Synthesis and Sintering Studies of Magnesium Aluminum Silicate Glass Ceramic

Durrani, Shahid-Khan; Hussain, Muhammad-Ashraf; Saeed, Khalid; Hussain, Syed-Zahid; Arif, Muhammad; Saeed, Ather

doi:10.5772/35833

Cited by 3 publications

(9 citation statements)

References 34 publications

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“…Between 400-700°C the weight loss was slow and steady, which probably is connected to glass transition/transformation, and from 700-750°C the weight loss was constant due to the onset of sintering/nucleation. The nucleation temperature of the crystal is a strong function of the heating rate as found by Durrani et al [6]. It was observed that increasing the heating rate shifted the nucleation temperature to a higher value.…”

Section: Thermo Gravimetric Analysis (Tga)mentioning

confidence: 58%

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Sinter recrystalization and properties evaluation of glass-ceramic from waste glass bottle and magnesite for extended application

et al. 2016

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In a bid to address environmental challenges associated with the management of waste Coca cola glass bottle, this study set out to develop glass ceramic materials using waste coca cola glass bottles and magnesite from Sakatsimta in Adamawa state. A reagent grade chrome (coloring agent) were used to modify the composition of the coca cola glass bottle; X-ray fluorescence(XRF), X-ray diffraction (XRD) and Thermo gravimetric analysis (TGA) were used to characterize raw materials, four batches GC-1= Coca cola glass frit +1%Cr2O3, GC-2=97% Coca cola glass frit+ 2% magnesite+1%Cr2O3, GC-3=95% Coca cola glass frit+ 4%magnesite+1%Cr2O3, GC-4=93%Coca cola glass frit+ 6%magnesite+ 1%Cr2O3 were formulated and prepared. Thermal Gradient Analysis (TGA) results were used as a guide in selection of three temperatures (7000C, 7500C and 8000C) used for the study, three particle sizes -106+75, -75+53, -53µm and 2 hr sintering time were also used, the sinter crystallization route of glass ceramic production was adopted. The samples were characterized by X-ray diffraction (XRD) and Scanning Electron Microscope (SEM), the density, porosity, hardness and flexural strength of the resulting glass ceramics were also measured. The resulting glass ceramic materials composed mainly of wollastonite, diopside and anorthite phases depending on composition as indicated by XRD and SEM, the density of the samples increased with increasing sintering temperature and decreasing particle size. The porosity is minimal and it decreases with increasing sintering temperature and decreasing particle size. The obtained glass ceramic materials possess appreciable hardness and flexural strength with GC-3 and GC-4 having the best combination of both properties.

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Section: Thermo Gravimetric Analysis (Tga)mentioning

confidence: 58%

“…The TGA analysis is a useful method to determine the optimal stabilization temperature [6]. TGA of Coca-Cola glass bottle was done in the temperature range of 30-1000°C in order to find the crystallization temperature of different crystalline phases as shown in Figure 4.…”

Section: Thermo Gravimetric Analysis (Tga)mentioning

confidence: 99%

Sinter recrystalization and properties evaluation of glass-ceramic from waste glass bottle and magnesite for extended application

et al. 2016

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“…Cordierite (2MgO.2Al 2 O 3 .5SiO 2 ) and cordierite-based glass-ceramics have attracted much attention in recent years as electronic and radio engineering materials because of their low thermal expansion coefficient, low thermal conductivity, and low dielectric constant [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…to attain complete densification [8]. In this way, two-step sintering was used to prepare dense MAS glass-ceramics [1]. By controlling the sintering conditions, the thermal and dielectric properties of the cordierite-based ceramics can be improved.…”

Section: Introductionmentioning

confidence: 99%

Development of cordierite-based glass-ceramics by slip casting through selecting the appropriate sintering conditions

et al. 2022

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The present work aims to prepare a dense cordierite-based glass-ceramic through slip casting and consequent heat treatment procedures. In this regard, sintering conditions were considered as the key variables to improve the properties of the glass-ceramic. For this purpose, glass frit powder was prepared through melting oxide powders (in the system of SiO2-Al2O3-TiO2-K2O-CaO-MgO). The mixed powders were then heat treated at 1450 °C for 1 hour and quenched in water. The glass frit powder was slip cast using the appropriate dispersant. Sintering was carried out by one-step, two-step, and three-step procedures. Specimens were characterized in terms of various analysis techniques including dilatometry, X-ray diffractometry, scanning electron microscopy, and mechanical strength measurement. Among the examined specimens, the sample sintered by a three-step approach was considered the optimized one which attained zero porosity. According to the obtained results, cordierite crystals were observable in this glass-ceramic matrix. A low coefficient of thermal expansion and a low dielectric constant were observed for the optimized glass-ceramic sample. The obtained results confirmed that the homogenous distributions of crystalline phases are responsible for the appropriate and desirable properties of the prepared glass-ceramic.

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“…Diferentes métodos de obtenção da cromita de cobre são relatados na literatura, dentre eles o método cerâmico convencional, coprecipitação, sol-gel e síntese hidrotérmica [11,12]. A maioria destes métodos apresenta limitações, principalmente em relação às altas temperaturas e tempo de reação [13]. O processo de síntese, o tempo e a temperatura de calcinação têm influência direta nas características do material resultante [14].…”

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Caracterização de materiais cerâmicos à base de CuCr 2 O 4 preparados pelo método da reação de combustão em solução para uso como pigmentos

et al. 2018

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Resumo Pós cerâmicos à base de CuCr2O4 foram preparados pelo método da reação de combustão em solução a partir da calcinação no intervalo de 500 a 1100 °C, tendo por finalidade a aplicação destes como pigmento cerâmico. O estudo das propriedades estruturais, morfológicas, químicas e ópticas foi realizado por meio das técnicas de difração de raios X, refinamentos pelo método de Rietveld, microscopia eletrônica de varredura com canhão de elétrons por emissão de campo, fluorescência de raios X, reflectância difusa e coordenadas colorimétricas L*, a*, b* com base no método CIEL*a*b*. Os pós sintetizados foram misturados com vidrados mate e transparente e aplicados em matrizes cerâmicas. Os resultados mostraram que ao aumentar a temperatura ocorreu a conversão da fase cromita, na qual foram observados poliedros regulares, em delafossita, que apresentou morfologia em forma de placas hexagonais. A reflectância mostrou a formação de pós com tonalidade escura, corroborados pelos dados das coordenadas colorimétricas. Os pós sintetizados exibiram capacidade pigmentante de coloração verde, quando incorporados nos vidrados cerâmicos.

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Synthesis and Sintering Studies of Magnesium Aluminum Silicate Glass Ceramic

Cited by 3 publications

References 34 publications

Sinter recrystalization and properties evaluation of glass-ceramic from waste glass bottle and magnesite for extended application

Sinter recrystalization and properties evaluation of glass-ceramic from waste glass bottle and magnesite for extended application

Development of cordierite-based glass-ceramics by slip casting through selecting the appropriate sintering conditions

Caracterização de materiais cerâmicos à base de CuCr 2 O 4 preparados pelo método da reação de combustão em solução para uso como pigmentos

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