TY - JOUR
T1 - Mechanical Grinding and Reforming Process of the Pb-substituted 2223 Phase
AU - Takada, Jun
AU - Nagae, Masahiro
AU - Kusano, Yoshihiro
AU - Nanbav, Tokuro
AU - Takano, Mikio
PY - 1994
Y1 - 1994
N2 - Mechanical grinding and reforming process of the Pb-substituted 2223 phase has been studied for the monophasic samples with a composition of Bi0.9Pb0.2SrCaCu1.6O2. The 2223 phase changes to ultla-fine powder by full grinding, exhibiting no magnetic response, while the ultra-fine powder and the small 2223 crystals coexist in samples ground for short periods. Some second phases were formed in the ground powder subjected to heating at temperatures between 500° and 800°C. On the other hand, annealing of the bulk samples below 800°C leads to precipitation of the 3321 phase identified as Sr2.5Bi0.5Pb3Ca2CuO2. Precipitation of second phases in the coexistent powder was interpreted by those in ultra-fine powder and bulk samples.
AB - Mechanical grinding and reforming process of the Pb-substituted 2223 phase has been studied for the monophasic samples with a composition of Bi0.9Pb0.2SrCaCu1.6O2. The 2223 phase changes to ultla-fine powder by full grinding, exhibiting no magnetic response, while the ultra-fine powder and the small 2223 crystals coexist in samples ground for short periods. Some second phases were formed in the ground powder subjected to heating at temperatures between 500° and 800°C. On the other hand, annealing of the bulk samples below 800°C leads to precipitation of the 3321 phase identified as Sr2.5Bi0.5Pb3Ca2CuO2. Precipitation of second phases in the coexistent powder was interpreted by those in ultra-fine powder and bulk samples.
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U2 - 10.2497/jjspm.41.396
DO - 10.2497/jjspm.41.396
M3 - Article
AN - SCOPUS:0028421412
VL - 41
SP - 396
EP - 399
JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
SN - 0532-8799
IS - 4
ER -