The Effect of Nanodispersed Magnetic Oil and Magnetic Field on Plastic and Corrosion Properties of Metal Surfaces

2021 ◽  
pp. 1246-1253
Author(s):  
A. N. Bolotov ◽  
V. V. Novikov ◽  
O. O. Novikova
Keyword(s):  
Magnetic Field ◽  
Metal Surfaces ◽  
Corrosion Properties

Corrosion properties of chemically modified metal surfaces

1998 ◽  
Vol 43 (1-2) ◽  
pp. 165-174 ◽  
Author(s):  
G. Grundmeier ◽  
C. Reinartz ◽  
M. Rohwerder ◽  
M. Stratmann
Keyword(s):  
Metal Surfaces ◽  
Corrosion Properties ◽  
Chemically Modified

Effect of Magnetic Field on the Electropolymerization and Corrosion Properties of Polyaniline (PANI) Film

2012 ◽  
Vol 472-475 ◽  
pp. 198-205 ◽  
Author(s):  
Chao Fang Dong ◽  
Yang Yang ◽  
Hong Luo ◽  
Kui Xiao ◽  
Xiao Gang Li
Keyword(s):  
Magnetic Field ◽  
Aqueous Solution ◽  
304 Stainless Steel ◽  
Pani Film ◽  
Stainless Steel Electrode ◽  
X Ray Diffraction ◽  
Corrosion Properties ◽  
Steel Electrode ◽  
X Ray ◽  
Ft Ir

The polyaniline have been prepared in the absence and presence of magnetic field by the technique of cyclic voltammetry (CV) on 304-stainless steel electrode in H2SO4 aqueous solution of aniline (Ani). The influence of magnetic field on electropolymerization of PANI was investigated by electrochemical properties, FT-IR spectra, X-ray diffraction (XRD) and microstructure. The results indicate that the effect of magnetic field on the polyaniline is positive.

Combined method of hardening and finishing abrasive treatment of parts surfaces in magnetic field

2021 ◽  
pp. 509-519
Author(s):  
S.A. Chizhik ◽  
L.M. Akulovich ◽  
M.L. Kheifetz ◽  
S.A. Klimenko ◽  
V.I. Lavrinenko ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Wear Resistance ◽  
Surface Layer ◽  
Mathematical Models ◽  
Metal Surfaces ◽  
Combined Method ◽  
Hardening Coatings ◽  
Abrasive Treatment ◽  
Spark Discharges ◽  
Joint Method

Method and technologies of coating metal surfaces by electric spark discharges with subsequent hardening abrasive treatment in a magnetic field are considered. The possibilities of increasing the wear resistance of metal surfaces by joint method of alloying the surface layer of the part and reducing its roughness are shown. Mathematical models of these processes have been developed, which make it possible to optimize the technologies of hardening coatings.

scholarly journals Effect of Co, Ti and Cr Additions on Microstructure, Magnetic Properties and Corrosion Resistance of Magnetocaloric Gd-Ge-Si Alloys

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5758
Author(s):  
Mariusz Hasiak ◽  
Jacek G. Chęcmanowski ◽  
Barbara Kucharska ◽  
Amadeusz Łaszcz ◽  
Aleksandra Kolano-Burian ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Corrosion Resistance ◽  
Curie Temperature ◽  
Curie Point ◽  
Magnetic Measurements ◽  
Entropy Change ◽  
Isothermal Heat Treatment ◽  
X Ray Diffraction ◽  
Corrosion Properties ◽  
Structure Investigations

The paper presents studies of microstructure, magnetic and corrosion properties of the Gd58Ge20Si22, Gd56Ge20Si22Co2, Gd56Ge20Si22Ti2 and Gd56Ge20Si22Cr2 (at.%) alloys after isothermal heat treatment at 1450 K for 2 h. The structure investigations of the produced materials performed by X-ray diffraction show the presence of Gd5Ge2Si2-type phase in all investigated samples. DC and AC magnetic measurements confirmed that the Curie temperature depends on the chemical composition of the produced alloys. From M(T) characteristics, it was found that the lowest Curie point (TC = 268 K) was estimated for the Gd58Ge20Si22 sample, whereas the highest value of the Curie temperature (TC = 308 K) was for the Gd56Ge20Si22Cr2 alloys. Moreover, the GdGeSi alloy without alloying additions shows the highest magnetic entropy change |ΔSM| = 15.07 J⋅kg−1⋅K−1 for the maximum magnetic field of 2 T. The maximum |ΔSM| measured for the Gd56Ge20Si22 with the addition of Co, Ti or Cr for the same magnetic field was obtained in the vicinity of the Curie point and equals to 2.92, 2.73 and 2.95 J⋅kg−1⋅K−1, respectively. Electrochemical studies of the produced materials for 60 min and 55 days exposure in 3% NaCl solution show that the highest stability and corrosion resistance were exhibited the sample with added of Ti.

Magnetic-field strengths from optical polarization data

1967 ◽  
Vol 31 ◽  
pp. 381-383
Author(s):  
J. M. Greenberg
Keyword(s):  
Magnetic Field ◽  
Optical Polarization ◽  
Polarization Data ◽  
Term Model ◽  
Source Of Information ◽  
Field Strengths

Van de Hulst (Paper 64, Table 1) has marked optical polarization as a questionable or marginal source of information concerning magnetic field strengths. Rather than arguing about this–I should rate this method asq+-, or quarrelling about the term ‘model-sensitive results’, I wish to stress the historical point that as recently as two years ago there were still some who questioned that optical polarization was definitely due to magnetically-oriented interstellar particles.

Observing the galactic magnetic field

1967 ◽  
Vol 31 ◽  
pp. 375-380
Author(s):  
H. C. van de Hulst
Keyword(s):  
Magnetic Field ◽  
Fair Agreement ◽  
Solar Neighbourhood ◽  
Galactic Magnetic Field ◽  
The Magnetic Field

Various methods of observing the galactic magnetic field are reviewed, and their results summarized. There is fair agreement about the direction of the magnetic field in the solar neighbourhood:l= 50° to 80°; the strength of the field in the disk is of the order of 10-5gauss.

Structure in the radiation of the galactic disk

1967 ◽  
Vol 31 ◽  
pp. 355-356
Author(s):  
R. D. Davies
Keyword(s):  
Magnetic Field ◽  
Galactic Disk ◽  
Galactic Magnetic Field ◽  
Measured Polarization

Observations at various frequencies between 136 and 1400 MHz indicate a considerable amount of structure in the galactic disk. This result appears consistent both with measured polarization percentages and with considerations of the strength of the galactic magnetic field.

Calculated Coronal Magnetic Fields and Their Comparison with the Coronal Structures as Observed during Five Solar Eclipses

1994 ◽  
Vol 144 ◽  
pp. 559-564
Author(s):  
P. Ambrož ◽  
J. Sýkora
Keyword(s):  
Magnetic Field ◽  
Solar Cycle ◽  
Magnetic Fields ◽  
Solar Corona ◽  
Coronal Magnetic Field ◽  
Coronal Magnetic Fields ◽  
Solar Eclipses ◽  
Coronal Structures

AbstractWe were successful in observing the solar corona during five solar eclipses (1973-1991). For the eclipse days the coronal magnetic field was calculated by extrapolation from the photosphere. Comparison of the observed and calculated coronal structures is carried out and some peculiarities of this comparison, related to the different phases of the solar cycle, are presented.

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