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NANOMATERIALS FROM BALL MILLING

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NANOMATERIALS FROM BALL MILLING W. COURTNEY FEB 7, 2006 APPARATUS Mater. Sci. Engin. A 206, 1996, 24 Extended Milling Amorphization Impact Energy of Vibrating ... – PowerPoint PPT presentation

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Title: NANOMATERIALS FROM BALL MILLING


1
NANOMATERIALS FROM BALL MILLING
  • W. COURTNEY FEB 7, 2006

2
APPARATUS
  • Mater. Sci. Engin. A 206, 1996, 24

3
Chen et al, Phys. Rev. B 48,1993, 14
4
Extended Milling Amorphization
5
Ball Milling High energy Ball Milling
Milling time lt 1 hours 20-200 hours
Impact energy (W/g/ball) 0.001 0.2
Particle size mm mm (clusters)
Structural changes No Yes
Chemical reactions No Yes
Atmosphere No control Vacuum, gases
Temperature No control L-N2 -700 oC
6
Impact Energy of Vibrating Ball Mill
  • Mb Vmax f
  • I Mp

Chen et al, Phys. Rev. B 48,1993, 14
7
CHEMICAL REACTIONS DURING BALL MILLING
Ti (Zr, Fe, B) NH3 ? nano-TiN (nano-ZrN, FeN,
BN) Ti (Fe, Zr) O2 ? nano-TiO2 (nano-FeOx,
-ZrOy)
8
(No Transcript)
9
Nanotube Precursor created by ball milling
Nucleation structures Pentagons Micropores nan
osized metal particles Fe, Cr
Disordered carbon as C atom source
Appl. Phys. A, 76 (2003) p. 107-110
10
NANOTUBES CREATED FROM EXTENDED MILLING FOLLOWED
BY THERMAL ANNEALING
Chen et al, Phys. Rev. B 48,1993, 14
11
OTHER REFERENCES
  • Guo XM et al. Mechanochemical formation of novel
    catalyst for preparing carbon nanotubes.
  • Scripta Materialia. 48(8)1185-1188
  • Konya Z. et al, ,Large scale production of short
    functionalized carbon nanotubes.
  • Chemical Physics Letters. 360(5-6)429-435
  • Gao B. et al, Enhanced saturation lithium
    composition in ball-milled SWNTs.
  • Chemical Physics Letters. 327(1-2)69-75,
  • Kim YA. et al. Effect of ball milling on
    morphology of cup-stacked carbon nanotubes.
  • Chemical Physics Letters. 355(3-4)279-284
  • Pierard N. et al. Production of short carbon
    nanotubes with open tips by ball milling.
  • Chemical Physics Letters. 335(1-2)1-8, 2001 Feb
    16.
  • Li YB et al. Transformation of carbon nanotubes
    to nanoparticles by ball milling process.
  • Carbon. 37(3)493-497, 1999.
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