scholarly journals Compare the Structural and Magnetic Softness of Nanocrystalline Alloy Fe74cu0.8nb2.7si15.5b7 at Annealing Tempareture 580°C and 650°C for Different Annealing Time

2017 ◽  
Vol 7 (3) ◽  
pp. 17-24
Author(s):  
Umasree Dhar et al., Umasree Dhar et al., ◽  
Keyword(s):  
Annealing Time ◽  
Nanocrystalline Alloy ◽  
Magnetic Softness

Superior magnetic softness at elevated temperature of Si-rich Fe-based nanocrystalline alloy

2012 ◽  
Vol 112 (8) ◽  
pp. 083922 ◽  
Author(s):  
Rui-min Shi ◽  
Zhi Wang ◽  
Yun-yun Jia ◽  
Zhuan-ping Wen ◽  
Bo-wen Wang ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Nanocrystalline Alloy ◽  
Magnetic Softness

New Fe-B-P-Cu Nanocrystalline Soft Magnetic Alloys with High Js Combined with Low Coercivity Hc

2012 ◽  
Vol 508 ◽  
pp. 99-105
Author(s):  
Ze Qiang Zhang ◽  
Parmanand Sharma ◽  
Akihiro Makino
Keyword(s):  
Raw Materials ◽  
Nanocrystalline Structure ◽  
Nanocrystalline Alloy ◽  
Amorphous Structure ◽  
Magnetic Alloy ◽  
Soft Magnetic ◽  
Soft Magnetic Alloy ◽  
Air Atmosphere ◽  
Fe Content ◽  
Magnetic Softness

Fe-Si-B Amorphous Alloys with Less than 80 at% Fe Are now in Practical Use due to their Excellent Magnetic Softness (Low Coercivity Hc) Combined with Rather High Saturation Magnetic Polarization (Js) which Basically Owing to the Lack of Intrinsic Magnetic Anisotropy and the High Fe Content, Respectively. In Order to Obtain High Js, High Fe Content Is Required. However, Alloys with High Fe Content Exceeding the Limit Usually Have the as-Quenched Structure Consisting of Coarse α-Fe Grains in the Amorphous Matrix, which Results in Inferior Magnetic Softness. We Have Developed a New Fe85.2B10P4Cu0.8 Nanocrystalline Soft Magnetic Alloy Ribbon (with 5 mm in Width and about 20 µm in Thickness) Made from Industrial Raw Materials in Air Atmosphere. The as-Quenched Structure of Fe85.2B10P4Cu0.8 Alloy Has Heterogeneous Amorphous Structure (a Large Amount of Extremely Small α-Fe Clusters in Addition to Amorphous Phase). Homogeneous Nanocrystalline Structure Composed of α-Fe Grains with a Size ~19 nm Was Realized by Crystallizing the Hetero-Amorphous Alloy. The Nanocrystalline Alloy Exhibit High Js ~ 1.83 T (Comparable to the Commercial Fe-3.5 Mass% Si Steel) and Extremely Low Hc ~ 6.0 A/m. Additionally the Alloy Has a Large Economical and Industrial Advantage of Lower Material Cost and Good Reproductivity, which Has a High Potential for the Power Applications.

Unique influence of heating rate on the magnetic softness of Fe81.5Si0.5B4.5P11Cu0.5C2 nanocrystalline alloy

2019 ◽  
Vol 471 ◽  
pp. 148-152 ◽  
Author(s):  
Lixian Jiang ◽  
Yan Zhang ◽  
Xing Tong ◽  
Tsuyoshi Suzuki ◽  
Akihiro Makino
Keyword(s):  
Heating Rate ◽  
Nanocrystalline Alloy ◽  
Magnetic Softness

TEM studies of tweed microstructures in annealed amelia albite

1990 ◽  
Vol 48 (4) ◽  
pp. 1064-1065
Author(s):  
Y. J. Kim ◽  
D. M. Henderson
Keyword(s):  
Annealing Time ◽  
The Other ◽  
Frequency Of Occurrence ◽  
Systematic Trend ◽  
Tweed Structure

Natural Amelia albite (Ab99.3An0.1Or0.6) annealed at 1073° and 924°C for various periods up to 140 days has been studied by NMR. TEM studies of the same sample revealed a distinct tweed microstructure in some samples annealed at both 1073°C and 924°C. On the whole, the quasi-regular tweed has a periodicity of 100 - 200 Å in both directions, one nearly normal to b* and the other approximately parallel to b*, which gives rise to two-directional streaking in SADP’s (Fig. 1 and 2). However, there are some differences in the tweed structure developed on annealing at 1073°C and at 924°C in albite.Albite samples annealed at 1073° show a systematic trend in their development of tweed structures: the regularity, periodicity, and frequency of occurrence increase with annealing time during the first 3 days, and then decrease gradually until no tweed microstructures are seen in samples annealed for more than 15 days. The tweed structure proceeds locally to form one-directional twin-like microstructures.

Effects of annealing temperature on the microstructure and initial permeability of nanocrystalline alloy Fe73.5Cu1Mo3Si13.5B9

1998 ◽  
Vol 13 (11) ◽  
pp. 3241-3246 ◽  
Author(s):  
X.Y. Zhang ◽  
J.W. Zhang ◽  
F.R. Xiao ◽  
J.H. Liu ◽  
K.Q. Zhang ◽  
...  
Keyword(s):  
Annealing Temperature ◽  
Nanocrystalline Alloy ◽  
Initial Permeability

An Experimental and Modeling Investigation of Tensile Creep Resistance in a Stable Nanocrystalline Alloy

2020 ◽  
Author(s):  
C. Kale ◽  
S. Srinivasan ◽  
B.C. Hornbuckle ◽  
R.K. Koju ◽  
K. Darling ◽  
...  
Keyword(s):  
Creep Resistance ◽  
Nanocrystalline Alloy ◽  
Tensile Creep
Sign in / Sign up

Export Citation Format

Share Document