scholarly journals Гомогенизационный отжиг и магнитные свойства образца фазы Лавеса GdNi-=SUB=-2-=/SUB=-

2021 ◽  
Vol 63 (12) ◽  
pp. 1994
Author(s):  
А.В. Маширов ◽  
И.И. Мусабиров ◽  
М.С. Аникин ◽  
М.А. Сёмкин ◽  
В. Митюк ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Microscopy ◽  
Phase Transition ◽  
Scanning Electron Microscopy ◽  
Curie Point ◽  
Annealed Sample ◽  
Impurity Phase ◽  
Temperature Hysteresis ◽  
Cast Sample ◽  
Scanning Electron

The paper shows the effect of homogenization annealing on the ferromagnet-paramagnet phase transition in the GdNi2 alloy. In the cast sample, at the Curie point, a temperature hysteresis is observed, which in an external magnetic field of 13.5 T can be at least 3 degrees. The data of scanning electron microscopy of the electropolished samples showed a decrease in the impurity phase of GdNi and practically no temperature hysteresis of the phase transition in the annealed GdNi2 sample. The value of the isothermal change entropy DSm = - 18.931 J/(kg*K) for an annealed sample of the GdNi2 alloy at the Curie point of 75 K in a magnetic field of 13.5 T.

scholarly journals Some aspects of nickel electrodeposition in the presence of a magnetic field

2005 ◽  
Vol 70 (10) ◽  
pp. 1213-1217 ◽  
Author(s):  
Nebojsa Nikolic
Keyword(s):  
Magnetic Field ◽  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Magnetic Properties ◽  
Dendritic Structure ◽  
Nickel Deposit ◽  
Nickel Electrodeposition ◽  
Nickel Deposits ◽  
Scanning Electron

Nickel deposits obtained from a Watt solution both without and with a perpendicularly oriented magnetic field were examined by scanning electron microscopy (SEM). The nickel deposit obtained without an imposed magnetic field was very rough, with a clearly visible clustered structure. The nickel deposit obtained under a perpendicularly oriented magnetic field has a very developed dendritic structure, which can be denoted as arboreous ? bead dendritic structure. The ob- served difference is essentially ascribed to the effect of a magnetic field on the magnetic properties of nickel.

Structural and Magnetic Properties of Sintered Materials on the Basis of Zinc Oxide

2013 ◽  
Vol 200 ◽  
pp. 261-266
Author(s):  
Igor Virt ◽  
Igor Rudyi ◽  
Ivan Kurilo ◽  
Ivan Lopatynskyi ◽  
Marian Frugynskyi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Magnetic Properties ◽  
Theoretical Models ◽  
Structural And Magnetic Properties ◽  
Faraday Method ◽  
The Magnetic Field ◽  
Sintered Materials ◽  
Scanning Electron

Structural and magnetic properties of ceramics Zn1-xCoxO and Zn1-xCrxO are studied. Average sizes of grains are determined by scanning electron microscopy. The magnetic field dependences of magnetic susceptibility are investigated by Faraday method. The relevant theoretical models are chosen.

Microstructure Analysis of the Weld Metal of Ni-Based Superalloys

2017 ◽  
Vol 371 ◽  
pp. 44-48
Author(s):  
Young Min Kim ◽  
Min Jung Kang
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Phase Transition ◽  
Scanning Electron Microscopy ◽  
Weld Metal ◽  
Niobium Carbide ◽  
Metal Analysis ◽  
X Ray ◽  
Analysis Phase ◽  
Scanning Electron

In this study, we analyzed weld cracking in Ni-based superalloys. Alloys with about 64 wt.% Ni and 31 wt.% Ni were used for the weld metal analysis. Phase transition predicted by thermodynamic calculation were compared with experimental results. The weld metal’s microstructure was analyzed by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) mapping, and its mechanical properties tested. From EDX mapping, it was established that the alloying elements (Nb and Mo) were segregated around the weld crack as a result of the formation of a niobium carbide (NbC).

Urethane Magnetorheological Elastomers - Manufacturing, Microstructure and Properties

2009 ◽  
Vol 154 ◽  
pp. 107-112 ◽  
Author(s):  
Anna Boczkowska ◽  
Stefan F. Awietjan
Keyword(s):  
Magnetic Field ◽  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Vibrating Sample Magnetometer ◽  
Iron Particles ◽  
Magnetorheological Elastomers ◽  
Microstructure And Properties ◽  
Ferromagnetic Particles ◽  
Scanning Electron

In this paper studies on urethane magnetorheological elastomers (MREs) microstructure in respect to their magnetic and mechanical properties are reported. MREs were obtained from a mixture of polyurethane gel and carbonyl-iron particles cured in a magnetic field of 100 and 300 mT. The amount of particles was varied from 1.5 to 33 vol. %. Samples with different arrangements of particles were produced. Effect of the amount of ferromagnetic particles and their arrangement on microstructure and properties in relation to the external magnetic field was investigated. The microstructure was studied using scanning electron microscopy. Magnetic properties were measured using vibrating sample magnetometer. Rheological and mechanical properties under compression were also examined.

Effects of Plate Magnetic Field on Iron-Rich Phase of Al-20Si-10Fe Alloy during Solidification

2012 ◽  
Vol 182-183 ◽  
pp. 167-173
Author(s):  
Ming Li ◽  
Zhi Ming Shi ◽  
Dong Fang
Keyword(s):  
Magnetic Field ◽  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Phase Transformation ◽  
Optical Microscopy ◽  
Energy Dispersive Spectrum ◽  
Rich Phase ◽  
Transmission Electron ◽  
Scanning Electron

This paper studies iron-rich phase transformation law and mechanism of Al-20Si-10Fe alloy under the effect of plate magnetic field. with optical microscopy(OM)，scanning electron microscopy(SEM),energy dispersive spectrum(EDS)and transmission electron microscopy(TEM). The results show that plate magnetic field is directly involved in the phase transformation of iron-rich phase, making iron-rich phase change from lath-shaped β-Al5FeSi to herringbone-shapedα-Al8SiFe2. The enforcement of plate magnetic field during the phase-transforming process of β-Al5FeSi→α-Al8Si Fe2makes block α-Al1.3Si7.8Fe2.1phase yield out. And precipitation of α-Al1.3Si7.8Fe2.1phase is affected by the transforming process ofβ-Al5SiFe phase→α-Al8Si Fe2phase.

scholarly journals The effects of a magnetic field on the morphologies of nickel and copper deposits: The concept of "effective overpotential"

2007 ◽  
Vol 72 (8-9) ◽  
pp. 787-797 ◽  
Author(s):  
Nebojsa Nikolic
Keyword(s):  
Magnetic Field ◽  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Magnetic Fields ◽  
Applied Magnetic Field ◽  
Electrode Surface ◽  
Copper Deposits ◽  
Perpendicular Orientation ◽  
The Magnetic Field ◽  
Scanning Electron

The morphologies of nickel and copper deposits obtained without applied magnetic fields, and with both parallel and perpendicular applied magnetic fields were examined by the scanning electron microscopy (SEM) technique. Changes in the morphologies of the metals caused by the effect of the magnetic fields are explained by the concept of "effective overpotential". The morphologies of the nickel and copper deposits obtained under parallel oriented magnetic fields were similar to those obtained at some lower cathodic potentials without an applied magnetic field. The magnetic field with a perpendicular orientation to the electrode surface increased the dispersity of the nickel and copper deposits. Nickel and copper deposits obtained under this orientation of the magnetic field were similar to those obtained at some higher cathodic potentials without an applied magnetic field. .

BiVO4 Powder Synthesized via the Solvothermal Method

2014 ◽  
Vol 931-932 ◽  
pp. 157-161 ◽  
Author(s):  
Pongthep Jansanthea ◽  
Pusit Pookmanee ◽  
Sirirat Phaisansuthichol ◽  
Sakchai Satienperakul ◽  
Supaporn Sangsrichan ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Phase Transition ◽  
Scanning Electron Microscopy ◽  
Acetic Acid ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Chemical Composition ◽  
Energy Dispersive Spectroscopy ◽  
Solvothermal Method ◽  
Scanning Electron

Bismuth vanadate (BiVO4) powder was synthesized via the solvothermal method at 100200 °C for 26h by using acetic acid as solvent without calcination steps. The phase transition of BiVO4 powder was studied by Xray diffraction (XRD). The morphology and chemical composition of BiVO4 powder were investigated by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The functional groups of BiVO4 powder was identified by Fourier transform infrared spectroscopy (FTIR).

Sign in / Sign up

Export Citation Format

Share Document