Effects of milling methods on the dielectric and the mechanical properties of hot-pressed sintered MoSi2/Al2O3 composites

Huang, Zhibin; Zhou, Wancheng; Tang, Xiufeng; Zhu, Joe

doi:10.1016/j.jallcom.2010.10.088

Cited by 17 publications

(7 citation statements)

References 22 publications

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“…When EM wave radiates to the microwave absorption materials, conductive current will be formed in the materials which can transform the EM wave energy to heat. The interparticle distance of the absorbents plays an important role in the electric conductivity, which can be expressed as follows [17]:…”

Section: Dielectric Property Of the Ti 3 Sic 2 Powdersmentioning

confidence: 99%

Influence of oxidation on the dielectric and microwave absorption properties of the milled Ti3SiC2 powders

Liu

Luo

et al. 2015

Journal of Alloys and Compounds

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Section: Dielectric Property Of the Ti 3 Sic 2 Powdersmentioning

confidence: 99%

Influence of oxidation on the dielectric and microwave absorption properties of the milled Ti3SiC2 powders

Liu

Luo

et al. 2015

Journal of Alloys and Compounds

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“…It is clear that the increase of e¢¢ with increasing Ti 3 SiC 2 content is attributed to the increase of electrical conductivity. The conductivity of the ceramic consisting of insulating matrix (Al 2 O 3 ) and conducting filler (Ti 3 SiC 2 ) is dominated by the interparticle distance of the filler, as expressed by 17 :…”

Section: Effect Of Ti 3 Sic 2 Content On Dielectric Propertiesmentioning

confidence: 99%

Mechanical, Dielectric, and Microwave-Absorption Properties of Alumina Ceramic Containing Dispersed Ti3SiC2

Liu

Luo

et al. 2015

Journal of Elec Materi

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Dense Al 2 O 3 ceramics containing dispersed Ti 3 SiC 2 were fabricated by hotpressed sintering. Effects of Ti 3 SiC 2 content on the mechanical, dielectric, and microwave-absorption properties of the ceramics were investigated. The bulk density, flexural strength, and dielectric constant were enhanced by increasing the Ti 3 SiC 2 content. The complex permittivity increased dramatically when the Ti 3 SiC 2 content was above the percolation threshold. The dielectric performance of the ceramics at high temperatures was also studied. The results revealed increases in both the real and imaginary parts with increasing temperature. Ceramic 2.2 mm thick containing 10% (w/w) Ti 3 SiC 2 had the optimum microwave-absorption properties. The absorption bandwidth below À5 dB was in the range 8.2-12.4 GHz with a minimum value of À20 dB at 9.56 GHz. Although the reflection loss increased with the increasing temperature, the ceramic still had favorable microwave-absorption properties throughout the X-band. This study contributes to the development of the microwave absorption materials for high-temperature application.

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“…(3) that the increase of e 00 is ascribed to the intrinsic conductivity. And the conductivity of the cermets consists of insulated matrix and conductive metal particle is dominated by the interparticle distance of the metal fillers, which can be illustrated as follows [15]:…”

Section: Dielectric Propertiesmentioning

confidence: 99%

Effect of feedstock characteristics on the dielectric and microwave absorption properties of plasma sprayed NiCrAlY/Al2O3 coatings

Zhou

Shan

et al. 2015

J Mater Sci: Mater Electron

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NiCrAlY/Al 2 O 3 coatings were fabricated by low power plasma spraying with two different feedstock powders. The microstructure, phase composition and dielectric properties of the coatings were investigated. The result showed that the particle melting degree and the connection of NiCrAlY in the coatings were closely related to the feedstock characteristics, such as particle size and morphology, which played an important role in the microstructure and dielectric properties. The enhanced complex permittivity of the coating deposited from dried and crushed powder is attributed to interfacial polarization and conductance loss. Compared with the coating prepared from milled and agglomerated powder, the reflection loss of the coating fabricated with dried and crushed powder reaches -20.5 dB at 9.9 GHz and the eligible microwave absorption (below -10 dB) can be obtained in the frequency range 8.7-10.8 GHz.

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Effects of milling methods on the dielectric and the mechanical properties of hot-pressed sintered MoSi2/Al2O3 composites

Cited by 17 publications

References 22 publications

Influence of oxidation on the dielectric and microwave absorption properties of the milled Ti3SiC2 powders

Influence of oxidation on the dielectric and microwave absorption properties of the milled Ti3SiC2 powders

Mechanical, Dielectric, and Microwave-Absorption Properties of Alumina Ceramic Containing Dispersed Ti3SiC2

Effect of feedstock characteristics on the dielectric and microwave absorption properties of plasma sprayed NiCrAlY/Al2O3 coatings

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