Cobalt-nickel (Co-Ni) binary alloy nanowires of different compositions were co-deposited in the nanopores of highly ordered anodic aluminum oxide (AAO) templates from a single sulfate bath using alternating current (AC) electrodeposition. AC electrodeposition was accomplished without modifying or removing the barrier layer. Field emission scanning electron microscope was used to study the morph...

The effects of Nb and Pd on the electrochemical properties of a Ti-Ni hydrogen-storage electrode are studied. The results show that adding Pd or Nd to the alloy can slow down the rate of decay of the exchange current during charge-discharge cycling and is also useful in increasing the discharge capacity and cycle life of Ti-Ni electrodes. CC 1998 Elsevier Science S.A. Kqword.c: Alloy; Hydrogen ...

intermetallic phase formation and oxidation reaction during combustion synthesis (cs) of ni-ti equiatomic mixture are affected by mechanical activation (ma) and pre-heating conditions. important parameters are ignition time, reaction duration, temperature rise, microstructural change, titanium oxidation and intermetallic phase formation. superelasticity and shape memory effects are influenced b...

To reduce costs and improve high-temperature performance in Advanced Ultra Super Critical (AUSC) boilers, it is necessary to weld austenitic steel Inconel alloy. In this study, the autogenous tungsten inert gas (TIG) welding process was used join Alloy 617 an AISI 304H plate of thickness 5 mm. Microstructural analysis showed that microstructure formation uneven along weldments, with columnar ce...

Small-angle neutron scattering ( SANS ) measurements were mainly carried out in order to investigate the structure change during early stage of phase decomposition in Fe-Cu-Ni-Mn quaternary alloy. The fact that the nuclear Guinier radius becomes larger than the magnetic one beyond about 2 nm is attributed to the formation of segregated layer enriched by Ni and Mn around fcc copper-rich precipit...

It is considered as a challenge for RABiTS route to get cube textured Ni-W alloy substrates with high mechanical and magnetic properties for coated conductors. The works of our group in recent years are summarized about different Ni-W substrates with high W content and composite tapes made by RABiTS technique. The fabrication process and the mechanism of cube texture formation in above differen...

In this report, vulcan XC-72 supported PtNi alloy catalyst nanoparticles were synthesized by electroless deposition method using NaBH4 as a reduction agent. The properties of the synthesized Pt-Ni/C catalysts were investigated and evaluated. Transmission electron microscopy (TEM) results showed that PtNi alloy catalysts dispersed well on the carbon supports and their particle size was in the ra...

Amorphous Ni–Ag films were obtained on liquid nitrogen cooled Si substrates using DC magnetron sputtering. A series of magnetic and magneto-transport property measurements confirm that the film with Ni to Ag atomic ratio of 60:40 is an alloy of the two elements immiscible in equilibrium, with atomic-level intermixing. The magnetic properties of the new alloy are discussed in comparison with tho...

In this study we present a series of light-weight (6.24 to 6.42 g/cm3), Ti-rich Mo-Si-Ti alloys (?40 at.% nominal Ti content) with the hitherto best combination pesting and creep resistance at 800 1200 °C, respectively. This has been achieved by fine-scaled eutectic-eutectoid microstructures substantial fractions primarily solidified (Mo,Ti)5Si3. (Mo,Ti)5Si3 was found be oxidation-resistant in ...

Aluminum and aluminum alloys can be protected against corrosion by various methods of surface modification (e.g., metal finishing, anodizing, chromate conversion coatings, metallic cladding with Alclad, corrosion protection compounds, and solution phase inhibitors). The desire to deploy environmentally compliant multi-functional coatings has created the need for new concepts that can protect Al...