A rapid heating and high magnetic field thermal analysis technique

AbstractA new thermal analysis technique is described that allows measurements to be performed on bulk samples at extreme heating and cooling rates and in high magnetic fields. High heating rates, up to 1000 °C min−1, are achieved through electromagnetic induction heating of a custom-built apparatus fitted with commercial thermal analysis heads and sensor. Rapid cooling rates, up to 100 °C min−1, are enabled by gas quenching and the small thermal mass of the induction furnace. The custom apparatus is designed to fit inside a superconducting magnet capable of fields up to 9 Tesla. This study demonstrates that the instrument is capable of collecting accurate thermal analysis data in high magnetic fields and rapidly acquiring data for dynamic processes. While the full potential of the technique is still unrealized, currently, it can provide insight into phenomena at time scales relevant to heat treatment in many industrial processes and into little understood effects of high magnetic field processing.

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Large volume liquid state scalar Overhauser dynamic nuclear polarization at high magnetic field

Physical Chemistry Chemical Physics ◽

10.1039/c9cp02997d ◽

2019 ◽

Vol 21 (38) ◽

pp. 21200-21204 ◽

Cited By ~ 3

Author(s):

Thierry Dubroca ◽

Sungsool Wi ◽

Johan van Tol ◽

Lucio Frydman ◽

Stephen Hill

Keyword(s):

Magnetic Field ◽

Nuclear Magnetic Resonance ◽

Magnetic Resonance ◽

Magnetic Fields ◽

High Magnetic Field ◽

Dynamic Nuclear Polarization ◽

Large Volume ◽

Liquid State ◽

Nuclear Polarization ◽

High Magnetic Fields

Dynamic Nuclear Polarization (DNP) can increase the sensitivity of Nuclear Magnetic Resonance (NMR), but it is challenging in the liquid state at high magnetic fields.

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Anomalous RF sputtering in a high magnetic field: the effect of high magnetic fields on the growth of Fe–Si–O films

Thin Solid Films ◽

10.1016/s0040-6090(01)00881-1 ◽

2001 ◽

Vol 389 (1-2) ◽

pp. 51-55 ◽

Cited By ~ 8

Author(s):

H.L Bai ◽

S Mitani ◽

Z.J Wang ◽

H Fujimori ◽

M Motokawa

Keyword(s):

Magnetic Field ◽

Magnetic Fields ◽

High Magnetic Field ◽

Rf Sputtering ◽

High Magnetic Fields

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Tuning the structure and properties of a multiferroic metal–organic-framework via growing under high magnetic fields

RSC Advances ◽

10.1039/c8ra00799c ◽

2018 ◽

Vol 8 (25) ◽

pp. 13675-13678 ◽

Cited By ~ 2

Author(s):

Lin Hu ◽

Zhe Wang ◽

Hui Wang ◽

Zhe Qu ◽

Qianwang Chen

Keyword(s):

Magnetic Field ◽

Magnetic Fields ◽

High Magnetic Field ◽

Metal Organic Framework ◽

High Magnetic Fields ◽

Structure And Properties ◽

Metal Organic ◽

Organic Framework

High magnetic field-induced synthesis has been demonstrated to tune the structure and properties of the multiferroic metal–organic framework [(CH3)2NH2][Mn(HCOO)3].

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Control of the Alloying Element Distribution in Al-Alloys by High Magnetic Fields

Materials Science Forum ◽

10.4028/www.scientific.net/msf.539-543.457 ◽

2007 ◽

Vol 539-543 ◽

pp. 457-462 ◽

Cited By ~ 4

Author(s):

Qiang Wang ◽

Xue Jun Pang ◽

Chun Jiang Wang ◽

Tie Liu ◽

Dong Gang Li ◽

...

Keyword(s):

Magnetic Field ◽

Magnetic Fields ◽

Physical Properties ◽

High Magnetic Field ◽

Element Distribution ◽

Field Conditions ◽

High Magnetic Fields ◽

Gradient Magnetic Field ◽

The Matrix ◽

Al Mg Alloys

The distribution and solidified structure of alloying elements are important for the quality and the properties of alloys. In the present study, the solidification behavior of aluminum-rich alloys is studied under various high magnetic field conditions, and the influences of uniform and gradient magnetic fields with different intensity and direction on the distribution and the morphology of solute elements of Al-Cu and Al-Mg alloys are investigated. It is found that because of the differences of the electromagnetic force (Lorentz and magnetization forces) acting on Cu element and Mg element with different physical properties in the matrix, the regularities of distribution for Cu element and Mg element are opposite just in the intracrystalline and intergranular under high uniform magnetic field condition, and not only the content but the distributions of Cu and Mg elements are obviously different under high gradient magnetic field conditions as well. It can be concluded that high magnetic field has different effect on the solute distribution in alloys with different physical properties such as density, susceptibility, conductivity, etc. And the experimental results indicate that it is possible to control the terminal solubility and morphology of the solute elements in alloys by high magnetic fields.

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Effects of a High Magnetic Field on the Solidification Behavior of Binary Al-Si and Ag-Cu Systems

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.421.792 ◽

2011 ◽

Vol 421 ◽

pp. 792-795

Author(s):

Tie Liu ◽

Yin Liu ◽

Qiang Wang ◽

Yan Wang ◽

Kai Wang ◽

...

Keyword(s):

Magnetic Field ◽

Magnetic Fields ◽

High Magnetic Field ◽

Room Temperature ◽

Solute Diffusion ◽

High Magnetic Fields ◽

Eutectic System ◽

Solidification Behavior ◽

Cu Alloys ◽

Binary Eutectic

To investigate the effect of high magnetic fields on the solidification behavior of binary eutectic system, solidification and quenching experiments of Al-11.8 wt.%Si and Ag-10 wt.%Cu alloys were carried out with and without an 8.8 T high magnetic field. It was found that the application of the high magnetic field could increase the concentration of Si in the primary Al and Cu in the primary Ag at their eutectic temperatures, but could not obviously affect the Si concentration in the primary Al at room temperature. The above increase can be attributed to the weakness of the solute diffusion at the liquid-solid interface during solidification caused by the high magnetic field.

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Structural and magnetic properties of high magnetic-field-assisted hydrothermal synthesized Bi6Fe2Ti3O18 particles

Modern Physics Letters B ◽

10.1142/s0217984920500438 ◽

2019 ◽

Vol 34 (03) ◽

pp. 2050043

Author(s):

Shengman Liu

Keyword(s):

Magnetic Field ◽

Magnetic Properties ◽

Magnetic Fields ◽

Hydrothermal Method ◽

High Magnetic Field ◽

Growth Behavior ◽

High Magnetic Fields ◽

Structural And Magnetic Properties ◽

Ferromagnetic Ordering ◽

The Magnetic Field

[Formula: see text] (BFTO) nanoparticles were successfully synthesized by hydrothermal method in high magnetic fields of 0T, 2T, 4T, and 8T. High magnetic field can greatly affect the growth behavior of BFTO particles. The magnetic fields promote the BFTO nanoplates to grow along (001) direction and form a high-index {115} facet. The BFTO samples prepared in different magnetic fields are paramagnetic with the presence of an antiferromagnetic (AFM) and ferromagnetic ordering, and the AFM interaction weakens when the magnetic field is increased. In particular, the magnetization of the as-prepared BFTO particles is slightly enhanced with the increase in magnetic fields arising from the increased amount of bipyramid particles in favor of [Formula: see text]–[Formula: see text] plane alignment parallel to the magnetic field.

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Phase Transformation in Fe-Based Alloys in High Magnetic Fields

Materials Science Forum ◽

10.4028/www.scientific.net/msf.475-479.301 ◽

2005 ◽

Vol 475-479 ◽

pp. 301-304 ◽

Cited By ~ 1

Author(s):

X.J. Hao ◽

H. Ohtsuka

Keyword(s):

Magnetic Field ◽

Phase Transformation ◽

Martensitic Transformation ◽

Magnetic Fields ◽

Maraging Steel ◽

High Magnetic Field ◽

Transformation Temperature ◽

High Magnetic Fields ◽

Martensitic Transformation Temperature ◽

Pearlitic Transformation

The effects of a high magnetic field on phase transformation behaviors and microstructures in Fe-based alloys have been extensively studied. It was found that a magnetic field accelerates ferritic and martensitic transformation, changes the morphology of the transformed microstructures and increases the A3 and A1 temperature. In a magnetic field of 10 Tesla, the A1 temperature increases by about 15°C for Fe-0.8C, the A3 temperature for pure Fe increases by about 8°C and the martensitic transformation temperature Ms in 18Ni maraging steel increases by 20°C. Ferrite grains are elongated and aligned along the direction of magnetic field in Fe-0.4C and Fe-0.6C alloys by ferritic transformation, but elongation was not found in pure Fe, Fe-0.05C alloy and Fe-1.5Mn-0.11C-0.1V alloy. Aligned structure was not found either by pearlitic transformation in Fe-0.8C alloy or by cementite precipitation from martensite.

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The National High Magnetic Field Laboratory, a User Facility in Support of Research in High Magnetic Fields

Advances in Cryogenic Engineering ◽

10.1007/978-1-4615-2522-6_48 ◽

1994 ◽

pp. 403-410

Author(s):

J. E. Crow ◽

D. Parkin ◽

H. J. Schneider-Muntau ◽

N. S. Sullivan

Keyword(s):

Magnetic Field ◽

Magnetic Fields ◽

High Magnetic Field ◽

High Magnetic Fields ◽

Field Laboratory ◽

User Facility ◽

Support Of Research

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Variation of Surface Tension of Water in High Magnetic Field

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.750-752.2279 ◽

2013 ◽

Vol 750-752 ◽

pp. 2279-2282 ◽

Cited By ~ 2

Author(s):

Long Chen ◽

Chuan Jun Li ◽

Zhong Ming Ren

Keyword(s):

Magnetic Field ◽

Surface Tension ◽

Magnetic Fields ◽

Hydrogen Bonds ◽

High Magnetic Field ◽

Field Intensity ◽

Magnetic Field Intensity ◽

High Magnetic Fields ◽

The Magnetic Field

The surface tension of water in high magnetic fields up to 10T was investigated with aid of the high-magnetic-field tensiometer (HMFT). It was found that the surface tension of water linearly varied with the magnetic field intensity and increased by 0.48mN/m or 0.65% in 10T. The increase of the surface tension of water could be attributed to the increase in the number and stabilization of the hydrogen bonds in the magnetic field.

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