Microstructural Variation in Porcelain Stoneware as a Function of Flux System
作者： G. P. Souza , E. Rambaldi , A. Tucci , L. Esposito , W. E. Lee
DOI: 10.1111/J.1151-2916.2004.TB06347.X
关键词: Microstructure 、 Composite material 、 Materials science 、 Mineralogy 、 Crystallization 、 Mullite 、 Tile 、 Quartz 、 Wollastonite 、 Eutectic system 、 Sintering
摘要: Fired microstructures of standard porcelain stoneware tile and made from mixes containing waste glass as part the flux system were studied by XRD, SEM, TEM. The microstructure consists 100-1000 μm long mullite needles, feldspar relics, partially dissolved α-quartz embedded in a glassy matrix. use soda-lime-silica (SLS) led to crystallization plagioclase, wollastonite, sodium silicates. CaO-rich areas adjacent quartz particles, result interactions between SLS silica quartz, eutectic morphologies, revealed that accelerated liquid formation thus sintering densification. Formation these additional phases lower levels mullite, Na-feldspar although firing temperatures could be used achieve full density due generation more fluid liquid. Use PbO-containing glasses had little effect on compared with composition while mixed plagioclase but extent than higher SLS.
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