Synthesis of niobium boride nanoparticle by RF thermal plasma

Yingying Cheng, Sooseok Choi, Takayuki Watanabe

研究成果: ジャーナルへの寄稿Conference article

4 引用 (Scopus)

抄録

Experimental study has been conducted to investigate the formation mechanism of transition metal boride nanoparticles in radio frequency thermal plasmas. The effect of nucleation temperature on the synthesis of niobium boride nanoparticles was investigated. The operating condition of powder feed rate plays an important role in the synthesis of boride nanoparticles. The mass fraction of niobium boride in the product was decreased with increasing powder feed rate. The main reason is that the evaporation time of niobium is long and the existence area of evaporated niobium is extended along with the thermal plasma flame at high powder feed rate. The diameter of the product increases along with the increase of powder feed rate due to increased monomer density in the plasma. In addition, high melting and boiling temperatures of niobium leads to high mass fraction over 96% of niobium boride in the collecting filter.

元の言語英語
記事番号012031
ジャーナルJournal of Physics: Conference Series
441
発行部数1
DOI
出版物ステータス出版済み - 1 1 2013
外部発表Yes
イベント11th Asia Pacific Conference on Plasma Science and Technology, APCPST 2012 and 25th Symposium on Plasma Science for Materials, SPSM 2012 - Kyoto, 日本
継続期間: 10 2 201210 5 2012

Fingerprint

borides
thermal plasmas
niobium
nanoparticles
synthesis
products
boiling
flames
radio frequencies
monomers
transition metals
melting
evaporation
nucleation
filters
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

これを引用

Synthesis of niobium boride nanoparticle by RF thermal plasma. / Cheng, Yingying; Choi, Sooseok; Watanabe, Takayuki.

:: Journal of Physics: Conference Series, 巻 441, 番号 1, 012031, 01.01.2013.

研究成果: ジャーナルへの寄稿Conference article

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abstract = "Experimental study has been conducted to investigate the formation mechanism of transition metal boride nanoparticles in radio frequency thermal plasmas. The effect of nucleation temperature on the synthesis of niobium boride nanoparticles was investigated. The operating condition of powder feed rate plays an important role in the synthesis of boride nanoparticles. The mass fraction of niobium boride in the product was decreased with increasing powder feed rate. The main reason is that the evaporation time of niobium is long and the existence area of evaporated niobium is extended along with the thermal plasma flame at high powder feed rate. The diameter of the product increases along with the increase of powder feed rate due to increased monomer density in the plasma. In addition, high melting and boiling temperatures of niobium leads to high mass fraction over 96{\%} of niobium boride in the collecting filter.",
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