All kinds of brazing joints formed by ceramic metallization, because of the existence of coating or coating, restrict the use of ceramic components at high temperature. It is difficult to give full play to the superiority of high temperature stability of ceramics. It requires people to find a direct brazing method.
Direct brazing of ceramics can solve the problem of connection of parts that can not be metallized completely because of blind hole or geometric dimension factors. It can greatly simplify the brazing process and meet the requirements of high temperature use of ceramic components. This method uses brazing fillers containing Ti or Zr active elements to braze ceramics directly with metals, ceramics and ceramics, ceramics and graphite.