Roll Pressed LZSA Glass-Ceramics

Abstract:

This work reports some experimental results regarding to a Li2O-ZrO2-SiO2-Al2O3 (LZSA) sintered glass-ceramic material obtained by roll pressing of glass powders (mean particle size ≈ 5 μm) with an added (7 wt.%) inorganic material (bentonite) as binder. The composition was characterized using chemical analysis, laser-scattering particle size analysis, DTA, XRD, thermal expansion, modulus of rupture (MOR) and deep abrasion (DA) measurements as well as density measurements and SEM observations. From the results it was verified that the glass-ceramic materials obtained by sintering and controlled crystallization, in the 850-1030°C temperature range, of glass powders, have properties and characteristics decisively better than those of other traditionally used materials. It is concluded that roll pressing technology is a potential candidate to produce sintered glassceramics for many applications, such as, for example, large sheets panels for electrical and thermal insulation.

• Periodical: Advances in Science and Technology (Volume 45)
• Pages: 442-446
• DOI: https://doi.org/10.4028/www.scientific.net/AST.45.442
• Online since: October 2006
• Authors: G.M. Reitz, Oscar R.K. Montedo, Orestes Estevam Alarcon, Dachamir Hotza, A. P. Novaes de Oliveira
• Keywords: Ceramic, Crystallization, Glas Ceramics, Roll Pressing, Sintering

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