Results 181 to 190 of about 2,830 (209)

Magnetske nanočestice tipa Fe2B, FeCoB, NiCoB

2010
U radu je opisana sinteza magnetskih nanočestica tipa Fe2B, FeCoB i NiCoB ovijenih SiO2 te njihova karakteritacija pomoću skenirajuće elektronske mikroskopije (SEM) i difrakcije rentgenskog zračenja na praškastom uzorku (XRPD). Cilj rada bilo je iznalaženje eksperimentalnih uvjeta koji će omogućiti bolju kontrolu veličine nanočestica i dobivenje uske ...
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Effect of Heat Treatment on the Mechanical Alloyed Fe2B

2002
High energy milling process has been used to prepare the Fe2B alloy. X-ray, DSC and Mossbauer data of the 310 h milled alloy (sample A) show the presence of three phases: small fractions of α-Fe (n-Fe) and Fe2B (n-Fe2B) nanocrystallines phases and a large amount of amorphous Fe2B (a-Fe2B) phase (73%).
E. C. Passamani, J. R. B. Tagarro, C. Larica   +2 more
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Phase transition from Fe3B to Fe2B under high pressure

Journal of Materials Science Letters, 1997
jilin univ, dept phys, changchun 130023, peoples r china. acad sinica, inst met res, state key lab rsa, shenyang 110015, peoples r china.;yao, b (reprint author), jilin univ, dept phys, changchun 130023, peoples r ...
B. YAO, W. H. SU, F. S. LI, B. Z. DING, Z. Q. HU   +4 more
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Interface morphology and corrosion behavior of bulk Fe2B in liquid Al

Materials Characterization, 2019
Abstract The corrosion behavior and products of bulk Fe2B in liquid Al at 750 °C were systematically investigated by static immersion tests, and characterized in detail through the joint approach of scanning electron microscopy (SEM), electron backscattered diffraction (EBSD), electron probe micro-analyzer (EPMA), and transmission electron microscopy
Mengmeng Wang, Jing Xue, Rui Gao, Haiyan Gao, Yang Zhou, Yangyong Zhao, Yahui Liu, Maodong Kang, Jun Wang   +8 more
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Magnetic and Electronic Properties of Nanocrystalline Fe2B and Fe3C Compounds

AIP Conference Proceedings, 2007
The nanocrystalline Fe3C and Fe2B samples were prepared by high energy ball milling and subsequent annealing. The saturation magnetization at 4.2 K is 1.94 μB/ f.u. for Fe3C and 1.75 μB/ f.u. for Fe2B. Band structure calculations show a negative polarization at B and C sites. The computed iron moments are close to experimentally determined values.
E. Dorolti, P. Vlaic, E. Burzo, C. Djéga-Mariadassou   +3 more
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Deformation-induced dissolution of the Fe2B boride in nanocrystalline α-Fe

The Physics of Metals and Metallography, 2006
Structural-phase transformations in the α-Fe+Fe2B composite with a total boron content of 15 at. % during mechanical grinding in a planetary ball mill have been studied using X-ray diffraction, Mossbauer spectroscopy, and magnetic measurements. It has been established that dissolution of the Fe2B boride with the formation of an amorphous phase and ...
E. P. Elsukov, I. V. Povstugar, A. L. Ul’yanov, G. A. Dorofeev   +3 more
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Growth Kinetics of the Fe2B Coating on AISI H13 Steel

Transactions of the Indian Institute of Metals, 2014
A kinetic model was suggested to study the growth kinetics of Fe2B layers on AISI H13 steel via the pack-boriding method in the temperature range of 1,123–1,273 K. This model was based of the principle of mass conservation at the (Fe2B/substrate) interface where the boride incubation time was independent of the boriding temperature.
M. Keddam, M. Ortiz-Domínguez, M. Elias-Espinosa, O. Damián-Mejía, A. Arenas-Flores, O. A. Gómez-Vargas, M. Abreu-Quijano, Jorge Iván Aldana-González, J. Zuno-Silva   +8 more
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Optically-induced changes in magnetic properties of Fe2B/BiFeO3 heterostructure

Journal of Alloys and Compounds, 2018
Abstract Optical control of magnetic properties in exchange coupled photostrictive/ferromagnetic heterostructures is of great fundamental and technical interest for application in information storage, spintronic and microwave magnetic devices. In the present research, an optical modification of exchange bias field and magnetic properties of Fe2B ...
Ali Aftabi, Mohammad Mehdi Tehranchi
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Sinteza i karakterizacija magnetskih nanočestica tipa Fe2B

2009
Magnetske nanočestice Fe2B i FeCoB su dobivene redukcijom vodenih otopina soli željeza i kobalta pomoću kalijevog borhidrida [1, 2]. Pri samoj sintezi nanočestice se mogu oklopiti silicijevim dioksidom [3] što mijenja njihova svojstva i međudjelovanje.
Novosel, Nikolina, Skoko, Željko, Babić, Emil, Cindrić, Marina, Zadro, Krešo, Mustapić, Mislav, Pajić, Damir   +6 more
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Kinetic Investigation and Wear Properties of Fe2B Layers on AISI 12L14 Steel

Metallurgical and Materials Transactions A, 2018
In the current study, the powder-pack boriding was applied to the AISI 12L14 steel in the temperature range 1123 K to 1273 K for an exposure time between 2 and 8 hours. The produced boride layer was composed of Fe2B with a sawtooth morphology. A diffusion model based on the integral method was applied to investigate the growth kinetics of Fe2B layers ...
M. Keddam, M. Ortiz-Dominguez, M. Elias-Espinosa, A. Arenas-Flores, J. Zuno-Silva, D. Zamarripa-Zepeda, O. A. Gomez-Vargas   +6 more
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