Effect of Silicon Particle Size on Synthesis and Crystallinity of β-Silicon Carbide Particles

Woo Teck Kwon; Soo Ryong Kim; Young Hee Kim; Yoon Joo Lee; J.Y. Won; Sea Cheon Oh

doi:10.4028/www.scientific.net/DDF.353.239

Paper Titles

Micro Arc Oxidation of AZ91 Magnesium Alloy – Effect of Organic Compounds in the Electrolyte
p.217

Nitrogen Diffusion in Niobium under Low Pressure
p.223

Microstructure of Sodium or Potassium Added Mg-Ni Eutectic Alloy
p.228

Characterization of LSCO|BCZY|LSCO for Potential Application in IT-SOFC
p.233

Effect of Silicon Particle Size on Synthesis and Crystallinity of β-Silicon Carbide Particles
p.239

The Synthesis of High-Surface Area Silicon Carbide by Conversion Method Using Carbosilane Polymer
p.244

Effect of Hard Coatings on Surface Gray Iron on Fracture Toughness
p.248

Effect of Heat Treatment on Microstructure and Mechanical Property of Diamonds Substrates Brazed with Active Filler Metal
p.254

Effect of Intermetallics on Pt-Al Surface Coatings Colour
p.259

HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 353Effect of Silicon Particle Size on Synthesis and...

Effect of Silicon Particle Size on Synthesis and Crystallinity of β-Silicon Carbide Particles

Abstract:

β-SiC particles were synthesized using silicon powder and carbon black at 1300°C. The effect of grinding the silicon powder raw material into smaller particles on the synthesis and crystallinity of the SiC particles was investigated. The size of the silicon particles decreased and the surface of the silicon particles increasingly oxidized into silicon oxide with increasing grinding time, thus decreasing the yield of SiC because of the higher SiO₂ content in the ground silicon powder, since SiO₂ transforms into SiC at a higher temperature than does silicon. Although the sizes of the silicon particles in the raw materials were different, all the synthesized SiC crystallites showed similar size. Transmission electron microscopy-energy dispersive X-ray spectroscopy analysis showed that although most of the synthesized SiC particles were smaller than 100 nm, the primary SiC particles had aggregated, and some unreacted silicon was observed inside the large aggregated SiC particles.