Influence of TiB2 content and powder size on the dielectric property of TiB2/Al2O3 composites

Peng Li; Wancheng Zhou; Jiankun Zhu; Fa Luo; Dongmei Zhu

doi:10.1016/j.scriptamat.2009.01.008

Influence of TiB₂ content and powder size on the dielectric property of TiB₂/Al₂O₃ composites

Peng Li, Wancheng Zhou, Jiankun Zhu, Fa Luo, Dongmei Zhu

School of Materials Sience and Engineering

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

29 Scopus citations

Abstract

TiB₂/Al₂O₃ composites were prepared by hot-pressed sintering using TiB₂ and Al₂O₃ powders. The dielectric property of these composites was investigated. The mechanisms of polarization and microwave energy loss were discussed. Both the real part of dielectric constant and the energy loss increase greatly with increasing TiB₂ content over the frequency range 8.2-12.4 GHz. Movement and accumulation of valence electrons in TiB₂ powders caused the polarization and energy loss. The formation of a TiB₂ local network is responsible for the marked increase in the dielectric constant.

Original language	English
Pages (from-to)	760-763
Number of pages	4
Journal	Scripta Materialia
Volume	60
Issue number	9
DOIs	https://doi.org/10.1016/j.scriptamat.2009.01.008
State	Published - May 2009

Keywords

Dielectric
Network

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10.1016/j.scriptamat.2009.01.008

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abstract = "TiB2/Al2O3 composites were prepared by hot-pressed sintering using TiB2 and Al2O3 powders. The dielectric property of these composites was investigated. The mechanisms of polarization and microwave energy loss were discussed. Both the real part of dielectric constant and the energy loss increase greatly with increasing TiB2 content over the frequency range 8.2-12.4 GHz. Movement and accumulation of valence electrons in TiB2 powders caused the polarization and energy loss. The formation of a TiB2 local network is responsible for the marked increase in the dielectric constant.",

keywords = "Dielectric, Network",

author = "Peng Li and Wancheng Zhou and Jiankun Zhu and Fa Luo and Dongmei Zhu",

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T1 - Influence of TiB2 content and powder size on the dielectric property of TiB2/Al2O3 composites

AU - Li, Peng

AU - Zhou, Wancheng

AU - Zhu, Jiankun

AU - Luo, Fa

AU - Zhu, Dongmei

PY - 2009/5

Y1 - 2009/5

N2 - TiB2/Al2O3 composites were prepared by hot-pressed sintering using TiB2 and Al2O3 powders. The dielectric property of these composites was investigated. The mechanisms of polarization and microwave energy loss were discussed. Both the real part of dielectric constant and the energy loss increase greatly with increasing TiB2 content over the frequency range 8.2-12.4 GHz. Movement and accumulation of valence electrons in TiB2 powders caused the polarization and energy loss. The formation of a TiB2 local network is responsible for the marked increase in the dielectric constant.

AB - TiB2/Al2O3 composites were prepared by hot-pressed sintering using TiB2 and Al2O3 powders. The dielectric property of these composites was investigated. The mechanisms of polarization and microwave energy loss were discussed. Both the real part of dielectric constant and the energy loss increase greatly with increasing TiB2 content over the frequency range 8.2-12.4 GHz. Movement and accumulation of valence electrons in TiB2 powders caused the polarization and energy loss. The formation of a TiB2 local network is responsible for the marked increase in the dielectric constant.

KW - Dielectric

KW - Network

UR - http://www.scopus.com/inward/record.url?scp=61349113336&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2009.01.008

DO - 10.1016/j.scriptamat.2009.01.008

M3 - 文章

AN - SCOPUS:61349113336

SN - 1359-6462

VL - 60

SP - 760

EP - 763

JO - Scripta Materialia

JF - Scripta Materialia

IS - 9

ER -

Influence of TiB₂ content and powder size on the dielectric property of TiB₂/Al₂O₃ composites

Abstract

Keywords

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