Effect of TiO 2  additions on densification and mechanical properties of new mulltifunction resistant porcelains using economic raw materials

Harabi, Abdelhamid; Kasrani, Souad; Foughali, Lazhar; Serradj, Ismahan.; Benhassine, Mohamed Tayeb; Kitouni, S.

doi:10.1016/j.ceramint.2017.01.081

Cited by 14 publications

(4 citation statements)

References 25 publications

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“…Although a non-linear tendency is observed, the improved hardness performance can be connected with a superior mullite presence in the porcelain body, in agreement with the X-ray diffraction analysis (Al-Hilli and Al-Rasoul, 2013;Harabi et al, 2017;Belhouchet et al, 2019). The diminished HV hardness at higher chamotte addition might be attributed to a more extended vitreous phase in the bodies.…”

Section: Mechanical Behaviorsupporting

confidence: 76%

“…An increasing density tendency is observed as chamotte is added to the CSP formulation (control formulation). This observance might be associated with a higher mullite content originating from the porcelain chamotte due to a higher mullite density (3.2 g/cm 3 ) than the other components of the porcelain matrix (quartz-2.6 g/cm 3 , feldspar-2.56 g/cm 3 , kaolinite-2.65 g/cm 3 ) (Xie et al, 2012;Harabi et al, 2017;Mehta et al, 2018).…”

Section: Physical Propertiesmentioning

confidence: 97%

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Effect of binary raw materials replacement (quartz and feldspar) for porcelain chamotte on the electro-technical siliceous porcelain properties

Rodríguez,

Díaz-Tato,

López-Perales

et al. 2023

Front. Mater.

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The hurry for ecological practices and waste control has emerged as an obligation in modern times, demanding precise strategies to restrain waste accumulation and to stimulate recycling and reuse actions to lower the climate effect. The replacement of binary raw materials for porcelain chamotte waste in siliceous porcelain was studied to obtain eco-friendly high-voltage porcelain. Quartz and feldspar were progressively replaced by 5, 10, and 15 wt.% of porcelain chamotte in a conventional siliceous electro-technical porcelain composition. The replacement effect on sintered samples at 1250°C under industrial heat treatment was evaluated by measuring the linear shrinkage, bulk density, porosity, flexural strength, and microhardness technological properties. Phase analysis was carried out by X-ray diffraction. Microstructural characteristics were studied using a scanning electron microscope. The results showed that chamotte-containing samples reached bulk densities of about 2.36 g/cm3 and a porosity percentage near zero. The maximum flexural strength value at glazed states was 87.8 MPa, for 15 wt.% scrap-containing samples. X-ray diffraction studies revealed a higher mullite phase content in chamotte-containing samples. Scanning electronic microscopy images of the polished and etched specimens show the presence of quartz grains and secondary mullite needles embedded in a feldspathic vitreous matrix. The properties reached by the chamotte-containing samples are attractive since the values obtained in terms of flexural strength, density, and porosity are compared to those reported for conventional siliceous porcelain were obtained. The most noticeable result was observed in flexural resistance. The glazed porcelain bodies showed a flexural strength improvement of about 15%. Then, these porcelain compositions suggest an alternative to produce a more sustainable, affordable, and environmentally-friendly porcelain insulator product.

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Section: Mechanical Behaviorsupporting

confidence: 76%

Section: Physical Propertiesmentioning

confidence: 97%

Effect of binary raw materials replacement (quartz and feldspar) for porcelain chamotte on the electro-technical siliceous porcelain properties

Rodríguez,

Díaz-Tato,

López-Perales

et al. 2023

Front. Mater.

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“…However, the high strength and the variation in strength behavior could not be explained only by its high crystalline content. Generally, the strength of ceramics is related to type, amount, shape, size, and distribution of both crystalline phases and porosities within the microstructure …”

Section: Discussionmentioning

confidence: 99%

Microstructural and technological investigation of bone China reformulated with nepheline syenite and quartz addition

Kabakci

Capoglu

2019

Int J Applied Ceramic Tech

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In this study, bone china body was reformulated by completely replacing Cornish stone with nepheline syenite and quartz. Effect of controlled milling/mixing on the technological properties and microstructural evolution was also studied. Specimens prepared both from reformulated and controlled milled/mixed bodies were sintered between 1200 and 1250°C with 25°C increment. Sintering and technological properties of reformulated bodies were not being adversely affected but conversely, the measured flexural strength values (55 MPa) were half of the value that was published for bone china (100 MPa). Microstructural investigations showed that enlarged pore formation was the reason for strength reduction. However, improvement in particle packing by controlled milling/mixing eliminated enlarged pore formation and in response, flexural strength values increased to conventionally quoted levels. Detailed microstructural investigations revealed that the reason behind enlarged pore formation was heterogeneous distributions of body components, especially CaO and quartz grains. It was suggested that variations of CaO and SiO 2 to form improper ratio between them would affect the viscosity of glassy phase and crystallization, which would prevent gases in pores to dissolve away. The obtainment of homogenous distribution of body components by controlled milling/mixing has a strong influence on the evolution of microstructure and improvement of technological properties.

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“…With the development of modern industry, the demand for industrial raw materials is increasing, which depletes the raw material resources [1][2]. Many infant industries use both industrial waste or low grade raw material to manufacture high cost performance products [3][4]. High grade quartz sands as non-metallic minerals raw materials are extensively used in the foundry industry, for glass making, in the building industry and munitions industries [5][6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Sintering Method on the Properties of Quartz Porous Ceramics

Yang

Chen

et al. 2017

DDF

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The sintering methods of quartz sand porous ceramics were researched with the low grade quartz sand along the Yangtze River via the vacuum sintering method in this paper, which lay technology foundation for researching new heat insulating materials. The quartz porous ceramics is obtained with the high performance cost, the quartz porous ceramics is sintered at 1050°C via the vacuum conditions, the density of ceramics is 1.267g/cm3, the porosity is 51.6%, the compressive strength is 3.184MPa, the porous ceramics show the homogeneous distribution micro-pore and good shape. The density and the compressive strength of prepared ceramics via the vacuum sintering both are higher than that of prepared ceramics via the atmosphere sintering, however, the porosity is shown the opposite results.

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Effect of TiO 2 additions on densification and mechanical properties of new mulltifunction resistant porcelains using economic raw materials

Cited by 14 publications

References 25 publications

Effect of binary raw materials replacement (quartz and feldspar) for porcelain chamotte on the electro-technical siliceous porcelain properties

Effect of binary raw materials replacement (quartz and feldspar) for porcelain chamotte on the electro-technical siliceous porcelain properties

Microstructural and technological investigation of bone China reformulated with nepheline syenite and quartz addition

Effect of Sintering Method on the Properties of Quartz Porous Ceramics

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