Iron Nanoparticle Production by the Method of Electric Explosion of Wire

2021 ◽  
Vol 13 ◽  
Author(s):  
Elena Gryaznova ◽  
Alexey Pustovalov
Keyword(s):  
Particle Size ◽  
Specific Energy ◽  
Initial Conditions ◽  
High Surface ◽  
High Surface Area ◽  
Electrical Explosion ◽  
Narrow Particle Size Distribution ◽  
Magnetic Characteristics ◽  
Specific Energy Input ◽  
Iron Wire

Background: The widespread use of the iron nanopowders connected with widely range of characteristics such as size, magnetic characteristics and high surface area and that is why in the literature are present many researches of its different applications. Objective: The work studies the influence of the conditions of the iron wire electrical explosion on the course of the explosion process and the dispersed composition of the resulting metal nanopoweder. Method: Experiments on electrical explosion of iron wires were carried out in the laboratory setup with the different initial conditions of electrical explosion of the iron wire. Results: The influence of the initial wire electrical explosion conditions on the explosion regime, the specific energy input into the conductor, and the specific energy released in the arc stage of discharge are definitely determined. The empirical equations for calculation of the initial wire electrical explosion conditions for providing the critical explosion in the argon medium at a pressure of 2·105 Pa were defined. It has been established that for synthesis of iron nanopowders with a narrow particle size distribution, it is preferable to use modes with a high level of the energy released in the arc stage of the discharge. Conclusion: It was found that disabling the arc stage of the discharge during EEW leads to the decreasing of the average surface particle size by 50%.

II. Magnetic qualities of iron

1894 ◽  
Vol 54 (326-330) ◽  
pp. 75-77 ◽  
Keyword(s):  
Magnetic Induction ◽  
Magnetic Force ◽  
Magnetic Hysteresis ◽  
Iron Wire ◽  
Sheet Iron

The paper describes a series of observations of magnetic quality in vai'ious specimens of sheet iron and iron wire. A principal object was to determine the amount of energy lost in consequence of magnetic hysteresis when the iron under examination was carried through cyclic magnetising processes between assigned limits of the magnetic induction B. For this purpose observations of the relation of the induction B to the magnetic force H were made, from which curves were drawn, and the area enclosed by the curves in cyclic magnetising processes was measured.

scholarly journals Performance of NO Reduction by Reburning Assisted by Iron Wire

2017 ◽  
Author(s):  
Xing-xing CHENG ◽  
Ming LIU ◽  
Zhi-qiang WANG ◽  
Yan-rong FAN ◽  
Chun-yuan MA
Keyword(s):  
No Reduction ◽  
Iron Wire

Preparation of Pd Membrane Supported on Al2O3 Nanofiber Nonwoven Used in Hydrogen Separation

2011 ◽  
Vol 221 ◽  
pp. 662-667
Author(s):  
Jie Shi ◽  
Di Jia ◽  
Bo Wen Cheng ◽  
Wei Min Kang ◽  
Xue Bai
Keyword(s):  
Reducing Agent ◽  
Hydrogen Separation ◽  
Sodium Hypophosphite ◽  
Surface Element ◽  
Pretreatment Method ◽  
Iron Wire ◽  
Pd Membrane ◽  
Plating Method ◽  
Electrospinning Method ◽  
Electroless Plating Method

. In this paper, thin palladium (Pd) membranes, which are supported on alumina nanofiber nonwoven produced by electrospinning method, were prepared by electroless plating method. The influence of different pretreatment methods (iron wire activation) and reducing agent (sodium hypophosphite and hydrazine hydrate) on the structure of Pd membrane were studied. The morphology, surface element and crystal structure of the Pd membrane were investigated by SEM, EDS and XRD. The results showed that the compact Pd membrane was formed on the alumina nanofiber nonwoven when the pretreatment method of iron wire activation was adopted and the reducing agent of sodium hypophosphite was used, which will be applied widely in hydrogen separation area.

Iron Wire

1847 ◽  
Vol 2 (40) ◽  
pp. 320-320
Keyword(s):  
Iron Wire

2. On Superposed Magnetisms in Iron and Nickel

1884 ◽  
Vol 12 ◽  
pp. 225-226
Author(s):  
C. G. Knott
Keyword(s):  
North Pole ◽  
Iron Wire ◽  
The North ◽  
The Wire

When an iron wire is magnetised longitudinally, it lengthens in the direction of magnetisation, according to an old discovery of Joule's. More recently Wiedemann showed that when wire is at the same time magnetised circularly it tends to twist. Thus, if an iron wire be fixed at one end, and stretched vertically by means of a mass attached to the free end, the free end will twist round when the wire is both traversed by one current and magnetised by another which traverses a helix surrounding it. If the wire is magnetised so as to have the north pole down, a down current will make the free end twist in the direction of the hands of a watch as looked at from above. Eeversal of either current reverses the direction of twist; reversal of both produces no alteration. Maxwell and Chrystal have pointed out that Wiedemann's phenomenon can be explained by means of Joule's.

scholarly journals The Passivation Behavior of Carbon Steel Rods of Nepal in Different Media

1970 ◽  
Vol 22 ◽  
pp. 34-40
Author(s):  
J. Bhattarai ◽  
A. Kafle ◽  
N. P. Bhattarai
Keyword(s):  
Corrosion Resistance ◽  
Carbon Steel ◽  
Corrosion Rate ◽  
Open Circuit ◽  
Electrochemical Measurements ◽  
High Corrosion Resistance ◽  
Iron Wire ◽  
High Corrosion ◽  
Naoh Solution ◽  
Hcl Solution

The passivation behavior of carbon steel rods of Nepal is studied in 1 M HCl, 0.5 M NaCl and 1 M NaOH solutions at 25°C, open to air using corrosion tests and electrochemical measurements. The corrosion rate of all the examined steel rods is significantly lower in 1 M NaOH solution (about 10-3 mm/y) than those in 0.5 M NaCl (about 10-2 mm/y) and 1 M HCl (about 101-102 mm/y) solutions. The corrosion rate of SR71 steel rod is remarkably lower (3.65 mm/y) than those of other four different steel rods (3-4 x 102 mm/y) of Nepal in 1 M HCl solution. The ennoblement of the open circuit potentials of all the examined steel rod specimens is clearly observed in 1 M NaOH solution than those in 0.5 M NaCl and 1 M HCl solutions. The open circuit potentials of the steel rods are in the passive potential regions of the iron wire in 1 M NaOH solution. Therefore, steel rods of different companies of Nepal showed significantly high corrosion resistance in 1 M NaOH solution at 25°C.DOI: 10.3126/jncs.v22i0.520Journal of Nepal Chemical SocietyVol. 22, 2007 pp.34-40

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