Abstract To focus on the interfacial reaction between Ag–Cu alloy layer and TiN in active metal brazing, brazed structures Cu two types of sintered ceramics fabricated by different methods were examined. No grain boundary phase components consisting Ni-containing Fe or Mo 2 C detected surfaces liquid-phase ceramic bonding before brazing. The specimens heated at 850 °C for 0.5 h. Cu/TiN solid-ph...

This paper investigates the effects of brazing temperatures on microstructure and compressive strength for porous nickel to copper stainless steel using VZ2250 as filler metal. A high vacuum furnace is used braze samples. Three different process parameters were set with a heating cooling rate 10°C/min, respectively. The characteristics joint interface have been investigated evaluate performance...

Experiments were performed to study the flow characteristics of ethanol and methanol flow in rectangular micro-channels using test models 1 and 2 (TM1, TM2). The TM1 and TM2 used were of 47 and 50 micro-channels in rectangular crosssection of equivalent diameters of 387 and 327 m respectively. The channel length of 192 mm were fabricated on a 304 stainless steel substrate (230 mm x 160 mm x 1....

A four stage asymmetric type depressed collector has been designed for the Israeli mm-wave FEM that is driven by a 1.4MeV, 1.5A electron beam. After leaving the interaction section the spent beam has an energy spread of 120 keV and 75pmmmrad normalized beam emittance. Simulations of the beam transport system from the undulator exit through the decelerator tube into the collector have been carri...

PPM focusing is quite an attractive scheme, since it eliminates the focusing solenoid (and its power supply) from the klystron. However, one technical difficulty lies in how to integrate the magnetic-circuit, which is relatively complicated, into the vacuum tube. We have solved this problem by introducing a new fabrication technique of metal-to-metal diffusion-bonding by hot-isostatic-pressing ...

Abstract Recently, the integration of a maraging steel heat treatment into vacuum brazing has been conducted successfully to manufacture high-strength and sound cemented carbide-steel joints with elevated mechanical properties component. Besides use low-melting silver-based active filler alloys cost-intensive palladium-containing alloys, application nickel layer on surface by an arc-PVD process...