Results 21 to 30 of about 503,570 (301)

Synthesis, structure and properties of nickel-iron-tungsten alloy electrodeposits - part I: Effect of synthesis parameters on chemical composition, microstructure and morphology [PDF]

Science of Sintering, 2015
Kinetic and operational electrolysis parameters determine the polarization characteristics, electrodeposition current efficiency, morphology, chemical composition and microstructure of nickel/iron/tungsten alloy deposits.
Ćirović N., Spasojević P., Ribić-Zelenović L., Mašković P., Spasojević M.   +4 more
doaj   +1 more source

Enhanced initial biodegradation resistance of the biomedical Mg-Cu alloy by surface nanomodification

Journal of Magnesium and Alloys, 2023
Mg-Cu alloys are promising antibacterial implant materials. However, their clinical applications have been impeded by their high initial biodegradation rate, which can be alleviated using nanotechnology by for example surface nanomodification to obtain a
Wen Zhang, Ming-Chun Zhao, Zhenbo Wang, Lili Tan, Yingwei Qi, Deng-Feng Yin, Ke Yang, Andrej Atrens   +7 more
doaj   +1 more source

Influence of nanocrystalline nickel powder on oxidation resistance of spark plasma sintered Ni-17Cr6.5Co1.2Mo6Al4W7.6Ta alloy

Journal of King Saud University: Engineering Sciences, 2020
An investigation was carried out to evaluate the isothermal oxidation behavior of nickel based superalloys at 1100 °C for 120 h. The alloys which were microstructured and nanostructured were developed by spark plasma sintering system.
Bukola Joseph Babalola, Nthabiseng Maledi, Mxolisi Brendon Shongwe, Michael Oluwatosin Bodunrin, Babatunde Abiodun Obadele, Peter Apata Olubambi   +5 more
doaj   +1 more source

The Mechanical Behavior and Microstructure of a Multilayer Nanostructured Ni-Co Alloy Fabricated by Electrodeposition

International Journal of Electrochemical Science, 2021
A bulk multilayer nanostructured Ni-Co alloy with nano-grains (NG) layer with a thickness of 2.7μm and ultrafine grains (UFG) layer with a thickness of 0.9μm alternately grown is fabricated by an electrodeposition process.
Xiaoxue Zhang, Xixun Shen, Jiawen Chen
doaj   +1 more source

Thermoelectric behavior of Bi2Te2.55Se0.45 with a tunable seebeck coefficient: A comparison between coarse needle-like structure and bulk nanostructured alloys

Journal of Materials Research and Technology, 2023
In this study, we compare the thermoelectric properties of coarse-grained n-type Bi2Te2.55Se0.45 alloy prepared by induction melting with the bulk-nanostructured prepared by ball milling and hot-pressing techniques.
Farah M. El-Makaty, R.A. Shakoor, Abdelmagid Hammuda, Khaled M. Youssef   +3 more
doaj   +1 more source

Obstacles to applications of nanostructured thermoelectric alloys [PDF]

Frontiers in Chemistry, 2014
A major theme in thermoelectric research is based on controlling the formation of nanostructures that occur naturally in bulk intermetallic alloys through various types of thermodynamic phase transformation processes (He et al., 2013). The question of how such nanostructures form and why they lead to a high thermoelectric figure of merit (zT) are ...
Sharma, Peter A., Sugar, Joshua D.
openaire   +3 more sources

Effect of deposition current density and annealing temperature on the microstructure and magnetic properties of nanostructured Ni-Fe-W-Cu alloys [PDF]

Science of Sintering, 2019
Ni-Fe-W-Cu alloy powders were obtained by electrodeposition from an ammonium citrate bath at current densities ranging between 70 and 600 mA cm-2. As the deposition current density increased, the contents of Fe and W in the alloy increased, and ...
Spasojević Milica, Marković Dušan, Spasojević Miroslav, Vuković Zoran, Maričić Aleksa, Ribić-Zelenović Lenka   +5 more
doaj   +1 more source

Synthesis, structure and properties of nickel-iron-tungsten alloy electrodeposits - Part II: Effect of microstructure on hardness, electrical and magnetic properties [PDF]

Science of Sintering, 2016
Nanostructured nickel-iron-tungsten alloys were produced by electrodeposition from an ammoniacal citrate bath. The tungsten content of the alloy ranged from 0.8 wt.% to 11 wt.%, and the crystal grain size of the FCC phase of the solid solution ...
Ćirović Nataša, Spasojević Pavle, Ribić-Zelenović Lenka, Mašković Pavle, Maričič Aleksa, Spasojević Miroslav   +5 more
doaj   +1 more source

Nanostructurization of Fe-Ni Alloy [PDF]

Nanoscale Research Letters, 2017
Data about an effect of cyclic γ-α-γ martensitic transformations on the structure state of reverted austenite Fe-31.7 wt.% Ni-0.06 wt.% C alloy are presented. The effect of multiple direct γ-α and reverse α-γ martensitic transformations on fragmentation of austenitic grains has been investigated by electron microscopy and X-ray diffraction methods.
openaire   +2 more sources

Nanostructured crystallization of casting alloys

Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), 2022
Crystallization of casting alloys has been shown to be a nanostructured process. Microcrystals of phases in the temperature range of liquidus and solidus, during eutectic and peritectic reactions, are formed from nanocrystals of components A and B of alloys, their free atoms and atomic complexes.
E. I. Marukovich, V. Yu. Stetsenko, A. V. Stetsenko   +2 more
openaire   +2 more sources