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YANG Jing, XUE Peng, ZHANG Yongfeng, FANG Xu, JIANG Chenyu, SHI Kai. Microstructure and properties of boron carbide ceramic brazed joints with high nitrogen steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2024, 45(5): 113-118. DOI: 10.12073/j.hjxb.20230601001
Citation: YANG Jing, XUE Peng, ZHANG Yongfeng, FANG Xu, JIANG Chenyu, SHI Kai. Microstructure and properties of boron carbide ceramic brazed joints with high nitrogen steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2024, 45(5): 113-118. DOI: 10.12073/j.hjxb.20230601001

Microstructure and properties of boron carbide ceramic brazed joints with high nitrogen steel

  • The reliable joining between B4C ceramic and high nitrogen steel was obtained using Ag-Cu-Ti filler metal. The wettability and spreadability of Ag-Cu-Ti filler metal with different Ti contents on B4C ceramics and high nitrogen steel were studied, as well as the microstructure and shear strength of brazed joints were investigated. The results indicated that when the Ti content reaches 4.5wt%, the filler metal possess better wettability and spreadability effect on both B4C ceramics and high nitrogen steel. The result of microstructure analysis indicated that TiC and TiB exist in the microstructure of brazing joints along ceramic side, while TiFe2, TiN and CuTi2 exist along steel side. As a result, the maximum shear strength of brazed joint reached 54 MPa,.
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