Application of composite binders in the fabrication of LTCC green tape based on the borosilicate glass/Al2O3 system with optimized Ca/Mg ratios
Application of composite binders in the fabrication of LTCC green tape based on the borosilicate glass/Al2O3 system with optimized Ca/Mg ratios
复制标题
复合粘合剂在优化钙镁比硼硅玻璃/Al2O3体系LTCC生带制造中的应用
DOI：
10.1016/j.ceramint.2020.07.087
复制
发表时间：
2020
影响因子：
5.2
通讯作者：
Hongqing Zhou
中科院分区：
文献类型：
--
作者：
Luchao Ren;Mingwei Zhang;Hongqing Zhou
以硼硅酸盐玻璃/Al 2 O3体系为基础，研制了一种具有良好烧结特性和介电性能的高性能低温共烧陶瓷（LTCC）绿色生坯带。首先，优化玻璃组合物中的Ca/Mg比率以改变微结构、烧结密度和介电性质。随后，在流延浆料中使用各种分子量的复合粘合剂，以改善绿色带的性能。在对多个必要的性能参数进行综合分析后，我们得出结论，在875 °C下烧结的Ca/Mg = 4.30的玻璃/Al 2 O3复合材料呈现出致密的微观结构，具有出色的烧结特性和介电性能（密度为3.14 g/cm 3，介电常数为8.02，介电损耗为11 × 10−4（10 MHz））。应用具有60%B20H和40%B79的复合粘合剂产生了具有高密度（1.94 g/cm 3）、光滑表面（Ra = 213 nm）和良好可加工性的绿色带。此外，优化的复合材料的热性能和机械性能是实用的电子封装应用。这种积极的评估复合材料和银电极之间的共烧兼容性增强其应用潜力的LTCC技术。
This study aimed at developing a high-performance low temperature co-fired ceramic (LTCC) green tape with good sintering characteristics and dielectric properties based on a borosilicate glass/Al2O3system. First, the Ca/Mg ratio in the glass composition was optimized to modify the microstructure, sintering density, and dielectric properties. Subsequently, composite binders of various molecular weights were employed in the tape casting slurries, to improve the performance of the green tapes. Following a comprehensive analysis of the multiple necessary performance parameters, we concluded that the glass/Al2O3composite with Ca/Mg = 4.30 sintered at 875 °C presented a dense microstructure with outstanding sintering characteristics and dielectric properties (density of 3.14 g/cm3, permittivity of 8.02 and dielectric loss of 11 × 10−4(10 MHz)). The application of composite binders with 60% B20H and 40% B79 yielded a green tape with a high density (1.94 g/cm3), smooth surface (Ra = 213 nm), and good workability. In addition, the thermal and mechanical properties of the optimized composite were practical for electronic packaging applications. This positive assessment of the co-firing compatibility between the composite and Ag electrodes augments its application potential for LTCC technology.