Synthesis of cobalt boride nanoparticles using RF thermal plasma

Sooseok Choi, Lorico D.S. Lapitan, Yingying Cheng, Takayuki Watanabe

研究成果: Contribution to journalArticle査読

21 被引用数 (Scopus)


Nanosize cobalt boride particles were synthesized from the vapor phase using a 30 kW-4 MHz radio frequency (RF) thermal plasma. Cobalt and boron powder mixtures used as precursors in different composition and feed rate were evaporated immediately in the high temperature plasma and cobalt boride nanoparticles were produced through the quenching process. The X-ray diffractometry (XRD) patterns of cobalt boride nanoparticles prepared from the feed powder ratio of 1:2 and 1:3 for Co:B showed peaks that are associated with the Co2B and CoB crystal phases of cobalt boride. The XRD analysis revealed that increasing the powder feed rate results in a higher mass fraction and a larger crystalline diameter of cobalt boride nanoparticles. The images obtained by field emission scanning electron microscopy (FE-SEM) revealed that cobalt boride nanoparticles have a spherical morphology. The crystallite size of the particles estimated with XRD was found to be 18-22 nm.

ジャーナルAdvanced Powder Technology
出版ステータス出版済み - 1 2014

All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • 材料力学


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