Cu-Ag wire pulsed magnets with and without internal reinforcements

Asano, T.; Sakai, Yoshikazu; Oshikiri, Mitsutake; Inoue, Kiyoshi; Maeda, Hiroshi; Heremans, G.; Bockstal, L. Van; Li, L.; Herlach, F.

doi:10.1109/20.305685

Cited by 20 publications

(6 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…UFG bulk metals and composites are considered very attractive structural materials since they are significantly stronger than their coarse-grained counterparts and retain good ductility. Additionally, UFG metals have improved corrosion resistance and potential for superplasticity at high strain rates and low temperatures [16,17]. Nevertheless, there has been few works on the production of Cu-Ag microcomposites with UFG microstructure by SPD.…”

Section: Introductionmentioning

confidence: 99%

High-strength and high-conductive Cu/Ag multilayer produced by ARB

Ghalandari

Moshksar

2010

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

High-strength and high-conductive Cu/Ag multilayer produced by ARB

Ghalandari

Moshksar

2010

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…In recent years, pulsed magnets for fields up to 70 T with long pulse duration have been developed [1][2][3], and the design of magnets for the 70-100 T range is in progress [4]. All these magnets work with a pulse duration of the order 10 ms (half-period of a damped sine wave).…”

Section: Introductionmentioning

confidence: 99%

Magnetic and thermal diffusion in pulsed high-field magnets

Herlach

1998

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

The coupled partial differential equations for magnetic and thermal diffusion are solved numerically on a personal computer. The evolution of the field and temperature profiles in each layer of the coil is calculated, taking into account the skin effect, magnetoresistance and heat conduction. This is then used to calculate the pulse shape of the capacitor discharge which energizes the coil. The calculated results are in good agreement with test results for a large range of different coils; this provides useful insight for optimized coil design.

show abstract

“…This confirms the validity of the model used for the calculation as well as the reproducibility of the elaborate manufacturing process. As compared to other high-performance coils reported in the literature [4,15,18,25,35], our design is more economical (using less of the expensive high-strength wire), it is comparatively easy to manufacture and has the potential of a longer service life in the 70-75 T range.…”

Section: Discussionmentioning

confidence: 91%

“…This is an excellent combination of strength and conductivity; it was introduced in pulsed coil design by Foner [15,16]. Subsequently, Cu-Ag microcomposite wire was developed in Japan [17]; it was used to develop coils that generated the highest fields at the time [18]. A less expensive strong wire with excellent properties was developed at Oxford; this is soft copper with a stainless steel mantle [19].…”

Section: Introductionmentioning

confidence: 99%

Development of reliable 70 T pulsed magnets

Lagutin¹,

Rosseel²,

Herlach

et al. 2003

Meas. Sci. Technol.

View full text Add to dashboard Cite

A capacitor-driven pulsed magnet coil has been designed to generate fields in the 70-75 T range, with a life expectancy of at least 100 pulses, thus qualifying as a '75 T class user magnet'. The bore is 10 mm and the rise time used in our experiments is 4 ms. The coil consists of two coaxial sections: the inner section, where stresses are highest, is made with CuNb microcomposite wire and optimized Zylon reinforcement; the outer section is made with soft copper and glass fibre composite. In the inner section, the stress in each layer is self-contained, while the stresses induced in the outer section are transmitted to a thick shell made from steel and carbon fibre composite. The cross section of the copper wires is adjusted to redistribute the heating evenly between the inner and the outer section. Another innovative design feature is a system for axial compression that can be easily retightened during coil training. Two nearly identical coils were manufactured and tested to 72 T; this is a limit imposed due to overheating when using our 10 kV, 0.5 MJ capacitor bank (at an energy of 380 kJ). At 75 T, the calculated von Mises stress in the Zylon composite is 2.6 GPa, well below the UTS of more than 3 GPa, and the CuNb wire is still in an elastic state.

show abstract

Cu-Ag wire pulsed magnets with and without internal reinforcements

Cited by 20 publications

References 8 publications

High-strength and high-conductive Cu/Ag multilayer produced by ARB

High-strength and high-conductive Cu/Ag multilayer produced by ARB

Magnetic and thermal diffusion in pulsed high-field magnets

Development of reliable 70 T pulsed magnets

Contact Info

Product

Resources

About