Patent ID: 8563142

Claim:
A dual brazing alloy element, consisting essentially of: a first layer including (i) a Ni-based brazing alloy having a Ni content of at least 50% by weight and (ii) at least one component which lowers a melting point of the Ni-based brazing alloy selected from the group consisting of Si, B, Mn, Sn, and Ge; and a second layer including an active brazing alloy material having a total content of 1-15% by weight of at least one active element selected from the group consisting of Ti, Hf, Zr, and V, wherein the dual brazing alloy element is suitable to provide a materially integral connection of a ceramic surface to a metallic surface, wherein the first layer is configured to contact the metallic surface, wherein the second layer is configured to contact the ceramic surface, wherein a first layer melting point is in a range of from 900 to 1150° C., wherein a second layer melting point is in a range of from 700 to 1000° C., and wherein the first layer melting point is in a range of from 30 to 200° C. higher than the second layer melting point.