To change the properties of magnetic fluids in an alternating magnetic field

2017 ◽  
Vol 11 (1) ◽  
pp. 103-114
Author(s):  
K. V. Shchurin ◽  
I. G. Panin
Keyword(s):  
Magnetic Field ◽  
Environmental Performance ◽  
Combustion Engine ◽  
Magnetic Fluids ◽  
Physical Basis ◽  
Alternating Magnetic Field ◽  
High Rate ◽  
Magnetic Liquid ◽  
Comparative Testing ◽  
External Activation

Provides an overview of magnetic fluids and their external activation methods weak energy impacts. Considered the physical basis of magnetic fuel activation with a view to change their molecular and nadmolekuljarnyh structures. A new design of magnetic liquid Activator Wednesday with a high rate of utilization of capacity. Shows comparative testing fuels combustion engine, resulting in significant increase recorded their energy and environmental performance after magnetic fuel activation. Considered a prerequisite applying magnetic rocket fuels activation.

Specific heating power of fatty acid and phospholipid stabilized magnetic fluids in an alternating magnetic field

2008 ◽  
Vol 20 (20) ◽  
pp. 204131 ◽  
Author(s):  
M De Cuyper ◽  
M Hodenius ◽  
G Ivanova ◽  
M Baumann ◽  
E Paciok ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Fatty Acid ◽  
Magnetic Fluids ◽  
Heating Power ◽  
Alternating Magnetic Field

Peculiarities of interaction of magnetic liquid droplets containing magnetized aggregates with alternating magnetic field

2015 ◽  
Vol 41 (5) ◽  
pp. 422-424 ◽  
Author(s):  
Yu. I. Dikanskii ◽  
O. V. Borisenko ◽  
M. A. Bedzhanyan ◽  
M. I. Korobov
Keyword(s):  
Magnetic Field ◽  
Alternating Magnetic Field ◽  
Liquid Droplets ◽  
Magnetic Liquid

RESEARCH OF PROPERTIES OF MAGNETIC LUBRICANTS BASED ON ORGANOSILICON LIQUID

2020 ◽  
pp. 26-32
Author(s):  
V.V. Terentyev ◽  
◽  
А. М. Bausov ◽  
М. V. Toropov ◽  
◽  
...  
Keyword(s):  
Magnetic Field ◽  
Mathematical Model ◽  
Oleic Acid ◽  
Magnetic Fluid ◽  
Magnetic Fluids ◽  
Ferromagnetic Phase ◽  
Magnetic Liquid ◽  
Metal Base ◽  
Adhesion Coefficient ◽  
The Stability

The results of research on lubricants which are magnetic fluids are presented. The positive effect on the characteristics of the lubricant of pondemotor force that occurs when an external magnetic field is applied is noted. The purpose of this work is to study the properties of magnetic lubricants based on polyethylsiloxane liquids and confirm the previously stated theoretical assumptions. The main objectives of the research are to develop the composition of a lubricant based on a polyethylsiloxane magnetic fluid, to determine the characteristics of adhesion of this material to a metal base, to obtain an adequate mathematical model describing the characteristics of adhesion of the lubricant to the surface, and to determine its stability during operation. Experimental installations and methods for determining the characteristics of the coupling of magnetic fluids with the friction surface, as well as the stability of magnetic fluid itself during operation, have been developed. The prospects of introducing oleic acid into the organosilicon base of the magnetic liquid are noted. A decrease in the adhesion coefficient with an increase in the rotational speed of the samples at loads from 160 N to 320 N was revealed by an average of 1.6...2.7 times. It is proved that the magnetic lubricant adheres to the metal base more strongly than Litol-24 by an average of 6 times, which prevents the rolling elements from slipping during the operation of the samples. Different patterns of changes in adhesion to metal surfaces of Litol-24 and magnetic fluids are noted. An increase in the adhesion coefficient of magnetic fluids under the conditions of applying a constant magnetic field at loads on samples from 480 N to 800 N due to the magnetorheological effect by 20...30% is established. A mathematical model is obtained that adequately describes the change in the adhesion coefficient of the obtained magnetic lubricant. The composition of the magnetic liquid is recommended, consisting of a polyethylene siloxane carrier liquid, a surfactant-oleic acid, and a ferromagnetic phase-magnetite with a particle size of 7.5 nm. High stability of the developed magnetic fluids during longterm operation has been experimentally established. The stability coefficient of the magnetic fluid decreased by 2.51 times in 366 hours.

scholarly journals Magnetic Fluids’ Heating Power Exposed to a High-Frequency Rotating Magnetic Field

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Miloš Beković ◽  
Mislav Trbušić ◽  
Mladen Trlep ◽  
Marko Jesenik ◽  
Anton Hamler
Keyword(s):  
Magnetic Field ◽  
High Frequency ◽  
Magnetic Fluids ◽  
The Body ◽  
Heating Power ◽  
Rotating Magnetic Field ◽  
Alternating Magnetic Field ◽  
Heating Effect ◽  
Rotational Magnetic Field

Magnetic fluids are superparamagnetic materials that have recently been the subject of extensive research because of their unique properties. Among them is the heating effect when exposed to an alternating magnetic field, wherein the objective is to use this property in medicine as an alternative method for the treatment of tumors in the body. The heating effect characterization for the alternating magnetic field (AMF) has been studied widely, whilst for the rotational magnetic field (RMF), no systematic study has been done yet. In this article, we present the characterization of the heating power of magnetic fluids in a high-frequency rotational magnetic field. The results show similar behavior of heating power or specific absorption rate characteristics as in AMF.

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