Induction thermal plasma synthesis of Mg2Ni nanoparticles

2014-06-15
Aktekin, Burak
ÇAKMAK, GÜLHAN
Öztürk, Tayfur
A study was carried out into possibility of thermal plasma synthesis of Mg2Ni nanoparticles. Both prealloyed powders and elemental powders were used as precursors in an inductively coupled thermal plasma incorporating two injection probes located axially in the reactor one from the top and the other from the bottom. The study has shown that the use of prealloyed Mg2Ni as precursor leads to its disintegration in the plasma condensing into separate phases and therefore was not suitable for the synthesis of Mg2Ni. The study further showed that Mg2Ni can be synthesized quite successfully with the use of elemental powders provided that elements are maintained into the plasma at carefully controlled positions. While the fraction of Mg2Ni was quite substantial, it co-existed with other phases and therefore additional treatments would be necessary for separation. It was shown that a substantial size reduction was possible with thermal plasma where Mg2Ni could be produced in sizes around 100 nm. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

Suggestions

Depth profile investigations of silicon nanocrystals formed in sapphire by ion implantation
Yerci, Selçuk; Yıldız, İlker; BAROZZİ, MARİO; BERSANİ, MASSİMO; Turan, Raşit (2007-07-15)
Depth profiles of Si nanocrystals formed in sapphire by ion implantation and the effect of charging during X-ray Photoelectron Spectroscopy (XPS) and Secondary Ion Mass Spectrometry (SIMS) measurements have been studied. Atomic concentration and the chemical environment of Si, Al, and O have been measured as a function of depth from the sample surface by SIMS and XPS. Both as-implanted and annealed samples have been analyzed to understand the effect of nanocrystal formation on the depth distribution, chemic...
Experimental investigation of the failure of air plasma sprayed thermal barrier coatings
Kütükoğlu, Başar; Çöker, Demirkan; Department of Aerospace Engineering (2015)
In this thesis, an experimental method is developed to determine the interfacial fracture toughness of air plasma sprayed thermal barrier coatings. The thesis is composed of three major parts. In the first part, nanoindentation is used to measure the elastic modulus and hardness of the APS TBC specimens composed of three major layers: Inconel 718 substrate, NiCrAlY based metallic bond coat (BC) and YSZ based ceramic top coat (TC). Microscopy, XRD and EDS are used for metallurgical characterization. In the s...
Continuous synthesis of graphite with tunable interlayer distance
ÇAKMAK, GÜLHAN; Öztürk, Tayfur (2019-06-01)
A study was carried out to produce graphite with controlled interlayer distance synthesized from methane using hydrogen as modifying agent. The synthesis was carried out in radio frequency (r.f.) thermal plasma where the methane-to-hydrogen ratio varied systematically over a wide range. The synthesized materials were investigated in terms of structure, morphology and the interlayer distance. It is found that there is a critical fraction of hydrogen, around half of that of methane flow rate, up to which it i...
Biosensors Based on Nano-Gold/Zeolite-Modified Ion Selective Field-Effect Transistors for Creatinine Detection
Kasap, Berna Ozansoy; Marchenko, Svitlana V.; Soldatkin, Oleksandr O.; Dzyadevych, Sergei V.; Akata Kurç, Burcu (2017-03-02)
The combination of advantages of using zeolites and gold nanoparticles were aimed to be used for the first time to improve the characteristic properties of ion selective field-effect transistor (ISFET)-based creatinine biosensors. The biosensors with covalently cross-linked creatinine deiminase using glutaraldehyde (GA) were used as a control group, and the effect of different types of zeolites on biosensor responses was investigated in detail by using silicalite, zeolite beta (BEA), nano-sized zeolite beta...
Effective mass and peculiarity of optical properties of Cadmium Sulfide nanoparticles
Muradov, M. B.; Eyvazova, G. M.; Turan, Raşit; Maharramov, A. M. (2008-12-01)
X-ray diffraction data, electron microscope and optical properties of cadmium sulfide nanoparticles were analyzed. It is shown that the value of the reduced effective mass of charge carriers in nanoparticles differs from bulk crystals. Changes of effective mass and "red shift" in values of band gap are explained by the occurrence of additional electronic potential in nanoparticles.
Citation Formats
B. Aktekin, G. ÇAKMAK, and T. Öztürk, “Induction thermal plasma synthesis of Mg2Ni nanoparticles,” INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, pp. 9859–9864, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30460.