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The mechanical properties of nanoparticles (either Mo-Ni or SiC) reinforced Mo-Ni brazes were studied by microindentation. It was noticed that: (i) for MoNi near-eutectic fillers doped with 3% and composed of 100% Mo-Ni nanoparticles the non-eutectic phase features consistently a larger hardness than the eutectic phase. Fillers with various additions of Mo-Ni nanoparticles respond differently to the...
This paper offers an insight into a comprehensive study of liquid nano-composite braze filler spreading during bonding of porous tungsten to molybdenum. The considered application involves structural elements of a dispenser cathode. A new formulation of Mo-Ni filler doped with SiC nano-particles has been analyzed. The study involves a high temperature brazing in controlled atmosphere (N2+H2). The...
Flow of molten filler metal during high temperature brazing is a critical phenomenon in materials processing essential for dispenser cathode manufacturing. The presence of nano-particles in filler composite materials may impact resulting bond properties and joint integrity. This paper offers an insight into a new study of joint formation and behavior of the Mo/Ni braze filler doped by Mo/Ni nano-particles.
Spreading of molten metal during high temperature brazing of molybdenum-rhenium substrates by molybdenum-nickel fillers is a critical phenomenon in materials processing essential for dispenser cathode manufacturing. Presence of nano-particles in composite materials may impact resulting bond properties and joint integrity. This paper offers an insight into a study of spreading of the Mo/Ni braze filler...
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