Hot-pressing sintered BN-SiO2 composite ceramics with excellent thermal conductivity and dielectric properties for high frequency substrate

Wu, Liangliang1,2; Xiang, Feng1,2; Liu, Wenlong1,2; Ma, Rong1,2; Wang, Hong3

2018-10

10.1016/j.ceramint.2018.06.084

CERAMICS INTERNATIONAL   影响因子和分区

0272-8842

1873-3956

High thermal conductivity and low dielectric constant are the more and more important properties for high-frequency substrate materials to enhance their heat radiation and reduce signal delay. In this work, a series of BN-SiO2 composite ceramics for high frequency application were successfully synthesized by hot-pressing sintering method. And their structures, thermal and dielectric properties were systematically studied. According to the results, the excellent thermal conductivity with low dielectric constant and low dielectric loss has been obtained in the BN-SiO2 ceramic. Compared to the pure SiO2, the sample with 50 wt% BN addition sintered at 1650 degrees C exhibited excellent physical properties, including a high thermal conductivity of 6.75 W/m K which is almost five times higher than that of pure SiO2 and a low dielectric constant of 3.73. The achieved high thermal conductivity and appropriate dielectric property of the BN-SiO2 composite ceramic make it a promising candidate for high-frequency substrate application.

Hot pressing Composites Dielectric properties Thermal conductivity

SCI ; EI

英语

通讯

National Key Research Program of China[2017YFB0406303]

Materials Science

Materials Science, Ceramics

WOS:000442714100062

ELSEVIER SCI LTD

20182605365149

Ceramic materials ; Dielectric losses ; Dielectric materials ; Dielectric properties of solids ; Hot pressing ; Low-k dielectric ; Silica ; Sintering

Thermodynamics:641.1 ; Dielectric Materials:708.1 ; Ceramics:812.1 ; Physical Properties of Gases, Liquids and Solids:931.2

MATERIALS SCIENCE

Web of Science

1.Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian 710049, Shaanxi, Peoples R China
2.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Wu, Liangliang,Xiang, Feng,Liu, Wenlong,et al. Hot-pressing sintered BN-SiO2 composite ceramics with excellent thermal conductivity and dielectric properties for high frequency substrate[J]. CERAMICS INTERNATIONAL,2018,44(14):16594-16598.

Wu, Liangliang,Xiang, Feng,Liu, Wenlong,Ma, Rong,&Wang, Hong.(2018).Hot-pressing sintered BN-SiO2 composite ceramics with excellent thermal conductivity and dielectric properties for high frequency substrate.CERAMICS INTERNATIONAL,44(14),16594-16598.

Wu, Liangliang,et al."Hot-pressing sintered BN-SiO2 composite ceramics with excellent thermal conductivity and dielectric properties for high frequency substrate".CERAMICS INTERNATIONAL 44.14(2018):16594-16598.