Preparation of glass by sintering

Rabinovich, É. M.

doi:10.1007/bf00559317

Cited by 220 publications

(132 citation statements)

References 90 publications

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“…The preparation of glass articles by sintering is a common practice in both the laboratory and the industry [1]. Models that predict the isothermal densi®cation of a porous body, composed of glass particles having the same size or porous compacts having identical pores, as a function of viscosity, surface energy and particle size, successfully describe parts of the sintering process [2,3].…”

Section: Introductionmentioning

confidence: 99%

Model for sintering polydispersed glass particles

Prado

Zanotto

Müller

2001

Journal of Non-Crystalline Solids

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We propose a model to describe the sintering kinetics of polydispersed glass particles, having no adjustable parameter. The model is based on three sintering stages: a pure`Frenkel' (F) ®rst step, a mixed`Frenkel/Mackenzie± Shuttleworth' stage, and a third, pure`Mackenzie±Shuttleworth' (MS) step. The model considers sample shrinkage as the sum of the partial shrinkage of several clusters, each consisting of equally sized particles and each showing independent F or MS behavior. The overall set of clusters mimics the specimen's real particle size distribution. We then introduce the concept of neck forming ability ± n r , which allows the formation of necks among particles of dierent sizes, relaxing the clustering condition. Using experimental physical parameters: particle size distribution, viscosity, surface energy, and the theoretical n r , the model describes well the sintering kinetics of an alumino-borosilicate glass powder having polydispersed, irregular shaped particles in a variety of temperatures. The sintering kinetics of the real powder is slower, but not far from the calculated kinetics of a monodispersed distribution containing only particles of average size. Thus the model provides a tool for estimating the sintering kinetics of real glass powders, for any size distribution and temperature, thus minimizing the number of laboratory experiments. Ó

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Section: Introductionmentioning

confidence: 99%

Model for sintering polydispersed glass particles

Prado

Zanotto

Müller

2001

Journal of Non-Crystalline Solids

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“…The addition of Al 2 O 3 nanoparticles resulted in an increment in the sintering temperature. According to a previous study on the sintering of amorphous SiO 2 particles, 16) sintering occurs due to the viscous flow of these particles at high temperatures. Thus, the sintering behavior of SiO 2 is related to its viscosity at a given temperature.…”

Section: Discussionmentioning

confidence: 99%

Fabrication and photoluminescence of monolithic silica glass doped with alumina nanoparticles using SiO<sub>2</sub>-PVA nanocomposite

Ikeda

Murata

Fujino

2015

J. Ceram. Soc. Japan

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Al 2 O 3 nanoparticle doped SiO 2 -PVA nanocomposites were prepared using fumed silica, fumed alumina, and poly(vinyl alcohol) (PVA). Nanocomposites containing from 0 to 6 mol % Al 2 O 3 were heat-treated in air at 1100 to 1300°C to obtain monolithic, transparent silica glass. The 0.6 mol % Al 2 O 3 doped nanocomposite was sintered at 1200°C, a higher temperature than was required for the non-doped nanocomposite. The obtained Al 2 O 3 doped silica glass exhibited characteristic blue photoluminescence (PL) on UV excitation. The effects of the Al 2 O 3 nanoparticles on the sintering temperature and the PL characteristics of the sintered silica glass are discussed in terms of the morphology and structure of the sintered glass.

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“…The LZSA glass was produced by Colorminas (Brazil) from commercially available raw materials (Li 2 CO 3 , ZrSiO 4 and SiO 2 and LiAlSi 2 O 6 , spodumene). A 300 kg batch was loaded in a gas furnace and melted at 1500 °C for 7 h. The melt was quenched in water and dried.…”

Section: Methodsmentioning

confidence: 99%

“…Since Stookey's discovery in 1959 [2,3], many glassceramic systems have been developed and produced as components for a variety of applications, such as cooktops, cookware and bakeware, protective layers, and sewing-thread supports for the textile industry [2][3][4]. Such interest is related to the possibility of designing glass-ceramic materials with specific properties.…”

Section: Introductionmentioning

confidence: 99%

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The effect of microstructural features on the mechanical properties of LZSA glass-ceramic matrix composites

et al. 2013

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This work reports on the characterization of ZrSiO 4 particulate-reinforced Li 2 O-ZrO 2 -SiO 2 -Al 2 O 3 (LZSA) glass-ceramic matrix composites. The typical physical/mechanical and chemical properties of the glass batches and the composites were measured. A composition with 60 wt.% ZrSiO 4 was preliminarily selected because it demonstrated the highest values of bending strength (190 MPa) and deep abrasion resistance (51 mm 3 ). To this same composition was given a 7 wt.% bentonite addition in order to obtain plasticity behavior suitable for extrusion. The sintered samples (1150 °C for 10 min) presented a thermal linear shrinkage of 14% and bending strength values of 220 MPa. Keywords: glasses, ceramic-matrix composites, mechanical properties, extrusion. Resumo Este trabalho relata a caracterização de compósitos baseados em matriz vitrocerâmica do sistema Li 2 O-ZrO

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Preparation of glass by sintering

Cited by 220 publications

References 90 publications

Model for sintering polydispersed glass particles

Model for sintering polydispersed glass particles

Fabrication and photoluminescence of monolithic silica glass doped with alumina nanoparticles using SiO<sub>2</sub>-PVA nanocomposite

The effect of microstructural features on the mechanical properties of LZSA glass-ceramic matrix composites

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