ENHANCED MANUFACTURING TECHNIQUE OF CELLULAR GLASS-CERAMIC USING THE MICROWAVE ENERGY

  • Lucian Paunescu Daily Sourcing & Research SRL Bucharest
  • Marius Florin Dragoescu University POLITEHNICA of Bucharest
  • Felicia Cosmulescu Cosfel Actual SRL Bucharest
Keywords: cellular glass-ceramic, microwave, foaming, glass waste, silicon carbide, mixed heating

Abstract

The paper presents experimental results aiming the enhanced manufacturing technique of cellular glass-ceramic using a mixed microwave heating method (predominantly direct and partially indirect).  A SiC and Si3N4 ceramic tube with a wall thickness of 3 mm was used as a screen placed between the microwave radiation source and the material subjected to heating. The optimal sample was made by sintering at 980 ºC of 87.5% glass waste, 9.5% coal ash, 3% silicon carbide and 10% water addition. The product had the apparent density of 0.24 g/cm3, porosity of 88%, thermal conductivity of 0.052 W/m·K and compressive strength of 1.25 MPa. The material microstructure was homogeneous, with pores uniformly distributed, having the size between 0.4-1.2 mm.

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Published
2020-12-31
How to Cite
Paunescu, L., Dragoescu, M., & Cosmulescu, F. (2020). ENHANCED MANUFACTURING TECHNIQUE OF CELLULAR GLASS-CERAMIC USING THE MICROWAVE ENERGY. Nonconventional Technologies Review, 24(4). Retrieved from http://revtn.ro/index.php/revtn/article/view/319

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