Synthesis and characterization of diopside glass–ceramic matrix composite reinforced with aluminum titanate

Yousefi, Mohammad; Alizadeh, Parvin; Yekta, B. Eftekhari; Molaie, F.; Ghafoorian, Nafiseh Sadat; Montazerian, Maziar

doi:10.1016/j.ceramint.2008.07.020

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…Additionally, viscosity and the amount of amorphous phase at firing temperature play a pivotal role to enhance densification and reduce defects [7], [8]. The high amount of low-viscous amorphous phase helps to promote densification and also relieve residual stress during the firing cycle, resulting in the improved mechanical properties such as toughness and strength [8], [13], [14]. It seems that, in this study, a higher amount of glassy phase in samples P1-P5 could adequately wet all the hard crystalline phases like quartz and mullite, as we could observe well-vitrified surfaces of P1 and P5 in Figures 6a and 6b.…”

Section: Discussionmentioning

confidence: 99%

Deep Abrasion Resistance of Porcelain Stoneware Tiles: An Updated Look

Montazerian¹,

Eilaghi²,

Mousavi³

2019

Preprint

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When we were working on improving the resistance to deep abrasion of porcelain stoneware tiles, several tiles which had a very high resistance to abrasion were found in the market. The abraded volume of these tiles, measured via ISO 10545-6 method, was conspicuously less than 75 mm3. These values were well below the standard limit (<175 mm3) and reported values in the literature (>110 mm3). We determined the chemical, physical and microstructural characteristics of these tiles and other commercially available ones to find the relationship between the abrasion resistance and the technical specifications. We also characterized the samples by Vickers microhardness (VH), X-ray diffraction (XRD), mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM). It was observed that the high resistance to abrasion could be due to the presence of an adequate glassy phase capable of wetting all the hard crystalline phases in the matrix such as quartz and mullite. Therefore, the resistance to deep abrasion could be improved by increasing the amount of “vitreous” matrix, without altering the content of "hard" phases considerably well-bonded to the matrix.

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Section: Discussionmentioning

confidence: 99%

Deep Abrasion Resistance of Porcelain Stoneware Tiles: An Updated Look

Montazerian¹,

Eilaghi²,

Mousavi³

2019

Preprint

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“…by generation of a new, additional phase in a glass residue, introduction of an additional component in the form of fibres or particles into the matrix. The obtained phase included diopside, magnesian chromate and aluminium tytaniate, which contributed to higher fracture toughness equal to 1.48 MPam 1/2 [5]. Glass-ceramic materials from a CMAS group, with the main phase in the form of diopside, respecting their high wear resistance were also used to reinforce among others alumina composites, and also they constituted an important group of materials such as binders for porous abrasive composites [6].…”

Section: Introductionmentioning

confidence: 99%

Crystallization of Gahnite in CMAS Glass Forming System - Mechanism and Process Kinetics

Herman

Okupski

Walkowiak

2010

12th INTERNATIONAL CERAMICS CONGRESS PART G

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The crystallisation mechanism of glass-ceramic materials from a CMAS group Al0.37B0.34Fe0.01Mg0.02Zn0.29Ca0.05Si0.78O3 was tested under non-isothermal conditions by the DTA method. Glass-ceramic material of two-phase composition with precipitation of crystallites from islet silicates Zn2SiO4 and a crystalline phase from a spinel group, gahnite ZnAl2O4 was obtained in the system under investigation. Activation energy of a crystallization process Ea was determined and a crystal growth morphology parameter n was computed. It was revealed that in the test material from a CMAS group one could obtain the crystalline phase in the form of ghanite as a result of a controlled process of crystallization. The occurrence of a spinel phase caused the obtained glass-ceramic material had higher fracture toughness (KIC) than material from a CMAS group, containing pyroxene crystalline phases typical for this system.

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Glass Matrix Composite

Bernardo

2011

Wiley Encyclopedia of Composites

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Glass and glass–ceramic matrix composites represent a very particular type of composite materials. As in most ceramic matrix composites, the reinforcements are mainly intended to increase the resistance to crack propagation, that is, the most significant weakness of the matrices, due to several toughening mechanisms. Unlike polycrystalline ceramic matrices, however, glasses offer the distinctive feature of viscous flow, being readily deformed and flowed in their low viscosity state, with the possibility of incorporating secondary phases at moderately high temperatures. Fibrous reinforcements (mainly C and SiC fibers) are at the basis of materials with impressive properties, for example, strength above 1 GPa, fracture toughness up to 35 MPa m 0.5 , almost zero thermal expansion, and service temperature up to 1500°C, but still facing high costs, although known for many years. Recent applications, such as that of “optomechanical materials,” that is, transparent materials with improved crack resistance, may stimulate research investments and production. As an alternative, dispersion‐reinforced composites, first seen as lower value category, owing to the limited improvements in fracture toughness, are currently the candidates for extensive industrial production, since the low cost treatments applied may be combined with complex combinations of different functionalities.

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Synthesis and characterization of diopside glass–ceramic matrix composite reinforced with aluminum titanate

Cited by 4 publications

References 12 publications

Deep Abrasion Resistance of Porcelain Stoneware Tiles: An Updated Look

Deep Abrasion Resistance of Porcelain Stoneware Tiles: An Updated Look

Crystallization of Gahnite in CMAS Glass Forming System - Mechanism and Process Kinetics

Glass Matrix Composite

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