A novel high-performance Bi-based glass-Al2O3 composite system for LTCC applications

IF 3.8 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of the American Ceramic Society Pub Date : 2025-07-30 DOI:10.1111/jace.70157

Lin Gan, Yujie Huang, Juan Jiang, Jinzhao Wang, Tianjin Zhang

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Abstract

A novel high-performance Bi-based glass-Al₂O₃ composite material was successfully developed for low-temperature co-fired ceramic (LTCC) applications. The compositional effects of the binary glass of Bi₂O₃-ZnO-B₂O₃-Al₂O₃ (BZBA)+CaO-B₂O₃-SiO₂ (CBS) on the phases, microstructures, microwave dielectric properties, and densification mechanism of the 45 wt% glass-55 wt% Al₂O₃ composite specimens were systematically studied. The optimal glass composition that could yield a high relative density (98.2%) and superior dielectric properties (ε_r= 8.7 and tanδ = 1.2 × 10⁻³) was confirmed to be 32.5 wt% BZBA+12.5 wt% CBS. Furthermore, based on the optimized composition, a complete fabrication process of the glass-Al₂O₃ composites by tape casting was performed, the sample was found to simultaneously have a low dielectric loss (1.0 × 10⁻³), a high mechanical strength level (300 MPa), a high thermal conductivity (4.25 W/m·K), and outstanding chemical compatibility with Ag electrode. The results indicate that the sample of 32.5 wt% BZBA+12.5 wt% CBS-55 wt% Al₂O₃ is a promising candidate material for LTCC applications.

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一种用于LTCC应用的新型高性能铋基玻璃- al2o3复合体系

成功开发了一种新型高性能铋基玻璃- al2o3复合材料，用于低温共烧陶瓷（LTCC）。系统研究了Bi2O3-ZnO-B2O3-Al2O3 (BZBA)+CaO-B2O3-SiO2 （CBS）二元玻璃对45 wt% glass-55 wt% Al2O3复合试样的物相、显微组织、微波介电性能及致密化机理的影响。最佳玻璃组成为32.5 wt% BZBA+12.5 wt% CBS，可获得较高的相对密度（98.2%）和优越的介电性能（εr = 8.7, tanδ = 1.2 × 10−3）。在此基础上，采用胶带浇铸法制备了完整的玻璃- al2o3复合材料，样品具有低介电损耗（1.0 × 10−3）、高机械强度（300 MPa）、高导热系数（4.25 W/m·K），与Ag电极具有良好的化学相容性。结果表明，32.5 wt% BZBA+12.5 wt% CBS-55 wt% Al2O3的样品是LTCC应用的有希望的候选材料。

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来源期刊

Journal of the American Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

7.50

自引率

7.70%

发文量

590

审稿时长

2.1 months

期刊介绍： The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials. Papers on fundamental ceramic and glass science are welcome including those in the following areas: Enabling materials for grand challenges[...] Materials design, selection, synthesis and processing methods[...] Characterization of compositions, structures, defects, and properties along with new methods [...] Mechanisms, Theory, Modeling, and Simulation[...] JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.