Hi , welcome to visit !

News

  1. Home
  2. High Energy Intermetallic

High Energy Intermetallic

2020-6-2A low-cost, high-performance multinary intermetallic compound as an active electrocatalyst for hydrogen production. by City University of Hong Kong

In-situ High-energy X-ray Diffraction on an

Abstract. In-situ high energy X-ray diffraction is a powerful technique to investigate the structure of a material in a dynamic setup. In the present work, the technique was used to study an intermetallic TNM alloy with an increased content of -stabilising alloying elements Nb and Mo.

Consideration of kinetics on intermetallics formation

Let us first draw a free energy-temperature diagram, as shown in Fig. 1, to demonstrate the intervention of kinetics during the thermodynamic determination of phase formation.When an alloy is solidified from melt, immediately across the liquid-solid boundary, T m, the distribution of constituent elements is, in principle, chemically random .In other words, the solidified alloy would be in a ...

HighPerformance Ordered PdCuFeC Intermetallic

HighPerformance Ordered PdCuFeC Intermetallic Catalyst for Electrochemical Oxygen Reduction in Proton Exchange Membrane Fuel Cells Article in ChemElectroChem 612 May 2019 with 38 Reads

Highly Active and Durable Ordered Intermetallic PdFe ...

2020-5-26In this paper, we report the preparation of a highly active and durable ordered intermetallic PdFe catalyst supported on carbon black for formic acid oxidation reaction FAOR by high-temperature heat treatment under a reductive atmosphere. We found that the ordered intermetallic PdFe catalyst exhibited considerably better catalytic activity and durability toward FAOR than the disordered PdFe ...

High-efficiency electrochemical hydrogen evolution

High-eciency electrochemical hydrogen evolution based on the intermetallic Pt2Si compound prepared by magnetron-sputtering Yuchan Zhu, Min Yuan, Li Deng, Ruoxi Ming, Ailian Zhang, Ming Yang, Bo Chai and Zhandong Ren The development of highly active and stable electrocatalysts for the hydrogen evolution reaction HER is

Cerium-Based, Intermetallic-Strengthened Aluminum

Several rare earth elements are considered by-products to rare earth mining efforts. By using one of these by-product elements in a high-volume application such as aluminum casting alloys, the supply of more valuable rare earths can be globally stabilized. Stabilizing the global rare earth market will decrease the long-term criticality of other rare earth elements. The low demand for Ce, the ...

First principles calculation of intermetallic compounds in ...

2012-6-29high entropy alloy were investigated by the first principles calculation. The calculation results of formation enthalpy and cohesive energy show that FeTi, Fe 2 Ti, AlCrFe 2 , Co 2 Ti, AlMn 2 V and Mn 2 Ti phases may form in the formation process of the alloy.

Isolated Single-Atom Pd Sites in Intermetallic ...

2019-5-25Improving the catalytic selectivity of Pd catalysts is of key importance for various industrial processes and remains a challenge so far. Given the unique properties of single-atom catalysts, isolating contiguous Pd atoms into a single-Pd site with another metal to form intermetallic structures is an effective way to endow Pd with high catalytic selectivity and to stabilize the single site ...

Effects of isothermal aging on interfacial microstructure ...

2020-6-17The growth mechanism of interfacial intermetallic compounds was then examined, and activation energy was estimated to 95.4 kJmol. In turn, shear strength of solder joints declined and fracture mode became brittle as aging time and temperature increased.

Effect of High-Energy Ball Milling on Structure and ...

Effect of High-Energy Ball Milling on Structure and Properties of Some Intermetallic Alloys A Mini Review Fatma Hadef 1 Metallography, Microstructure, and Analysis volume 8 ,

Theoretical Energy Release of Thermites, Intermetallics ...

Thermite mixtures, intermetallic reactants, and metal fuels have long been used in pyrotechnic applications. Advantages of these systems typically include high energy density, high combustion ...

High-Energy Ball-Milling of FeAl2 and Fe2Al5

In this study, FeAl2 and Fe2Al5 intermetallic alloys were prepared by conventional casting technique. In order to study their structural stability the alloys were subjected to high-energy ball milling process for 1, 2.5, 5 and 10 h. The structural and chemical characterizations were conducted by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and differential ...

Investigating the activation energy of intermetallic

The HTSL testing was carried out for up to 1500 hours. In every 500 hours, samples were taken out from the test to measure the thickness of the intermetallic layer by analysing cross-sections with Scanning Electron Microscopy. It was found that the determined value of activation energy is influenced by the length of the HTSL testing.

Metall-intermetallic laminated composites, produced by ...

2017-6-20Metall-intermetallic laminated composites, produced by explosive welding and heat treatment ... His research interest is materials science aspects of high speed and high energy phenomenon, including explosive welding, high-strain-rate deformation, ...

Antimony-based intermetallic compounds for lithium-ion

2017-9-13rials with high energy densities and power densities for batteries has been actively pursued to satisfy the power demands for electronic devices and hybrid electric vehi-cles. Recently, antimony Sb-based intermetallic com-pounds have attracted considerable research interests as new candidate anode materials for high-performance

Intermetallics - Journal - Elsevier

2 This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys.

Fundamental Properties of Intermetallic Compounds

Fundamental Properties of Intermetallic Compounds Morihiko Nakamura Introduction More than 25 years have passed since Intermetallic Compounds, edited by Westbrook,1 was published. Since that time, enormous advances have been made in the understanding and usage of intermetallic compounds. It is known that intermetallic compounds are gener-al ly ...

Novel, High Energy Density Intermetallic Anode

2020-5-20The best synthetic method will be scaled up and used to make large high-energy, high-power cells for evaluation and demonstration. Commercial Applications and Other Benefits as described by the awardee The anode material should allow the production of rechargeable Li-ion batteries with at least double the current energy density of commercially ...

Synthesis of AlFe Intermetallic Nanoparticles by High ...

Synthesis of AlFe Intermetallic Nanoparticles by High-Energy Ball Milling - Volume 1766 - G. Rosas, J. Chihuaque, E. Bedolla, R. Esparza, R. Prez

High pressure and high temperature investigations on ...

High pressure and high temperature investigations on intermetallic compounds using energy-dispersive X-ray powder diffraction By T. Peun, J. Lauterjung and

Surface Iron Species in Palladium Iron Intermetallic ...

2020-5-161808C, being 6.6, 1.6, 3.3, and 5.3 times as high as that of fcc-PdFe nanocrystals, RuC, NiC, and PdC, respectively. After 20 rounds of successive reaction, 98 of the original activity was retained for PdFe intermetallic nanocrystals. Further mechanistic studies revealed that PdFe intermetallic ...

Intermetallic SnSb nanodots embedded in carbon

2019-11-12Intermetallic SnSb nanodots embedded in carbon nanotubes reinforced nanofabric electrodes with ... high energy density and operating voltage.16 Although great progress has been achieved in the commercial graphite anode, low theoretical capacity

Topic Advanced Engineering Intermetallic Titanium Aluminides

2019-4-28Topic Advanced Engineering Intermetallic Titanium Aluminides Speaker Prof. Helmut Clemens ... For example, in-situ high-energy X-ray diffraction was conducted to study dynamic recovery and recrystallization processes during hot-deformation tests.

- - PKU

2020-3-211. 2016YFB01002002016.1-2020.12 2.U1764255, ...