The joining of the SiC_f/SiBCN composite was difficult due to the undue reactions between the SiC_f/SiBCN composite and the common Ni- or Co-based filler alloy. In this paper, a new filler alloy with the nominal composition of Co-20Ni-12Pd-18Nb-15Cr (wt.%) was newly designed to join the SiC_f/SiBCN composite. Compared with the BNi-5 filler alloy, the periodic banded structure in the reaction layer was eliminated. During the brazing process, the element Cr played an active role in the interfacial reactions and formed Cr₂₃C₆ layer at the surface of the SiC_f/SiBCN composite. The interfacial reaction layer could inhabit the diffusion of the elements Co and Ni to the SiC_f/SiBCN substrate. And then the interfacial reactions were controlled well. Under the brazing condition of 1200 °C/10 min, the average joint strength was increased from 18.2 to 54.9 MPa.

在SiC的接合_˚F / SiBCN复合很难由于在SiC之间的过分反应_˚F / SiBCN复合物和共同Ni或Co基合金填料。在本文中，新设计了一种标称成分为 Co-20Ni-12Pd-18Nb-15Cr (wt.%) 的新型填充合金，用于加入 SiC _f /SiBCN 复合材料。与BNi-5填充合金相比，消除了反应层中的周期性带状结构。在钎焊过程中，元素Cr在界面反应中起积极作用，并在SiC _f /SiBCN复合材料表面形成Cr ₂₃ C ₆层。界面反应层可以抑制 Co 和 Ni 元素向 SiC _f的扩散/SiBCN 衬底。然后界面反应得到很好的控制。在 1200℃/10 min 的钎焊条件下，平均接头强度从 18.2 MPa 增加到 54.9 MPa。