Al2O3 dielectric ceramic tapes containing hBN for applications on high-frequency substrates

被引:5
作者
Chiberio, Paulo H. [1 ]
Alves, Hugo P. A. [2 ]
Alves Jr, Rubens [3 ]
Dantas Neto, Joao M. [1 ]
Acchar, Wilson [1 ,4 ]
机构
[1] Univ Fed Rio Grande do Norte, Postgrad Program Sci & Mat Engn, BR-59078970 Natal, RN, Brazil
[2] Univ Fed Paraiba, Postgrad Program Mat Sci & Engn, BR-58051900 Joao Pessoa, PB, Brazil
[3] Univ Fed Campina Grande, Postgrad Program Mat Sci & Engn, BR-58429900 Campina Grande, PB, Brazil
[4] Univ Fed Rio Grande do Norte, Dept Phys, BR-59078970 Natal, RN, Brazil
关键词
Alumina; Hexagonal boron nitride; Tape casting; High-frequency substrate; MECHANICAL-PROPERTIES; BN CONTENT; MICROSTRUCTURE; FABRICATION; COMPOSITES;
D O I
10.1016/j.ceramint.2023.11.011
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this study, we manufactured dielectric alumina (Al2O3) ceramic tapes incorporated with hexagonal boron nitride (hBN) for applications on high-frequency substrates. The ceramic tapes were produced using the tape casting technique. Structural and morphological analyzes show the presence of hBN nanoplatelets dispersed in the Al2O3 matrix, confirming the efficiency of the tape-casting technique and the sintering process. We verified that the crystalline structure of hBN is essential in the dielectric response, showing a reduction in dielectric losses with the incorporation of hBN into the Al2O3 ceramic matrix, making ceramic tapes attractive in dielectric applications. Furthermore, the mechanical properties of the tapes show satisfactory results, reinforcing our findings. Thus, our results become fascinating for applications in high-frequency substrates for electronic transmission devices.
引用
收藏
页码:2864 / 2870
页数:7
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