Bonding of alumina to steel using copper interlayer

About the Structure Cu-Al2O3 Joints Obtained by Diffusion Bonding

“…Data concerning the structure of interface are contradictory. There are two opposing theories in the literature: firstly, that the bond has a clear diffusion character [3][4][5][6]; secondly, that the reaction character of the bond is assumed [7][8][9][10][11][12][13][14][15][16].…”

Brazing of ZrB2–SiC–C ceramic and GH99 superalloy to form reticular seam with low residual stress

“…Prior research has demonstrated the feasibility of Cu foil as the ductile interlayer for brazing [29][30][31]. Therefore, a further brazing of ZSC and GH99 using Ag-Cu-Ti filler alloy with Cu foil interlayer was performed.…”

“…The use of conventional ductile Ag-Cu-Ti filler alloy to join ZrB 2 base ceramics [19], and the insertion of a soft metal foil like Cu between matrix materials as a ductile interlayer have previously been demonstrated [28][29][30]. Nevertheless, the original ductile brazes seam can be hardened by the brittle compounds generated by excessive interfacial reactions, which could hinder the residual stress relief and is unfavorable for the brazed joint [31,32].…”

Analysis of hydro-mechanical deep drawing and the effects of cavity pressure on quality of simultaneously formed three-layer Al alloy parts

“…Whereas, today's modern applications may need more versatile parts having more number of metal and resin/ composite layers as well as demand more freedom to use a variety of available resins to get customized hybrid characteristics. Some two layer blank forming studies are also available in literature using stamp forming and HDD methods [21][22][23][24] which mainly were purposed for producing functionally gradient structures (FGSs) for better corrosion resistance and different electrical conductivity, wear resistance, sound and vibration damping, and uniform temperature distribution in various layers [25,26]. For example, bimetallic drawn cups were made using a combination of aluminum and steel sheets and various process parameters such as blank holding force, lay up sequencing and orientation, thickness of formed parts were studied [27][28][29][30].…”