Effect of Ambient Gas on the Particle Size of Copper Nanopowder Prepared By the Wire Explosion Technique

2010 ◽  
Author(s):  
Y. S. Lee ◽  
S. L. Yap ◽  
C. S. Wong ◽  
A. K. Yahya ◽  
Shah Alam
Keyword(s):  
Particle Size ◽  
Wire Explosion ◽  
Ambient Gas ◽  
The Wire

Copper Nanoparticle Synthesis By The Wire Explosion Technique

2009 ◽  
Author(s):  
Y. S. Lee ◽  
W. H. Tay ◽  
S. L. Yap ◽  
C. S. Wong ◽  
Z. Ahmad ◽  
...  
Keyword(s):  
Nanoparticle Synthesis ◽  
Copper Nanoparticle ◽  
Wire Explosion ◽  
The Wire

Effect of ambient gas species on the formation of Cu nanoparticles in wire explosion process

2012 ◽  
Vol 12 (5) ◽  
pp. 1345-1348 ◽  
Author(s):  
C.S. Wong ◽  
B. Bora ◽  
S.L. Yap ◽  
Y.S. Lee ◽  
H. Bhuyan ◽  
...  
Keyword(s):  
Cu Nanoparticles ◽  
Wire Explosion ◽  
Explosion Process ◽  
Ambient Gas

Stratification dynamics and the development of electrothermal instability at the wire explosion

2013 ◽  
Vol 58 (8) ◽  
pp. 1129-1137 ◽  
Author(s):  
R. B. Baksht ◽  
S. I. Tkachenko ◽  
V. M. Romanova ◽  
A. R. Mingaleev ◽  
V. I. Oreshkin ◽  
...  
Keyword(s):  
Wire Explosion ◽  
The Wire

Observation of the partial reheating of the metallic vapor during the wire explosion process for nanoparticle synthesis

2014 ◽  
Vol 104 (22) ◽  
pp. 223108 ◽  
Author(s):  
B. Bora ◽  
S. S. Kausik ◽  
C. S. Wong ◽  
O. H. Chin ◽  
S. L. Yap ◽  
...  
Keyword(s):  
Nanoparticle Synthesis ◽  
Wire Explosion ◽  
Explosion Process ◽  
The Wire ◽  
Metallic Vapor

Particle Size Controllability of Ambient Gas Species for Copper Nanoparticles Prepared by Pulsed Wire Discharge

2008 ◽  
Vol 47 (5) ◽  
pp. 3726-3730 ◽  
Author(s):  
Keiichi Murai ◽  
Yoshinori Tokoi ◽  
Hisayuki Suematsu ◽  
Weihua Jiang ◽  
Kiyoshi Yatsui ◽  
...  
Keyword(s):  
Particle Size ◽  
Copper Nanoparticles ◽  
Pulsed Wire Discharge ◽  
Ambient Gas

Microstructural characterization of laser-melted/roller-quenched dicalcium silicate

1988 ◽  
Vol 46 ◽  
pp. 582-583
Author(s):  
C. J. Chan ◽  
K. R. Venkatachari ◽  
W. M. Kriven ◽  
J. F. Young
Keyword(s):  
Particle Size ◽  
Raw Materials ◽  
Shape Change ◽  
Microstructural Characterization ◽  
Particle Size Effect ◽  
Dicalcium Silicate ◽  
Laser Melting ◽  
Uniform Size ◽  
Cell Shape Change ◽  
Wide Range

Dicalcium silicate (Ca2SiO4) is a major component of Portland cement. It has also been investigated as a potential transformation toughener alternative to zirconia. It has five polymorphs: α, α'H, α'L, β and γ. Of interest is the β-to-γ transformation on cooling at about 490°C. This transformation, accompanied by a 12% volume increase and a 4.6° unit cell shape change, is analogous to the tetragonal-to-monoclinic transformation in zirconia. Due to the processing methods used, previous studies into the particle size effect were limited by a wide range of particle size distribution. In an attempt to obtain a more uniform size, a fast quench rate involving a laser-melting/roller-quenching technique was investigated.The laser-melting/roller-quenching experiment used precompacted bars of stoichiometric γ-Ca2SiO4 powder, which were synthesized from AR grade CaCO3 and SiO2xH2O. The raw materials were mixed by conventional ceramic processing techniques, and sintered at 1450°C. The dusted γ-Ca2SiO4 powder was uniaxially pressed into 0.4 cm x 0.4 cm x 4 cm bars under 34 MPa and cold isostatically pressed under 172 MPa. The γ-Ca2SiO4 bars were melted by a 10 KW-CO2 laser.

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