Diffusion bonding of stainless steel to Zircaloy-4 in the presence of a Ta intermediate layer

Cracking during solidification of diffusion bonded Inconel 625 in the presence of Zircaloy-4 interlayer

“…It indicates that the layers act as barrier against the diffusion of Zr towards the Inconel 625. This is in accordance with the observations reported by researcher [12,17].…”

“…Interlayer with high temperature stability such as Ta and Ni have been investigated for the diffusion welding of titanium alloy IMI 829 with Fe-Ni alloy [11] whereas 304L stainless steel and 316L have been joined with Zircaloy-4 using Ta and Ti as an intermediate layer, respectively [12,13]. Sputtered deposited metal film of titanium on alumina has been observed to result higher bond strength and lower joining temperature for its diffusion welding with Inconel 600 [14].…”

Formation of dendritic structure in the diffusion zone of the bonded Zircaloy-4 and stainless steel 316L in the presence of Ti interlayer

“…5. Such Cr-rich layer has also been observed by the many researchers [6,13,18,19] in the diffusion-bonded stainless steel with Zircaloy-4. This layer acts as a barrier against the diffusion of Ti and Zr towards the SS-316L.…”

Performance of FCCI barrier foils for U–Zr–X metallic fuel

“…There are many candidate materials for a diffusion barrier other than Zr and V. Refractory metals such as Nb, Mo and Ta have been widely used as diffusion barrier materials [16][17][18]. In this study, the diffusion barrier performances of various metallic layers were compared by out-of-pile diffusion couple tests.…”