TY - JOUR
T1 - Formation mechanism of titanium boride nanoparticles by RF induction thermal plasma
AU - Cheng, Yingying
AU - Shigeta, Masaya
AU - Choi, Sooseok
AU - Watanabe, Takayuki
N1 - Funding Information:
This work was partially supported by Grant-in-Aid for Scientific Research (C) (23560182) and the Information Center of Particle Technology, Japan . The present numerical results in this research were obtained using supercomputing resources at Cyberscience Center, Tohoku University.
PY - 2012/2/15
Y1 - 2012/2/15
N2 - The formation mechanism of titanium boride functional nanoparticles by the radio frequency induction thermal plasma was investigated by experiment and numerical analysis. The mixed powders of titanium and boron were injected into the plasma and evaporated immediately, and then nanoparticles were produced through the quenching process. The nanoparticle products were characterized by phase composition and crystalline diameter. TiB 2 was easily synthesized with a low powder feed rate in the boron-rich condition, because the molar ratio of evaporated and nucleated boron in plasma was enhanced. The prepared titanium boride nanoparticles had the average crystalline diameter ranging from 10 to 30nm, and it was reduced with decreasing the powder feed rate and titanium content in the raw material due to abundant number of boron nuclei. This paper demonstrates the feasibility of the control of titanium boride nanoparticles' crystalline mean diameter and phase composition with different raw material condition in the RF induction thermal plasma synthesis.
AB - The formation mechanism of titanium boride functional nanoparticles by the radio frequency induction thermal plasma was investigated by experiment and numerical analysis. The mixed powders of titanium and boron were injected into the plasma and evaporated immediately, and then nanoparticles were produced through the quenching process. The nanoparticle products were characterized by phase composition and crystalline diameter. TiB 2 was easily synthesized with a low powder feed rate in the boron-rich condition, because the molar ratio of evaporated and nucleated boron in plasma was enhanced. The prepared titanium boride nanoparticles had the average crystalline diameter ranging from 10 to 30nm, and it was reduced with decreasing the powder feed rate and titanium content in the raw material due to abundant number of boron nuclei. This paper demonstrates the feasibility of the control of titanium boride nanoparticles' crystalline mean diameter and phase composition with different raw material condition in the RF induction thermal plasma synthesis.
KW - Experiment
KW - Nanoparticle synthesis
KW - Numerical analysis
KW - RF induction thermal plasma
KW - Titanium boride
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U2 - 10.1016/j.cej.2011.12.040
DO - 10.1016/j.cej.2011.12.040
M3 - Article
AN - SCOPUS:84856523362
SN - 1385-8947
VL - 183
SP - 483
EP - 491
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -