Thermophotovoltaic (TPV) energy conversion is appealing for portable millimeterscale generators because of its simplicity, but it relies on a high temperatures. The performance and reliability of the high-temperature components, a microcombustor and a photonic crystal emitter, has proven challenging because they are subjected to 1000–1200◦C and stresses arising from thermal expansion mismatches...

The improved yield strength of annealed dispersionstrengthened copper (DSC) over conventional OFE copper makes it a possible candidate for use in extremely high potential gradient particle accelerator structures where stability is of critical importance. Test brazes of such structures show that the surface of DSC is not readily wetted by conventional goldbased braze alloys used for copper. Surf...

Titanium and Zircaloy-4 dissimilar alloys were brazed with a zirconium-titanium-copper-nickel amorphous filler alloy, the resulting joint structures as well their corrosion properties examined. The microstructure of joints was investigated according to brazing holding time at 850 °C, property analyzed by potentiodynamic polarization. During brazing, produced diffusion-induced isothermal solidif...

For the high-power modules packaging, Cu clip bonding has gained growing interest to replace multiple wire-bonding for benefits of lower resistance and improved thermal performance, which is especially beneficial higher reliability. However, current interconnection materials processes cannot fully meet reliability requirements emerging integrated structure. Brazing alloys can serve in high-temp...

Brazing joints of Ti/Ti under ultrasonic vibration (USV) and compression load were investigated using optimized modified filler alloys Al-Si-Cu-(Ni)-(Sr) group prepared in the lab. Preliminary trails at semisolid to liquid states conducted ready Al-Si-Cu-(Mg) alloy as a filler, then brazing cycle was redesigned enhanced according microstructural observations produced joints. USV assisted state ...

An Al-40.0Ge-3.4Si wt.% alloy foil with a thickness of 50 ± 5 μm, obtained via an ultrafast solidification method, is described in this work. A complete wetting the aluminum substrate angle 0° observed, and formation drop 30 5° observed on steel substrate. Similar dissimilar brazed joints AA 6082 stainless-steel AISI 304 are obtained. The microstructure 6082/AA seam homogeneous contains particl...