Influence of the electrolysis temperature on the formation, composition, structure, and magnetic properties of highly dispersed iron and iron-nickel alloy powders

1997 ◽  
Vol 36 (5-6) ◽  
pp. 264-268 ◽  
Author(s):  
E. P. Zhelibo ◽  
N. N. Kravets
Keyword(s):  
Magnetic Properties ◽  
Nickel Alloy ◽  
Highly Dispersed ◽  
Iron Nickel ◽  
Composition Structure

CTAB-mediated synthesis of iron–nickel alloy nanochains and their magnetic properties

2012 ◽  
Vol 407 ◽  
pp. 23-28 ◽  
Author(s):  
Xuegang Lu ◽  
Qianru Liu ◽  
Ge Huo ◽  
Gongying Liang ◽  
Qianjin Sun ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Nickel Alloy ◽  
Iron Nickel

Magnetic properties of synthetic taenite at high pressure

2020 ◽  
Author(s):  
Catherine McCammon ◽  
Qingguo Wei ◽  
Stuart Gilder
Keyword(s):  
Magnetic Field ◽  
High Pressure ◽  
Magnetic Properties ◽  
Nickel Alloy ◽  
Traditional Approach ◽  
Major Constituent ◽  
Open Questions ◽  
Field Fluctuations ◽  
Iron Nickel ◽  
Diamond Anvil

<p>Taenite, an iron-nickel alloy with 20-40 at% nickel, is a major constituent of iron meteorites that have been used to infer planetary core compositions. Many aspects of its magnetic properties are controversial, particularly near the Invar (“invariable”) composition around 36 at% nickel. Open questions include the conditions under which magnetism is lost, so to address this particular controversy, we undertook a combined magnetic remanence and Mössbauer study of synthetic taenite at high pressure. We synthesised polycrystalline iron-nickel alloy with 38 at% nickel, loaded the sample into a diamond anvil cell and collected Mössbauer spectra during decompression from 20 GPa. Our results show a clear loss of magnetism, but at pressures that differ considerably depending on the fitting model. The pressure obtained using the traditional approach involving a magnetic field distribution conflicts with results obtained from other methods, while a simple model based on magnetic field fluctuations gives results that are consistent with other data. Comparison of data from all methods provides insight that can be applied to planetary magnetism.</p>

scholarly journals Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3034
Author(s):  
Norhan Nady ◽  
Noha Salem ◽  
Marwa A. A. Mohamed ◽  
Sherif H. Kandil
Keyword(s):  
Magnetic Properties ◽  
Nickel Alloy ◽  
Metal Concentration ◽  
Nickel Alloys ◽  
Alkaline Media ◽  
Reaction Volume ◽  
Total Metal Concentration ◽  
Total Metal ◽  
Iron Nickel ◽  
Iron Nickel Alloys

Iron-nickel alloy is an example of bimetallic nanostructures magnetic alloy, which receives intensive and significant attention in recent years due to its desirable superior ferromagnetic and mechanical characteristics. In this work, a unique starfish-like shape of an iron-nickel alloy with unique magnetic properties was presented using a simple, effective, high purity, and low-cost chemical reduction. There is no report on the synthesis of such novel shape without complex precursors and/or surfactants that increase production costs and introduce impurities, so far. The synthesis of five magnetic iron-nickel alloys with varying iron to nickel molar ratios (10–50% Fe) was undertaken by simultaneously reducing Fe(II) and Ni(II) solution using hydrazine hydrate as a reducing agent in strong alkaline media for 15 min at 95–98 °C. The effect of reaction volume and total metal concentration on the properties of the synthesized alloys was studied. Alloy morphology, chemical composition, crystal structure, thermal stability, and magnetic properties of synthesized iron-nickel alloys were characterized by means of SEM, TEM, EDX, XRD, DSC and VSM. ImageJ software was used to calculate the size of the synthesized alloys. A deviation from Vegard’s law was recorded for iron molar ration higher than 30%., in which superstructure phase of FeNi3 was formed and the presence of defects in it, as well as the dimensional effects of nanocrystals. The saturation magnetization (Ms), coercivity (Hc), retentivity (Mr), and squareness are strongly affected by the molar ratio of iron and nickel and reaction volume as well as the total metal concentration.

ISO-ELASTIC

Alloy Digest ◽  
1957 ◽  
Vol 6 (8) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Low Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Temperature Coefficient ◽  
Nickel Alloy ◽  
Modulus Of Elasticity ◽  
Heat Treating ◽  
Precision Instrument ◽  
Iron Nickel

Abstract ISO-ELASTIC is an iron-nickel alloy having low temperature coefficient of the modulus of elasticity. It is suitable for precision instrument springs. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and machining. Filing Code: Fe-14. Producer or source: John Chatillon & Sons.

NCF 3015 ALLOY

Alloy Digest ◽  
1999 ◽  
Vol 48 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Nickel Alloy ◽  
Heat Treating ◽  
Engine Valve ◽  
Good Strength ◽  
Iron Nickel

Abstract NCF 3015 alloy is an iron nickel alloy that is precipitation hardened and has good strength and corrosion resistance to 760 C (1400 F). It is commonly used for engine valve applications. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on forming, heat treating, and machining. Filing Code: SS-765. Producer or source: Carpenter.

Precision Laser Welding of Silica Glass with Iron-Nickel Alloy

2021 ◽  
Author(s):  
T. O. Lipat’eva ◽  
S. S. Fedotov ◽  
A. S. Lipat’ev ◽  
S. V. Lotarev ◽  
G. Yu. Shakhgil’dyan ◽  
...  
Keyword(s):  
Laser Welding ◽  
Nickel Alloy ◽  
Silica Glass ◽  
Iron Nickel
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