公开(公告)号：EP4344818A1

公开(公告)日：2024-04-03

申请号：EP22874796.0

申请日：2022-09-23

Applicant: BYD Company Limited

Inventor： ZHOU, Wei ,  ZHU, Yiming ,  XU, Qiang ,  ZHAO, Wenyan ,  LI, Xiayang

IPC: B23K35/24 ,  B23K35/30 ,  C04B37/02

Abstract: Disclosed are an active metal brazing paste composition, a brazing paste and a method for brazing ceramics and metals. The composition includes a binder and metal powder. The metal powder includes active metal brazing powder and brazing-aid metal powder. The brazing-aid metal powder contains copper powder and/or copper-silver alloy powder. The active metal brazing powder is alloy powder containing copper, silver, and an active metal. With the total weight of the metal powder as a reference, the content of the active metal is 1.5 wt% or more, the content of silver is 40 wt% to 90 wt%, and the content of oxygen is 0.5 wt% or less.