Enhanced Thermal Conductivity and Dielectric Performance of CMZBS–Glass–Ceramic Composites with AlN Whisker Incorporation for LTCC Applications
Year: 2025
Type: article
Abstract: In this work, a small amount of AlN whiskers (ranging from 2 wt.% to 8 wt.%) was incorporated into CaO-MgO-ZnO-B2O3-SiO2 (CMZBS)–glass/Al2O3 composites so as to obtain glass-ceramics with a thermally conductive network through sintering between 700 °C and 1000 °C. Special attention was given to the densification behavior, dielectric properties, and thermal conductivity of CMZBS/Al2O3/AlN–glass–ceramic composites with varying AlN whisker contents. According to the results, composites with desirable thermal, mechanical, and dielectrical properties were successfully fabricated. Notably, the composites containing 6 wt.% AlN whiskers, sintered at 800 °C, exhibited the most optimal comprehensive properties (dielectric constant of 7.06, dielectric loss of 383 × 10−5, thermal expansion coefficient of 6.40·10−6/K, flexural strength of 180 MPa, and thermal conductivity of 5.17 W/(m·K)). Given these attributes, this CMZBS/Al2O3/AlN composite holds great potential for applications in LTCC (low-temperature co-fired ceramic).
Source: Materials
DOI: 10.3390/ma18040857
Authors: Tiange Xue, Xinqing Su, Shixiang Yu, Meng Meng, Xinya Xu, Jinqi Xin, Jinjin Ran
Institution: Nanjing University of Aeronautics and Astronautics
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,137
OpenAlex ID: W4407627457