Results 61 to 70 of about 2,828,055 (204)

Chemically Ordered Pt–Co–Cu/C as Excellent Electrochemical Catalyst for Oxygen Reduction Reaction [PDF]

open access: yes, 2020
This paper reveals the ordered structure and composition effect to electrochemical catalytic activity towards oxygen reduction reaction (ORR) of ternary metallic Pt–Co–Cu/C catalysts. Bimetallic Pt-Co alloy nanoparticles (NPs) represent an emerging class
Fu, Richard   +5 more
core   +1 more source

Exploration of the High Entropy Alloy Space as a Constraint Satisfaction Problem [PDF]

open access: yes, 2017
High Entropy Alloys (HEAs), Multi-principal Component Alloys (MCA), or Compositionally Complex Alloys (CCAs) are alloys that contain multiple principal alloying elements. While many HEAs have been shown to have unique properties, their discovery has been
Abu-Odeh, Anas   +7 more
core   +1 more source

Unified derivation of phase-field models for alloy solidification from a grand-potential functional

open access: yes, 2011
In the literature, two quite different phase-field formulations for the problem of alloy solidification can be found. In the first, the material in the diffuse interfaces is assumed to be in an intermediate state between solid and liquid, with a unique ...
G. J. Fix   +4 more
core   +1 more source

Dirac parameters and topological phase diagram of Pb1-xSnxSe from magneto-spectroscopy

open access: yes, 2018
Pb1-xSnxSe hosts 3D massive Dirac fermions across the entire composition range for which the crystal structure is cubic. In this work, we present a comprehensive experimental mapping of the 3D band structure parameters of Pb1-xSnxSe as a function of ...
Assaf, B. A.   +6 more
core   +1 more source

Methane cracking over cobalt molybdenum carbides [PDF]

open access: yes, 2018
The catalytic behaviour of Co3Mo3C, Co6Mo6C, Co3Mo3N and Co6Mo6N for methane cracking has been studied to determine the relationship between the methane cracking activity and the chemical composition.
Alshibane, I.   +3 more
core   +1 more source

Research on vacuum brazing of W-Cu composite to stainless steel with Cu-Mn-Co brazing metal

open access: yesScience and Engineering of Composite Materials, 2015
This thesis is a discussion on obtaining a vacuum brazing joint of W-Cu alloy and 18-8 stainless steel with Cu-Mn-Co filler metal under the process parameter of a brazing temperature of 1060°C and holding time of 1 h.
Liang Qiuhui   +3 more
doaj   +1 more source

Magnetization performance of hard/soft Nd9.6Fe80.3Zr3.7B6.4/α-Fe magnetic nanocomposites produced by surfactant-assisted high-energy ball milling

open access: yesMaterials Research Express, 2021
Neodymium iron boron (NdFeB) magnets are sintered anisotropic materials. They were commercially introduced in the early 1980s, and since have been used in different applications owing to their superior properties. Herein, we investigated the influence of
A M Semaida   +5 more
doaj   +1 more source

Determination of ferroelectric compositional phase transition using novel virtual crystal approach [PDF]

open access: yes, 2000
We employ a new method for studying compositionally disordered ferroelectric oxides. This method is based on the virtual crystal approximation (VCA), in which two or more component potentials are averaged into a composite atomic potential. In our method,
Ramer, Nicholas J., Rappe, Andrew M.
core   +1 more source

Phase-structural state of the high-entropy of AlcoNiFeCrTi alloy in the process of mechanical alloying and homogenization [PDF]

open access: yesМеталознавство та обробка металів, 2019
The results of the synthesis high entropy AlCoNiFeCrTi alloy from elemental powder mixture by short-term mechanical alloying (MA) method in high energy planetary mill and subsequent annealing at 1200 °С for 1 hour were shown.
Cherniavskyi V. V.   +2 more
doaj   +1 more source

High-entropy AlCoNiFeCrTiVx coatings куігдеув акщь electron-beam cladding [PDF]

open access: yesМеталознавство та обробка металів, 2019
The effect of V on the formation of the structure, phase composition, and microhardness of high-eltropy AlCoNiFeCrTiVx coatings obtained by electron-beam cladding on a steel substrate in vacuum is investigated. It has been established that AlCoNiFeCrTiV0
Yurkova Alexandra   +3 more
doaj   +1 more source

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