Abstract




 
   

IJE TRANSACTIONS B: Applications Vol. 22, No. 2 (August 2009) 161-168   

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  PULSE REVERSE ELECTRODEPOSITION OF SPHERICAL NI-MWCNT COMPOSITE SKEIN
 
 
M. Attarchi*

Materials and Energy Research Center
P.O. Box 31787-316, Karaj, Iran
attarchi@gmail.com

S.K. Sadrnezhaad

Center of Excellence for Production of Advanced Materials, Department of Materials Science and Engineering
Sharif University of Technology, P.O. Box 11365-9466, Tehran, Iran
Materials and Energy Research Center, P.O. Box 14155-4777, Tehran, Iran
sadrnezh@sharif.edu

* Corresponding Author
 
 
( Received: September 24, 2007 – Accepted in Revised Form: February 19, 2007 )
 
 

Abstract    Watt’s bath and pulse reverse (PR) electrodeposition is used to produce spherical nickelmultiwall carbon nanotubes (Ni-MWCNT) of 2.00, 0.93, 1.63 and 6.71 μm diameter and a variety ofsize distributions. For 60 cycles, an absolute electrodeposition current of 18 A/dm2 is applied atcurrent ratios of ii = idissolution/ideposition = 0, 0.077, 0.200 and 0.368. A simple exponential equation isfitted to each pulse response by a resistance-capacitance (RC) simple model giving different timeconstants usable for diagnosing the effect of different parameters. Results show that PRelectrodeposition is capable of producing microspherical Ni-MWCNT composite skeins of differentdiameters and size distributions. This could be identified with the time constant of the process.

 

Keywords    Ni Composite, MWCNT, Spherical Skein Composite, Pulse Reverse Electrodeposition

 

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