نتایج جستجو برای: ni3al intermetallic
تعداد نتایج: 4021 فیلتر نتایج به سال:
In situ X-ray photoelectron spectroscopy and low-energy ion scattering were used to study the preparation, (thermo)chemical and catalytic properties of 1:1 PdGa intermetallic near-surface phases. Deposition of several multilayers of Ga metal and subsequent annealing to 503-523 K led to the formation of a multi-layered 1:1 PdGa near-surface state without desorption of excess Ga to the gas phase....
Intermetallic compounds are garnering increasing attention as efficient catalysts for improved selectivity in chemical processes. Here, using a ship-in-a-bottle strategy, we synthesize single-phase platinum-based intermetallic nanoparticles (NPs) protected by a mesoporous silica (mSiO2) shell by heterogeneous reduction and nucleation of Sn, Pb, or Zn in mSiO2-encapsulated Pt NPs. For selective ...
Related Articles Size-dependent transition of deformation mechanism, and nonlinear elasticity in Ni3Al nanowires Appl. Phys. Lett. 102, 041902 (2013) Local magnetization profile and geometry magnetization effects in microwires as determined by magneto-optical Kerr effect J. Appl. Phys. 113, 043904 (2013) Streak spectroscopy and velocimetry of electrically exploded Ni/Al laminates J. Appl. Phys....
The need of a concerted multi-disciplinary approach in the investigation of intermetallic systems and the role of thermochemistry are underlined. The activity carried out in the Author’s laboratory in the alloy thermodynamics is summarized. The different instruments (calorimeters) built in laboratory are briefly presented and their performance discussed. The results obtained in the measurement ...
A new method is proposed for estimating the enthalpies of formation of L12 (fcc-ordered) intermetallics from the heat release measured during ordering of their disordered polymorphs. The method is applied to Cu3Au, Ni3Al, and Ni3Si. The resulting estimates of enthalpies of formation are close to values obtained by high temperature dissolution calorimetry. They also appear to be more precise tha...
This investigation was conducted to ascertain the benefits of electropolishing after mechanical polishing for electron backscattered diffraction of a Ti 2 AlNb intermetallic Ti − 21Al − 29Nb (at.%) alloy containing the orthorhombic (O) and body-centered-cubic (BCC) phases. Electropolishing was performed at − 40 ° C in 6% H 2 SO 4 methanol solution. Atomic force microscopy was used to measure th...
Effect of MoO3 Content on Ni3Al-Ag-MoO3 Composite Coating Microstructure and Tribological Properties
In order to provide effective solid lubrication Ni3Al coating, 10 wt.% Ag and different amounts of MoO3 lubricant were mechanically mixed with the SHSed powder sprayed HVOF. Microstructure, mechanical properties, tribological behavior from 25 °C 800 coatings studied, basic wear mechanisms explored discussed as well. Results show that hardness adhesive bonding strength are slightly decreased, wh...
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