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Li 2 O─SiO 2 ─Al 2 O 3 ─Me II O Glass‐Ceramic Systems for Tile Glaze Applications
Author(s) -
Leonelli Cristina,
Manfredini Tiziano,
Paganelli Mariano,
Pellacani Gian Carlo,
Albaro Jose Luis Amoros,
Navarro Jose Emilio Enrique,
Orts Maria Jose,
Bruni Silvia,
Cariati Franco
Publication year - 1991
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1991.tb04331.x
Subject(s) - tile , devitrification , glaze , crystallization , ceramic , materials science , mineralogy , differential thermal analysis , ceramic glaze , glass ceramic , frit , wollastonite , spodumene , scanning electron microscope , diopside , chemical engineering , metallurgy , composite material , chemistry , raw material , optics , physics , diffraction , engineering , organic chemistry
In order to verify the possibility of using glass‐ceramic materials as tile coatings, the devitrification processes of three industrial formulations belonging to the Li 2 O─Al 2 O 3 ─SiO 2 glass‐ceramic system were investigated by differential thermal analysis, X‐ray diffractometry, scanning electron microscopy, and IR spectroscopy. Compositional variations were made by addition of large amounts of MgO or CaO or PbO (ZnO) oxides as well as through smaller additions of other oxides. In these systems the surface crystallization contributes appreciably to the bulk crystallization mechanism. All the systems investigated show a high tendency toward crystallization even at very high heating rates, developing a very close network of interlocked crystals of synthetic β‐spodumene‐silica solid solutions (LiAlSi 4 O 10 ). The results of this research are expected to establish the conditions under which these glass‐ceramic systems can be practically used as tile glazes.