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Porous Bulk Specimens in C a O ‐ M g O ‐ S i O 2 Systems Using Steel Slag and Altered Additives by Conventional Sintering
Author(s) -
Faeghinia Aida
Publication year - 2014
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12233
Subject(s) - materials science , sintering , porosity , boric acid , perlite , flexural strength , wollastonite , sodium silicate , slag (welding) , calcium silicate , metallurgy , composite material , phosphate , phase (matter) , soda lime glass , brick , raw material , chemistry , physics , organic chemistry , nuclear physics
To obtain the porous, bulk, brick like samples the following mixtures were pressed and sintered at different temperatures: steel slag, sintering aids (soda lime glass, sodium phosphate), and common foaming additives (like dolomite, perlite). The bulk densities of final composites were from 1.3 to 2.41 g/cm 3 , and open porosities were from 15 to 40 vol%. The bending strengths of composites varied from 5.5 to 15.9 MPa. The final phase of sintered samples was forming of calcium magnesium silicate. The samples which had 80 wt% slag–5 wt% SiC–5 wt% perlite–5 wt% boric acid–5 wt% sodium phosphate showed the 40 vol% porosity and 6.7 ± 0.2 MPa bending strength.