Effects of material processing in high temperature superconducting magnetic bearings
作者:
C. K. McMichael,
K. B. Ma,
M. W. Lin,
M. A. Lamb,
R. L. Meng,
Y. Y. Xue,
P. H. Hor,
W. K. Chu,
期刊:
Applied Physics Letters
(AIP Available online 1991)
卷期:
Volume 59,
issue 19
页码: 2442-2444
ISSN:0003-6951
年代: 1991
DOI:10.1063/1.105989
出版商: AIP
数据来源: AIP
摘要:
A study of the levitation forces related to superconducting bearing design was conducted on free‐sintered and melt‐textured Y1Ba2Cu3O7−&dgr;(YBCO) materials. Comparisons were made between free sintered, variously oriented, and randomly oriented melt‐textured materials. Magnetic force measurements were also conducted on oriented YBCO before and after neutron irradiation. A magnetic bearing of new design utilizing the phenomenon of flux pinning was then fabricated using melt‐textured YBCO with permanent magnets and a speed of 135 000 rpm was achieved. Rotational dissipation and magnetic stiffness measurements were performed on the bearing prototype.
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