Articles
  • The effect of Carbon on Si to SiC ratio in Si-SiC composite from natural sand

  • Chutima Kaemkita,b, Sutham Niyomwasb,d,* and Tawat Chanadeec,d

  • aDepartment of Mining and Materials Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
    bDepartment of Mechanical Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla 90110 ,Thailand
    cDepartment of Materials Science and Technology, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110 ,Thailand
    dCeramic and Composite Materials Engineering Research Group (CMERG), Center of Excellence in Metal and Material Materials Engineering (CEMME)), Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand

Abstract

Silicon-Silicon Carbide (Si-SiC) composite particles were synthesized by self-propagating high temperature synthesis (SHS) from a powder mixture of natural sand with activated carbon and magnesium (SiO2-C-Mg). The Si-SiC ratio in Si-SiC composites was manipulated via the carbon mole ratio in the precursor mixture were investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that the carbon molar ratio in the precursor mixture significantly affects the Si to SiC ratio in Si-SiC composite. The intensity of SiC were increased with an increase carbon mole ratio; the intensity of Si were gradually decreased and disappeared with a sufficient carbon amount consuming all of it. The synthesized product powders were leached in three steps with HCl: CH3COOH (1:1 v/v), 2M HCl and HF: H2O (1:1 v/v) solutions, respectively. The morphology showed SiC whisker. SiC whiskers have been one of the more popular reinforcing materials for both metal matrix composites and ceramic matrix composites, which can make these Si-SiC composites suitable for use as reinforcing fillers.


Keywords: Self-propagating high temperature synthesis, Combustion synthesis, Silicon-silicon carbide composite, Natural sand

This Article

  • 2020; 21(4): 460-464

    Published on Aug 30, 2020

  • 10.36410/jcpr.2020.21.4.460
  • Received on Feb 18, 2020
  • Revised on Mar 27, 2020
  • Accepted on Apr 2, 2020

Correspondence to

  • Sutham Niyomwas

  • bDepartment of Mechanical Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla 90110 ,Thailand
    dCeramic and Composite Materials Engineering Research Group (CMERG), Center of Excellence in Metal and Material Materials Engineering (CEMME)), Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
    Tel : +66-74-287-196

  • E-mail: sutham.n@psu.ac.th