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WETTING and JOINING of HfB2 and Ta with Ni


The wetting behavior of Ni on a HfB2/Ta assembly was examined in vacuum using dense HfB2 (99.5% purity) produced, without sintering aids, by HP-HT at 7 GPa. The real-time imaging by a high res...

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The influence of the drop-size effect on the wetting kinetics in SAC305/Ni system


The studies of the drop-size effect on the wetting kinetics of the nickel substrate by lead-free solder were performed by the sessile drop method in a vacuum at a temperature of 260°C.In this work, Sn-based alloy SAC305 (Ag - 3.0 wt. %, ...

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Thermal conductivity of carbon-reinforced metal-matrix composites


The paper presents a critical analysis of the current state-of-the-art thermo-physical properties of metal composite materials, in which different types of carbon reinforcing phase have been used: graphite, diamond, carbon fibres, carbon nanotubes...

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Effect of energy mix on the phenomenon of agglomeration of non-metallic inclusion particles in liquid steel


In the research, computer calculations were performed, consisting in solving the equation of population balance and the equation of the collision frequency of non-metallic inclusion particles, depending on the type of collision. In the simulations...

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Technical and economic aspects of technological conversion of Ni-based superalloys working in extreme conditions


The essence of the conversion process is the introduction of innovative in terms of materials and technology of cast parts, as components of manufactured machines and equipment in place of the traditional elements forged, welded, mechanically asse...

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