Science of Sintering 2010 Volume 42, Issue 3, Pages: 383-388
https://doi.org/10.2298/SOS1003383C
Full text (
755 KB)
Cited by
Glass-ceramics obtained by the crystallization of basalt
Cocić M. (Technical Faculty, Bor)
Logar M. (Mining and Geology Faculty, Belgrade)
Matović B. (Vinca Institute, Belgrade)
Poharc-Logar V. (Mining and Geology Faculty, Belgrade)
The possibility to obtain glass-ceramics from basalt from the locality on
Vrelo (Kopaonik mt.) is shown in this paper. The parent rock was ground to
fraction -0.4 +0.1 mm, and then melted at 1250 - 1300°C. The crystallization
melted bazaltic glass at 950°C during the time interval of 3 hours caused
synthesis of a glass-ceramic material with a microstructure that has
excellent mechanical properties according to the determined dynamic modulus
of elasticity and uniaxial compresive strength. The phase composition of the
obtained glass ceramic material was determined by XRPD using Rietveld
refinement and SEM. Two phases were found: pyroxene which corresponds to
omphacite of the composition (Na0.199 K0.180 Ca0.471
Mg0.249)1.1(Mg0.271Fe0.299Al0.430)1.0(Si1.704Ti0.046Al0.250)2.0O6 and glass
with an approximate relationship 69:31.
Keywords: basalt, glass-ceramics, phase composition, microstructure, mechanical properties