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The effects of attrition and ball milling on the properties of magnesium diboride
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Dancer, Claire E. J., Prabhakaran, D., Crossley, A., Todd, R. I. and Grovenor, C. (2010) The effects of attrition and ball milling on the properties of magnesium diboride. Superconductor Science and Technology, Vol.23 (No.6). 065015. doi:10.1088/0953-2048/23/6/065015 ISSN 0953-2048.
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Official URL: http://dx.doi.org/10.1088/0953-2048/23/6/065015
Abstract
Commercially produced magnesium diboride powder was modified by attrition milling and ball milling in propan-2-ol for various durations. These powders were characterized by means of particle size distribution measurements using laser diffraction, impurity analysis using x-ray diffraction, energy dispersive spectroscopy and x-ray photoelectron spectroscopy, and scanning electron microscopy, and were then used to produce magnesium diboride samples through pressureless heat treatment at peak temperatures up to 1100 °C. X-ray diffraction, scanning electron microscopy, Vickers hardness measurements, and density measurements using the Archimedes method were used to characterize the properties of the samples, and a determination of their superconducting properties using the magnetization method was carried out. Magnesium diboride produced from powder milled under certain conditions had a higher Jc, mag than samples produced from as-purchased powder, but the relationship between the milling duration or energy and the superconducting performance is a complex one, affected by both the particle size and the impurity content of the starting powder.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | Superconductor Science and Technology | ||||
Publisher: | Institute of Physics Publishing Ltd. | ||||
ISSN: | 0953-2048 | ||||
Official Date: | 4 May 2010 | ||||
Dates: |
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Volume: | Vol.23 | ||||
Number: | No.6 | ||||
Page Range: | 065015 | ||||
DOI: | 10.1088/0953-2048/23/6/065015 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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