiconductive phase and insulating phase, which led to admirable electromagnetic shielding properties. Electromagnetic interference shielding effectiveness (EMI SE) of Al₂O₃/SiC and Ti₃Si(Al)C₂ modified Al₂O₃/SiC were investigated over the frequency range of 8.2-12.4 GHz. The EMI SE of Al₂O₃/SiC-Ti₃Si(Al)C₂ exhibited a significant increase from 27.6 to 42.1 dB compared with that of Al₂O₃/SiC. The reflection and absorption shielding effectiveness increased simultaneously with the increase of the electrical conductivity.

Original language	English
Pages (from-to)	9448-9454
Number of pages	7
Journal	Ceramics International
Volume	42
Issue number	8
DOIs	https://doi.org/10.1016/j.ceramint.2016.03.001
Publication status	Published - 1 Jun 2016
Externally published	Yes

Keywords

AlO/SiC
Electrical conductivity
Electromagnetic interference shielding effectiveness
Reactive melt infiltration
TiSi(Al)C

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10.1016/j.ceramint.2016.03.001

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title = "Fabrication and electromagnetic interference shielding effectiveness of Ti3Si(Al)C2 modified Al2O3/SiC composites",

abstract = "A dense alumina fiber reinforced silicon carbide matrix composites (Al2O3/SiC) modified with Ti3Si(Al)C2 were prepared by a joint process of chemical vapor infiltration, slurry infiltration and reactive melt infiltration. The conductive Ti3Si(Al)C2 phase introduced into the matrix modified the microstructure of Al2O3/SiC. The refined microstructure was composed of conductive phase, semiconductive phase and insulating phase, which led to admirable electromagnetic shielding properties. Electromagnetic interference shielding effectiveness (EMI SE) of Al2O3/SiC and Ti3Si(Al)C2 modified Al2O3/SiC were investigated over the frequency range of 8.2-12.4 GHz. The EMI SE of Al2O3/SiC-Ti3Si(Al)C2 exhibited a significant increase from 27.6 to 42.1 dB compared with that of Al2O3/SiC. The reflection and absorption shielding effectiveness increased simultaneously with the increase of the electrical conductivity.",

keywords = "AlO/SiC, Electrical conductivity, Electromagnetic interference shielding effectiveness, Reactive melt infiltration, TiSi(Al)C",

author = "Ning Dong and Lingqi Chen and Xiaowei Yin and Xiaokang Ma and Xinnan Sun and Laifei Cheng and Litong Zhang",

year = "2016",

month = jun,

day = "1",

doi = "10.1016/j.ceramint.2016.03.001",

language = "English",

volume = "42",

pages = "9448--9454",

journal = "Ceramics International",

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TY - JOUR

T1 - Fabrication and electromagnetic interference shielding effectiveness of Ti3Si(Al)C2 modified Al2O3/SiC composites

AU - Dong, Ning

AU - Chen, Lingqi

AU - Yin, Xiaowei

AU - Ma, Xiaokang

AU - Sun, Xinnan

AU - Cheng, Laifei

AU - Zhang, Litong

PY - 2016/6/1

Y1 - 2016/6/1

N2 - A dense alumina fiber reinforced silicon carbide matrix composites (Al2O3/SiC) modified with Ti3Si(Al)C2 were prepared by a joint process of chemical vapor infiltration, slurry infiltration and reactive melt infiltration. The conductive Ti3Si(Al)C2 phase introduced into the matrix modified the microstructure of Al2O3/SiC. The refined microstructure was composed of conductive phase, semiconductive phase and insulating phase, which led to admirable electromagnetic shielding properties. Electromagnetic interference shielding effectiveness (EMI SE) of Al2O3/SiC and Ti3Si(Al)C2 modified Al2O3/SiC were investigated over the frequency range of 8.2-12.4 GHz. The EMI SE of Al2O3/SiC-Ti3Si(Al)C2 exhibited a significant increase from 27.6 to 42.1 dB compared with that of Al2O3/SiC. The reflection and absorption shielding effectiveness increased simultaneously with the increase of the electrical conductivity.

AB - A dense alumina fiber reinforced silicon carbide matrix composites (Al2O3/SiC) modified with Ti3Si(Al)C2 were prepared by a joint process of chemical vapor infiltration, slurry infiltration and reactive melt infiltration. The conductive Ti3Si(Al)C2 phase introduced into the matrix modified the microstructure of Al2O3/SiC. The refined microstructure was composed of conductive phase, semiconductive phase and insulating phase, which led to admirable electromagnetic shielding properties. Electromagnetic interference shielding effectiveness (EMI SE) of Al2O3/SiC and Ti3Si(Al)C2 modified Al2O3/SiC were investigated over the frequency range of 8.2-12.4 GHz. The EMI SE of Al2O3/SiC-Ti3Si(Al)C2 exhibited a significant increase from 27.6 to 42.1 dB compared with that of Al2O3/SiC. The reflection and absorption shielding effectiveness increased simultaneously with the increase of the electrical conductivity.

KW - AlO/SiC

KW - Electrical conductivity

KW - Electromagnetic interference shielding effectiveness

KW - Reactive melt infiltration

KW - TiSi(Al)C

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U2 - 10.1016/j.ceramint.2016.03.001

DO - 10.1016/j.ceramint.2016.03.001

M3 - Article

AN - SCOPUS:84977934838

SN - 0272-8842

VL - 42

SP - 9448

EP - 9454

JO - Ceramics International

JF - Ceramics International

IS - 8

ER -

Fabrication and electromagnetic interference shielding effectiveness of Ti₃Si(Al)C₂ modified Al₂O₃/SiC composites

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Keywords

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