“…Due to the inaccuracy of EDS analysis of light elements, B and C elements are not presented in the table. At the ZSC side, combining the EDS results with prior results [19,33,34], it can be inferred that, a Zr 2 Si layer (point A) and a thin Ti 3 SiC 2 layer (point B) form on the ceramic surface. The bulk of the braze seam has eutectic structure, which consists of Ag-rich solid solution (denoted as Ag (s, s) for convenience) (point C) and Cu-rich solid solution (denoted as Cu(s, s) for convenience) (point D).…”