SiC Platelets Synthesized by Powder-Heating Technique

Yong Qiang Meng; Zhi Min Bai; Chang Hong Dai; Bao Bao Zhang

doi:10.4028/www.scientific.net/KEM.336-338.939

Paper Titles

Preparation of Ultrafine β-Sialon Powder by Citrate Sol-Gel and Carbothermal Reduction Nitridation
p.927

Preparation of (Ca+M) (M=Mg, Yb, Sr) Co-Doped α-SiAlON Powders by Combustion Synthesis
p.930

Preparation of Sialon Using Fly Ash with High Content of Al₂O₃
p.933

Combustion Synthesis of Magnesium Silicon Nitride Powders in the Mg-Si-N System
p.935

SiC Platelets Synthesized by Powder-Heating Technique
p.939

Synthesis of Sialon-Mullite Composites Using Fly Ash by Carbon-Thermal Reduction Nitridation
p.942

Carbothermal Preparation of Ultra-Fine TiB₂ Powders Using Solution-Derived Precursors via Sol-Gel Method
p.944

Large-Scale Fabrication of Ti₃AlC₂ Powder with High-Purity
p.948

Study of Ti₃Si_1.2-xAl_xC₂ (x = 0~1.2) Solid Solution via X-Ray Diffraction
p.952

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SiC Platelets Synthesized by Powder-Heating Technique

Abstract:

A new method for producing silicon carbide platelets with low cost and high yield was introduced. The silicon carbide platelets were synthesized by powder-heating techniques with carbon black and SiO2 powder as raw materials and CoCl2 as catalyst. The starting mixtures were heated at a temperature in the range of 1800-2000°C for the duration of about 2-4h to produce substantially completely unagglomerated silicon carbide platelets with a thickness of 5-20μm and the average diameter of 50-200μm. Compared to the conventional heating, the powder-heating technique is advantageous of less investment on equipment, easy to manufacture and convenient to operate. Furthermore, it is very suitable for realizing the scaled production because of the lower synthesizing temperature, shorter reaction time and greater output.