Effect of microwave sintering on the microstructure and dielectric properties of 0.92MgAl2O4–0.08(Ca0.8Sr0.2)TiO3 ceramics

Jun Yu; Chunying Shen; Tai Qiu

doi:10.1007/s10854-015-2752-6

Effect of microwave sintering on the microstructure and dielectric properties of 0.92MgAl₂O₄–0.08(Ca_0.8Sr_0.2)TiO₃ ceramics

Jun Yu, Chunying Shen, Tai Qiu

College of Materials Science and Engineering

Nanjing Tech University

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

6 Scopus citations

Abstract

The 0.92MgAl₂O₄–0.08(Ca_0.8Sr_0.2)TiO₃ ceramics were fabricated using microwave and conventional sintering techniques. The effects of microwave sintering and conventional sintering on the sintering behaviour, microstructure and microwave dielectric properties of 0.92MgAl₂O₄–0.08(Ca_0.8Sr_0.2)TiO₃ ceramics were investigated. The sintering time of microwave sintering was much shorter and the impurity phase Ca₃Al₂O₆ was eliminated as compared with conventional sintering. Furthermore, the microwave sintering samples exhibited higher densification, more uniform grain distribution and better dielectric properties. As a result, excellent dielectric properties of 11.20 for ε_r, 56217 GHz for Q × f, and −3.4 ppm/ °C for τ_f were obtained by microwave sintering at 1440 °C for 20 min.

Original language	English
Pages (from-to)	2737-2741
Number of pages	5
Journal	Journal of Materials Science: Materials in Electronics
Volume	26
Issue number	5
DOIs	https://doi.org/10.1007/s10854-015-2752-6
State	Published - 1 May 2015

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title = "Effect of microwave sintering on the microstructure and dielectric properties of 0.92MgAl2O4–0.08(Ca0.8Sr0.2)TiO3 ceramics",

abstract = "The 0.92MgAl2O4–0.08(Ca0.8Sr0.2)TiO3 ceramics were fabricated using microwave and conventional sintering techniques. The effects of microwave sintering and conventional sintering on the sintering behaviour, microstructure and microwave dielectric properties of 0.92MgAl2O4–0.08(Ca0.8Sr0.2)TiO3 ceramics were investigated. The sintering time of microwave sintering was much shorter and the impurity phase Ca3Al2O6 was eliminated as compared with conventional sintering. Furthermore, the microwave sintering samples exhibited higher densification, more uniform grain distribution and better dielectric properties. As a result, excellent dielectric properties of 11.20 for εr, 56217 GHz for Q × f, and −3.4 ppm/ °C for τf were obtained by microwave sintering at 1440 °C for 20 min.",

author = "Jun Yu and Chunying Shen and Tai Qiu",

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T1 - Effect of microwave sintering on the microstructure and dielectric properties of 0.92MgAl2O4–0.08(Ca0.8Sr0.2)TiO3 ceramics

AU - Yu, Jun

AU - Shen, Chunying

AU - Qiu, Tai

PY - 2015/5/1

Y1 - 2015/5/1

N2 - The 0.92MgAl2O4–0.08(Ca0.8Sr0.2)TiO3 ceramics were fabricated using microwave and conventional sintering techniques. The effects of microwave sintering and conventional sintering on the sintering behaviour, microstructure and microwave dielectric properties of 0.92MgAl2O4–0.08(Ca0.8Sr0.2)TiO3 ceramics were investigated. The sintering time of microwave sintering was much shorter and the impurity phase Ca3Al2O6 was eliminated as compared with conventional sintering. Furthermore, the microwave sintering samples exhibited higher densification, more uniform grain distribution and better dielectric properties. As a result, excellent dielectric properties of 11.20 for εr, 56217 GHz for Q × f, and −3.4 ppm/ °C for τf were obtained by microwave sintering at 1440 °C for 20 min.

AB - The 0.92MgAl2O4–0.08(Ca0.8Sr0.2)TiO3 ceramics were fabricated using microwave and conventional sintering techniques. The effects of microwave sintering and conventional sintering on the sintering behaviour, microstructure and microwave dielectric properties of 0.92MgAl2O4–0.08(Ca0.8Sr0.2)TiO3 ceramics were investigated. The sintering time of microwave sintering was much shorter and the impurity phase Ca3Al2O6 was eliminated as compared with conventional sintering. Furthermore, the microwave sintering samples exhibited higher densification, more uniform grain distribution and better dielectric properties. As a result, excellent dielectric properties of 11.20 for εr, 56217 GHz for Q × f, and −3.4 ppm/ °C for τf were obtained by microwave sintering at 1440 °C for 20 min.

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Effect of microwave sintering on the microstructure and dielectric properties of 0.92MgAl₂O₄–0.08(Ca_0.8Sr_0.2)TiO₃ ceramics

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