Low-temperature brazing of SiCp/Al composites with Bi2O3-B2O3-ZnO-SiO2-Al2O3 glass in air

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Materials Characterization Pub Date : 2025-03-13 DOI:10.1016/j.matchar.2025.114932

Duo Liu , Rui Jiang , Yanyu Song , Naibin Chen , Tao Wang , Hong Bian , Wei Fu , Baoqiang Wang , Xiaoguo Song

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Abstract

In this study, low-melting Bi₂O₃-B₂O₃-ZnO-SiO₂-Al₂O₃ (BBZSA) glass was adopted to braze SiC_p/Al composite, and the effects of brazing temperature and holding time on the microstructure and mechanical properties of the SiC_p/Al joint were investigated. The BBZSA glass started to spread and wet on the surface of SiC_p/Al composite at the temperature of 480 °C. The typical microstructure at this temperature was SiC_p/Al + Bi₂O₃-B₂O₃-ZnO glass + Bi₂₄B₂O₃₉ + Si₂Al₂O₇ + SiO₂, and the interface was bonded by the intermolecular force between the Bi₂O₃-B₂O₃-ZnO (BBZ) glass and SiC_p/Al composite. Besides, the precipitation of the Bi₂₄B₂O₃₉ phase improved the mechanical properties of the joint with a maximum strength of 17.3 MPa, and the fractures all occurred in the Bi₂O₃-B₂O₃-ZnO (BBZ) glass of the brazing seam. The proof-of-concept study on the brazing of SiC_p/Al composite with BBZSA glass provides insights in the further development of ceramic/metal composite joining.

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Bi2O3-B2O3-ZnO-SiO2-Al2O3玻璃在空气中低温钎焊SiCp/Al复合材料

本研究采用低熔点Bi2O3-B2O3-ZnO-SiO2-Al2O3 （BBZSA）玻璃钎焊SiCp/Al复合材料，研究了钎焊温度和保温时间对SiCp/Al接头组织和力学性能的影响。在480℃时，BBZSA玻璃开始在SiCp/Al复合材料表面扩散和湿润。该温度下的典型微观结构为SiCp/Al + Bi2O3-B2O3-ZnO玻璃+ Bi24B2O39 + Si2Al2O7 + SiO2，界面由Bi2O3-B2O3-ZnO （BBZ）玻璃与SiCp/Al复合材料之间的分子间作用力形成。此外，Bi24B2O39相的析出改善了接头的力学性能，最大强度达到17.3 MPa，且断裂均发生在钎缝的Bi2O3-B2O3-ZnO （BBZ）玻璃上。SiCp/Al复合材料与BBZSA玻璃钎焊的概念验证研究为陶瓷/金属复合材料连接的进一步发展提供了见解。

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来源期刊

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.