The Effect of Reversing Current on the Properties of Copper and Electrolytic Copper Powder. II. The Apparent Density and Flowability of Powders

2004 ◽  
Vol 453-454 ◽  
pp. 399-404 ◽  
Author(s):  
K.I. Popov ◽  
M.G. Pavlović ◽  
Lj.J. Pavlović ◽  
V. Maksimović ◽  
E.R. Ivanović
2005 ◽  
Vol 494 ◽  
pp. 247-252 ◽  
Author(s):  
M.G. Pavlović ◽  
K.I. Popov ◽  
S.B. Krstić ◽  
Lj.J. Pavlović ◽  
E.R. Ivanović

The surface structure of powder particles, which allows free flow of copper powder, was examined. It has been shown that a sufficiently dense surface structure which permits free flow will be obtained if apparent density is higher than 2.2 – 2.3 g/cm3. Such a surface structure can be obtained by reversing current electrodeposition of powder at considerably lower apparent densities of powder due to selective dissolution of subparticles during anodic time of reversing current wave. The surface structure of copper powder particles is discussed and correlated with the lowest apparent density at which the copper powder can still flow.


2004 ◽  
Vol 69 (1) ◽  
pp. 43-51 ◽  
Author(s):  
Konstantin Popov ◽  
Snezana Krstic ◽  
Milutin Obradovic ◽  
Miomir Pavlovic ◽  
Ljubica Pavlovic ◽  
...  

The structure of the surface of copper powder particles is discussed and correlated with the lowest apparent density at which copper powder can still flow. It is shown that such structures can be easily obtained in the electrodeposition of powders in reversing current regimes.


2002 ◽  
Vol 67 (1) ◽  
pp. 61-67 ◽  
Author(s):  
Konstantin Popov ◽  
Ljubica Pavlovic ◽  
Evica Ivanovic ◽  
Velimir Radmilovic ◽  
Miomir Pavlovic

The possibility of depositing copper powders with different apparent density by changing the shape of reversing current wave is shown. The morphology and crystallinity of powder particles can be varied considerably by changing shape of the reversing current wave and, hence, the apparent density of powders. The relation of apparent density with particle morphology and structure was illustrated.


1997 ◽  
Vol 44 (6) ◽  
pp. 596-603 ◽  
Author(s):  
Noriyuki Wada ◽  
Yoshimitsu Kankawa ◽  
Yasunari Kaneko

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