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- W2005995811 abstract "The crystallization effects of boron (B) powder on the phase, full width at half maximum (FWHM) values, and critical properties were investigated for in-situ reacted MgB2 bulk superconductors. The semi-crystalline B powder was heat-treated at different temperatures of 1000, 1300 and 1500˚C for 5 hours in an Ar atmosphere. Then, using as-received and heat-treated B powders, the MgB2 samples were prepared at 600˚C for 40 hours in an Ar atmosphere. As the heat-treatment temperature of the B powder increased, both the particle size of the B powder and crystalline phase increased. In the case of MgB2 samples using B powders heat-treated at above 1300˚C, unreacted magnesium (Mg) and B remained due to the improved crystallinity of the B powder. As the heat-treatment temperature of B powder increased, the critical current density of MgB2 decreased continuously due to the reduction of grain boundary density and superconducting volume caused by unreacted Mg and B." @default.
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- W2005995811 date "2014-09-01" @default.
- W2005995811 modified "2023-10-18" @default.
- W2005995811 title "Effect of Heat-Treatment on the Crystallization of B Powder and Critical Current Density Property of MgB2 Superconductor" @default.
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- W2005995811 doi "https://doi.org/10.3740/mrsk.2014.24.9.465" @default.
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