Volume 38, Issue 4 (Journal of Advanced Materials-Winter 2020)                   jame 2020, 38(4): 51-64 | Back to browse issues page

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Faeghinia A, Mardi H. Investigation of Glass- Steel Slag Foam Composite Sintering in Presence of SiC. jame 2020; 38 (4) :51-64
URL: http://jame.iut.ac.ir/article-1-1041-en.html
Ceramic division. Materials and Energy Research Center, Karaj, Iran. , aida.faeghinia@gmail.com
Abstract:   (3681 Views)
Amorphous steel slag was blended with different concentrations of waste glass (20, 40, 50, 60, 70 wt.%) and SiC to obtain a composite. According to Hot Stage Microscopy images, slag-glass composite contractions started at 1050 ºC. scanning electron microscope micrographs of slag-SiC (foaming agent) composite revealed tunnel-like porosities of 500 to 1000 microns. Gaseous products of carbide decomposition led to the formation of these tunnel-like porosities. By adding up to 50 wt. % of waste glass to this composite and sintering at 1200 ° C, the size of cavities decreased by 10 times and achieved 50 microns to form spherical cavities. By increasing glass content, the total porosity of slag-glass-SiC increased to 80 wt.% followed by a decrease in the strength to 3.2 MPa. Having an overall density of 0.8 g/cm3, the slag-glass composite could be classified as a porous foam material. Pseudo Waltonite phase was also detected in this composite after sintering.
Keywords: Slag, Glass, SiC, Sintering, Foam.
Full-Text [PDF 791 kb]   (626 Downloads)    
Type of Study: Research | Subject: Ceramics and refractory materials
Received: 2019/06/8 | Accepted: 2019/12/9 | Published: 2020/02/10

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