无机材料学报2022，Vol.37Issue(6)：683-690,8.DOI:10.15541/jim20210652
Al-Ti合金钎焊SiC陶瓷接头界面微观结构与力学性能
Microstructure and Mechanical Properties of SiC Joint Brazed by Al-Ti Alloys as Filler Metal
摘要
Abstract
SiC ceramic has excellent overall properties, and joining it to other materials with high joint strength is an important issue in the actual applications. Brazing of SiC ceramic to itself was performed using the as-fabricated Al-(10, 20, 30, 40)Ti alloys with nominal Ti concentrations of 10％, 20％, 30％, and 40％ at 1550 ℃ × 30 min. The average joint shear strength fluctuates in the range of ～100–260 MPa with the interlayer thickness of ～50 μm. Moreover, the average strength SiC/Al-20Ti/SiC joint is increased markedly with the interlayer thickness decreasing from ～100 to 25 μm, reaching the maximum of ～315 MPa. Meanwhile, the (Al) phase in the interlayers is reduced gradually till disappear with the thinnest brazing interlayer, leaving the Al4C3, TiC and (Al,Si)3Ti phases in the interlayer. The joint fractures of SiC/Al-20Ti/SiC joint mainly occur in the SiC ceramic substrate near the interlayer/ceramic interface.关键词
SiC/钎焊/界面/微结构/力学性能Key words
SiC/brazing/interfaces/microstructures/mechanical property分类
矿业与冶金引用本文复制引用
徐谱昊,张相召,刘桂武,张明芬,桂新易,乔冠军..Al-Ti合金钎焊SiC陶瓷接头界面微观结构与力学性能[J].无机材料学报,2022,37(6):683-690,8.基金项目
National Natural Science Foundation of China(52002153,51572112) （52002153,51572112）
Natural Science Foundation of the Jiangsu Higher Education Institutions of China(20KJB430004) （20KJB430004）
Key R&D Plan of Jiangsu Province(BE2019094) （BE2019094）
