Cordierite material with sintered condition extending over a 300�C interval

Takher, E. A.; Popil'skii, R. Ya.; Dain, É. P.; Lukoperova, M. G.; Kir'yanova, N. A.

doi:10.1007/bf01160273

Cited by 4 publications

(2 citation statements)

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“…On the other hand, the production of glass-ceramic materials processed from glass powders and consolidated by sintering and crystallisation seems to be a valid alternative. In this case, it is possible to use the same equipments of a ceramic plant for the production of components with very complicated shapes [2,[8][9][10]. The process involves the following steps: (i) glass melting and cooling for producing parent glass frit; (ii) comminuting the frit into powder; (iii) forming by powder technology into many shapes and sizes; (iv) thermal treatment involving sintering and crystallisation to obtain a dense body.…”

Section: Introductionmentioning

confidence: 99%

New Silicate Glass-Ceramic Materials and Composites

Hotza

Oliveira

2010

12th INTERNATIONAL CERAMICS CONGRESS PART G

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New silicate glass-ceramic compositions have been investigated due to their interesting chemical, mechanical, thermal, and electrical properties. LZSA glass-ceramics based on -spodumene (Li2O•Al2O3•4-10SiO2) and zircon (ZrSiO4) crystalline phases have shown good chemical resistance, high bending strength as well as high abrasion resistance, when compared with traditional ceramic materials, and coefficient of thermal expansion from 4.6 to 9.110-6 °C-1. These features basically depend on the nature, size and distribution of the formed crystals as well as on the residual glassy phase. The nature of the formed crystalline phases and consequently the final properties can be controlled by modifying the chemical composition of the parent glass and also by adequate selection of the heat-treatment parameters. The classical fabrication of glass-ceramic materials consists on the preparation of monolithic glass components followed by heat treatments for crystallisation. However, this technology requires high investments and can be justified only for large production. A viable alternative could be the production of glass-ceramics processed from glass powders and consolidated by sintering using the same equipments of traditional ceramic plants. This work reports the manufacturing and characterization of glass-ceramic materials and composites processed by pressing, injection moulding, extrusion, casting, replication, and rapid prototyping.

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Section: Introductionmentioning

confidence: 99%

New Silicate Glass-Ceramic Materials and Composites

Hotza

Oliveira

2010

12th INTERNATIONAL CERAMICS CONGRESS PART G

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“…However, this technology requires great investments and can be justified only for high production volumes [3]. On the other hand, the production of glass-ceramic materials processed from glass powders and consolidate by sintering and crystallization seems to be a valid alternative since is possible to use the same equipments of a ceramic plant for the production of components with very complicated shapes [3][4][5][6]. The process involves the following steps: i) glass melting and its cooling (parent glass frit); ii) pulverization; forming by ceramic technology (axial pressing [7], extrusion [8], slip casting [9], powder injection moulding [10][11], ceramic foams [12], roll pressing [13], etc.…”

Section: Introductionmentioning

confidence: 99%

Roll Pressed LZSA Glass-Ceramics

Reitz

Montedo

Alarcon

et al. 2006

Advances in Science and Technology

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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.

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