Preparation of composite particles of bulk Ba2YCu3O7‐Xby electrostatic adhesion process
作者:
Yasumasa Takao,
Masanobu Awano,
Yoshitaka Kuwahara,
期刊:
AIChE Journal
(WILEY Available online 1997)
卷期:
Volume 43,
issue S11
页码: 2616-2623
ISSN:0001-1541
年代: 1997
DOI:10.1002/aic.690431304
出版商: American Institute of Chemical Engineers
数据来源: WILEY
摘要:
AbstractElectrostatic adhesion processes are used in preparing composite aerosol particles with the electrostatic adhesion force acting between electropositively‐charged and electronegatively‐charged particles. This process enables one to disperse the core and subcomponent particles more uniformly and to control the amounts of subcomponent particles adhered to the surface of individual core particles by adjusting the charging voltage. Using the composite particles prepared by the electrostatic adhesion process as a starting powder for sintering, a composite bulk body of the Ba2YCu3O7‐Xoxide superconductor with BaZrO3inclusions is produced. BaZrO3particles with diameters less than 100 nm are uniformly dispersed in the Ba2YCu3O7‐Xmatrix. The composite bulk body shows improvement in critical current density, which is based on the uniform dispersion of fine BaZrO3particles as magnetic flux pinning centers. These advantages are attributed to the uniform dispersion of BaZrO3over the whole starting
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