Hot Isostatic Pressing of YBa sub 2 Cu sub 3 O sub 7--x

Hot isostatic pressing (HIPing) with an oxygen donor was studied as a method for processing bulk superconductors. Superconducting powder was derived from the calcination of nitrated Y sub 2 O sub 3 , CuO, and BaCO sub 3 powder. The powder was HIPed using pressures of 69, 138, and 207 MPa at 820 deg...

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Published in:Journal of the American Ceramic Society 1991-08, Vol.74 (8), p.2014-2017
Main Authors: Richards, K T, Benfer, R H
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Language:English
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description Hot isostatic pressing (HIPing) with an oxygen donor was studied as a method for processing bulk superconductors. Superconducting powder was derived from the calcination of nitrated Y sub 2 O sub 3 , CuO, and BaCO sub 3 powder. The powder was HIPed using pressures of 69, 138, and 207 MPa at 820 deg C. BaO sub 2 was used as an O donor during HIPing. The density, hardness, and Young's modulus of HIPed samples were higher than thoseof sintered control samples. Superconducting transition temperatures > 92K were achieved without post-HIP annealing of the samples in O. Graphs. 16 ref.--AA
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title Hot Isostatic Pressing of YBa sub 2 Cu sub 3 O sub 7--x
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