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Ni-Fe-SiC alloy is a promising material in the fabrication of micro actuator. Electrolytic codeposition technique was adopted in the deposition of Ni-Fe-SiC composite coating on stainless steel substrate, using nickel alloyed with iron as the binder phase and SiC as dispersed particles. The morphology analysis indicated that the deposit with SiC nanoparticles is level and compact and the crystal-planes...
This paper presents an optimized Cu-Ni nanocomposite coil synthesized based on the trade-off of resistivity and permeability of the nanocomposite for low-power electromagnetic microspeaker fabrication. A 200 mum wide composite coil plated in an alkaline noncyanide copper based bath that is added with 2 g/L of Ni nanopowders can realize ~40% power saving of the speaker performed in a frequency range...
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...
Possibilities of the method of obtaining metal powders by means of thermal decomposition (or reduction) of their compounds during heating in a medium of a high-boiling organic liquid were investigated. A distinguishing feature of the approach proposed is the use of benzyl alcohol as the liquid medium, while the initial metal carboxylates with different lengths of the methylene chain were formates,...
This paper presents a Cu-Ni nanocomposite film and related CMOS compatible fabrication process using alkaline noncyanide based copper plating solution for low power magnetic microactuation application. The magnetic properties of Cu can be modified from diamagnetism to ferromagnetism via the incorporation of Ni nanoparticles into a Cu matrix to form a Cu-Ni nanocomposite film. Experimental results...
The present study investigates the effects of high voltage impulses and low frequency high current pulses on Ni powder compacts and on alloys like Ni80Si20 or Ni95Si5. An increase in density has been observed due to pulse application on samples of ball milled Ni powder and Ni80Si20. It is suggested that pulse application along with simultaneous pressure application be employed in field assisted sintering...
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