V Garnier et al 2000 Supercond. Sci. Technol. 13 602 doi:10.1088/0953-2048/13/5/333
V Garnier1, I Monot and G Desgardin
Show affiliationsThe effects of the calcination conditions (time, temperature, intermediate milling) on the kinetics of formation of Bi-2223 and on the grain size were studied using a powder precursor synthesized by the polymer matrix method. The samples were characterized by XRD and SEM analysis. The grain size and the kinetics of formation of Bi-2223 strongly depend on the calcination conditions and thus on the phase assemblages formed at the end of the calcination that determines the reactivity during sintering. The higher the calcination temperature is the larger the grain size. We have observed that 24 h of calcination at 820 °C without intermediate milling allows one to obtain 79% of Bi-2223 phase in 60 h of sintering at 835 °C.
Issue 5 (May 2000)
Received 8 December 1999
V Garnier et al 2000 Supercond. Sci. Technol. 13 602
Jürg Diemand et al. 2006 ApJ 649 1
Rob Legtenberg et al 1996 J. Micromech. Microeng. 6 320
Maritoni Litorja et al 2007 Metrologia 44 02002
Dominique Reymann 2003 Metrologia 40 01005
D T Burns et al 2007 Metrologia 44 06008
G Ratel et al 2004 Metrologia 41 06017
P J Allisy-Roberts et al 2007 Metrologia 44 06006
Ryan Barnett et al 2008 New J. Phys. 10 043030
M Vos and M R Went 2009 J. Phys. B: At. Mol. Opt. Phys. 42 065204