THE EFFECT OF SOL-GEL TECHNIQUE ON THE ALUMINIUM SiCp COMPOSITE

Authors

  • Jamaliah Idris Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia.
  • N.J. Nee N.J. Nee Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia.

Keywords:

Sol Gel, Melal Matrix Composites, and Silicon Carbide Particulate, cold pressing

Abstract

Due to the low reactivity between the silicon carbide particulate (SiCp) and Aluminium
(AI) interface bonding strength. SiCp is treated by applying a coating on its surface. The
objective of this paper is to study the effect applying ceramic sol coating, which is silica
sol via sol gel technique onto SiCp The various concentrations applied are 2 wt%, 4 wt%
and IOwt% of silica sol. Aluminium metal matrix composite (AI-MMC) reinforced with
10% and 20% volume fraction of SiCp produced by powder metallurgy technique with
sintering temperature of 550 C was studied. The surface morphology of AI-MMC is
observed using SEM to examine the particle distribution, porosity and flow pattern. While
the degradation of SiCp due to interfacial reaction between the particulate and Al matrix is
examined by x-ray diffraction (XRD). SiC, degradation is evaluated by the ratio of the SiC
to the silicon (Si) XRD peak. From microstructure analysis, the specimens coated with
2 wt% and 4 wt% silica sol coating showed the best result which has uniform
reinforcement distribution. lower porosity and better flow pattern. For XRD analysis. the
best cotiing was obtained by 4 wt% silica sol concentration that has greater reaction
between Al and SiC .

References

I. Nyberg E., (1993), "Coating Particulate SiC in Aluminium Metal Matrix Composites." Key Engineering Materials Vol 77-78.Switzland: Trans Tech Publications. 349-356.

Donnell, G.O., Looney L., (2001), "Production of aluminium matrix composite components using conventional PM technology". (A303).292-30l

Nikolic L. and Radonjic L., (1997), "Effect of the Silica Sol-Gel Coating on the Properties of Glass Substrate." Ceramic International 24, pp. 547-552.

Shin et. ai (1997), "The effect ofConsoJidation Temperature on Microstructure and Mechanical Properties in Powder Metallurgy-Processed 2XXXX Aluminium Alloy Composites Reinforced with SiC Particulate".Metallurgical and Materials Transactions A, Volume 28A, pp. 2625-2637

Kindl B., et. al. (992), "The Control of Interface and Microstructure of SiC/AI Composites by Sol Gel Techniques ." Composites Science and technology, 43. pp. 85-93.

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Published

2018-04-24

How to Cite

Idris, J., & N.J. Nee, N. N. (2018). THE EFFECT OF SOL-GEL TECHNIQUE ON THE ALUMINIUM SiCp COMPOSITE. Jurnal Mekanikal, 19(1). Retrieved from https://jurnalmekanikal.utm.my/index.php/jurnalmekanikal/article/view/197

Issue

Section

Mechanical

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