scholarly journals Nanocrystalline materials for high temperature soft magnetic applications: A current prospectus

1999 ◽  
Vol 22 (3) ◽  
pp. 495-501 ◽  
Author(s):  
M E McHenry ◽  
M A Willard ◽  
H Iwanabe ◽  
R A Sutton ◽  
Z Turgut ◽  
...  
Keyword(s):  
High Temperature ◽  
Nanocrystalline Materials ◽  
Soft Magnetic ◽  
Magnetic Applications ◽  
A Current

FERROPERM

Alloy Digest ◽  
1993 ◽  
Vol 42 (4) ◽  
Keyword(s):  
Fracture Toughness ◽  
High Temperature ◽  
Physical Properties ◽  
Saturation Magnetization ◽  
Pure Iron ◽  
Magnetic Alloy ◽  
High Saturation Magnetization ◽  
High Temperature Annealing ◽  
Soft Magnetic ◽  
Soft Magnetic Alloy

Abstract Ferroperm is a soft magnetic alloy that contains 1% aluminum. This addition of aluminum combined with high-temperature annealing increases permeability and reduces coercivity without decreasing the high-saturation magnetization of pure iron. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming. Filing Code: FE-99. Producer or source: NKK Corporation.

Sample Preparation of Aluminum Bridge Test Vehicles for Tem In-Situ Crystallographic Studies of Electromigration

1987 ◽  
Vol 115 ◽  
Author(s):  
W. E. Rhoden ◽  
J. V. Maskowitz ◽  
D. R. Kitchen ◽  
R. E. Omlor ◽  
P. F. Lloyd
Keyword(s):  
High Temperature ◽  
Sample Preparation ◽  
Integrated Circuit ◽  
Circuit Reliability ◽  
Test Vehicle ◽  
Aluminum Films ◽  
Current Densities ◽  
Integrated Circuit Reliability ◽  
A Current

IntroductionElectromigration in aluminum films has been identified as an increasing concern for integrated circuit reliability. Electromigration is the mass transport of atoms in a conductor under a current stress. Electromigration occurs in conductors experiencing current densities greater than 105 A/cm2 and is accelerated by high temperature. The damage to aluminum films manifests itself in the formation of voids, hillocks and whiskers along the conductor. This paper presents a test vehicle preparation procedure which can be used to investigate electromigration.

Viewpoint on the manuscript by Zachary S. Hartwig et al “VIPER: An industrially scalable high current, high temperature superconductor cable” 2020 Supercond. Sci. Technol. 33

2021 ◽  
Author(s):  
Michael Parizh
Keyword(s):  
High Temperature ◽  
High Performance ◽  
High Temperature Superconductor ◽  
High Current ◽  
A Current

Abstract HTS tokamak SPARC is under development by the team lead by CFS, Cambridge, MA. The magnet will have toroidal coils operating at 20 T at a current in the 25 to 40 kA range. The ViewPoint describes VIPER, an advanced TSTC-based HTS cable that has a potential to meet all the criteria required for the HTS tokamak. If proven to be successful, the cable approach promises long lengths, hundreds of meters, of the high-performance cable with predictable and repeatable properties.

Role of Silicon in PM Processed Soft Magnetic Alloy

2010 ◽  
Vol 307 ◽  
pp. 13-19
Author(s):  
Deepika Sharma ◽  
Kamlesh Chandra ◽  
Prabhu Shankar Misra
Keyword(s):  
High Temperature ◽  
Atmospheric Oxygen ◽  
Hydrogen Atmosphere ◽  
Soft Magnetic Materials ◽  
Magnetic Alloy ◽  
Soft Magnetic ◽  
Soft Magnetic Alloy ◽  
Cold Shortness ◽  
Powder Particles

Iron-Phosphorus based soft magnetic materials are known for their hot and cold shortness. The present investigation deals with the development of high-density Fe-P based alloys in the form of very thin sheets (0.1mm) by proper soaking of them at a high temperature so as to eliminate Iron-Phosphide eutectic and bring the phosphorus entirely into solution in the iron. It has also been possible to eliminate the use of a hydrogen atmosphere during sintering by using carbon to form CO gas within the compact by reaction with the oxygen of the iron powder particles. A glassy ceramic coating applied over the compact serves as a protective coating in order to avoid atmospheric oxygen attack over the compact held at high temperature. The Fe-0.3wt% P- 0.4wt% Si alloy so formed yielded coercivities as low as 0.42 Oe, resistivities as high as 28.4 µΩcm and total losses as low as 0.132 W/Kg. Such a combination of properties may make the alloy suitable for application in magnetic relays and transformer cores.

Electrochemical Performance of La0.7Sr0.3Cu1-xFexO3-δ as Cathode Material in IT-SOFCs

2010 ◽  
Vol 160-162 ◽  
pp. 666-670
Author(s):  
Min Zhang Zheng ◽  
Xiao Mei Liu
Keyword(s):  
Electrical Conductivity ◽  
High Temperature ◽  
Cathode Material ◽  
Single Phase ◽  
Cathodic Polarization ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cathodic Overpotential ◽  
A Current

To obtain more detail information about the cathode of La0.7Sr0.3Cu1-xFexO3-δ（x= 0.1,0.3,0.5,0.7,0.9）in IT-SOFCs, the cathode material La0.7Sr0.3Cu1-xFexO3-δ（x=0.1, 0.3, 0.5, 0.7, 0.9）was synthesized by a sol-gel method. X-ray diffraction revealed it to be form a single phase of perovskite. The high temperature electrical conductivity was measured by using the four-point dc technique, and cathodic overpotential with SDC（Sm0.15Ce0.85O1.925） electrolyte support was measured by using a current-interruption technique. The investigation of electrocheimical properties suggested that La0.7Sr0.3Cu0.7Fe0.3O3-δ has the highest electrical conductivity and the lowest cathodic polarization. Using La0.7Sr0.3Cu0.7Fe0.3O3-δ as cathode and 65%NiO/SDC as anode based on SDC electrolyte one can obtain higher current density and power density at intermediate temperatures, La0.7Sr0.3Cu0.7Fe0.3O3-δ is considered to be a possible cathode adapted to IT-SOFCs.

Measurements and Simulations of Lateral PNP Transistors in a SiC NPN BJT Technology for High Temperature Integrated Circuits

2011 ◽  
Vol 679-680 ◽  
pp. 758-761 ◽  
Author(s):  
Luigia Lanni ◽  
Reza Ghandi ◽  
Martin Domeij ◽  
Carl Mikael Zetterling ◽  
Bengt Gunnar Malm ◽  
...  
Keyword(s):  
High Temperature ◽  
Integrated Circuits ◽  
High Voltage ◽  
Current Gain ◽  
A Current

In this work, a 4H-SiC lateral PNP transistor fabricated in a high voltage NPN technology has been simulated and characterized. The possibility of fabricating a lateral PNP with a current gain larger than 1 has been investigated. Device and circuit level solutions have been performed.

Experimental Study of High Temperature Hydrozing Annealing 1J50 Alloy's Magnetic Properties

2013 ◽  
Vol 135 (6) ◽  
Author(s):  
Yingtao Zhang ◽  
Gang Wang ◽  
Zhenguo Nie ◽  
Wankai Shi ◽  
Yiming Rong
Keyword(s):  
Magnetic Properties ◽  
High Temperature ◽  
Process Parameters ◽  
Quantitative Research ◽  
Annealing Process ◽  
National Standards ◽  
Magnetic Alloy ◽  
Soft Magnetic ◽  
Soft Magnetic Alloy ◽  
Microstructure And Magnetic Properties

The good DC magnetic properties can be achieved for 1J50 soft magnetic alloy by applying high temperature hydrogen annealing. Annealing process parameters, e.g., atmosphere, soaking temperature, and time, are critical to soft magnetic properties. Qualitative results had been done for years. However a quantitative research among process parameters, microstructure, and magnetic properties can be more comprehensive and specific. In this study, a serial of experiments for 1J50 samples under the Chinese national standards. The influence of annealing temperature and socking time on DC magnetic properties and microstructure of the samples has been investigated on DC magnetic properties and microstructure of samples. The result shows that annealing process parameters have a nonlinear effect on the development of material microstructure and magnetic properties. Furthermore, the models among magnetic property, grain size, and process parameters have been built to quantitatively describe the interrelationship in between.

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