Development ceramic composites based on Al2O3, SiO2and IG-017 additive

Kurovics, Emese; Shmakova, A.; Kanev, Bronislav; Gömze, László A.

doi:10.1088/1757-899x/175/1/012013

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…Depending on volume ration of the used bioorigin additive during sintering (green firing) some of specimens have shrunk ("+") and some of specimens have swelled ("-") both in normal and nitrogen atmospheres as they are shown in Figure 4. In cases when the specimens were made from all three (Al 2 O 3 , SiO 2 and IG-017) we could observe only shrinkage in the normal atmosphere (1 green line) and only swelling (2 green line) in N 2 atmosphere [20]. In both cases the density of the specimens has decreased increasing the portion of the added IG-017 additive, thanking to the increased porosity during firing.…”

Section: Figure 3 Changes Of Geometrical Sizes Depending On Technolomentioning

confidence: 84%

“…After compacting half of the specimens were fired (sintered) in normal (oxidation) atmosphere and the other half of the specimens were fired in nitrogen. In both cases the maximum sintering temperature was 1250°C [20]. This temperature is enough high to create "technical" mullite crystals, but not enough high for formation of cristobalite phase in the free SiO 2 components of the mixtures.…”

Section: Materials and Experimentsmentioning

confidence: 93%

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Influence of Sintering Atmosphere and IG-017 Bio-Original Additives on Porosity of Ceramics Made from High Purity Al2O3 and SiO2 Powders

Kurovics¹,

Gömze²

2017

The Publications of the MultiScience - XXXI. MicroCAD International Scientific Conference

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Using high purity alumina and quartz powders and IG-017 bio-original additives of Igrex Ltd. the authors have developed new ceramic composite materials which can be applied in different industrial environment. The main goal was to fine a material and morphological structures of high performance ceramic composites as frames for development complex materials for extreme consumptions. For this the mixed powders of Al 2 O 3 , SiO 2 and IG-017 bio-original additive were uniaxially pressed at different compaction pressures into cylindrical shapes and were sintered in electric kiln under oxidation (1) and nitrogen (2) atmosphere. The grain size distribution of the raw materials was determined by laser granulometry. There thermo-physical properties were also determined by derivatography. The prepared and sintered specimens were tested on geometrical sizes, porosity and mechanical strength. In this work the authors present the results of their research and investigation.

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Section: Figure 3 Changes Of Geometrical Sizes Depending On Technolomentioning

confidence: 84%

Section: Materials and Experimentsmentioning

confidence: 93%

Influence of Sintering Atmosphere and IG-017 Bio-Original Additives on Porosity of Ceramics Made from High Purity Al2O3 and SiO2 Powders

Kurovics¹,

Gömze²

2017

The Publications of the MultiScience - XXXI. MicroCAD International Scientific Conference

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“…The geometrical parameters of the ceramic products are strongly depending on the material compositions and sintering conditions, like temperature, and sintering environment [5], [20], [21]. Due to sintering in different atmospheres, the colour of the ceramic specimens has changed as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Examination of the Carbonization Process Using Kaolin and Sawdust

Kurovics

Udvardi

Кириленко

et al. 2019

Materials and Contact Characterisation IX

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Ceramics reinforced with carbon and silicon carbide particles are of great importance in the field of technical ceramics and ceramic composites. In this research, the possibilities of producing advanced ceramics from traditional, relatively inexpensive materials were studied. The authors have successfully developed mullite ceramic materials reinforced with carbon particles using kaolinite powder and sawdust. Powder mixtures with different compositions were prepared in a planetary ball mill using silica balls. The produced mixtures were compacted in a 100 kN pull-press to produce pellets using a pressure of 140 MPa. The prepared specimens were sintered in a laboratory chamber kiln under oxygen deficient conditions at 1250°C. After sintering of the specimens, considerable amounts of carbon content were incorporated into the material structure of produced ceramics, which were confirmed by energy-dispersive X-ray analysis. Using 10-20 m% sawdust in the mixtures, the carbon (C) content of sintered specimens was found to be more than 8 m%.

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Influence of compacting times and pressures on rheological properties of alumina and quartz ceramic powder mixtures

Gömze

Kurovics

2018

J. Phys.: Conf. Ser.

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Development ceramic composites based on Al₂O₃, SiO₂and IG-017 additive

Cited by 7 publications

References 19 publications

Influence of Sintering Atmosphere and IG-017 Bio-Original Additives on Porosity of Ceramics Made from High Purity Al2O3 and SiO2 Powders

Influence of Sintering Atmosphere and IG-017 Bio-Original Additives on Porosity of Ceramics Made from High Purity Al2O3 and SiO2 Powders

Examination of the Carbonization Process Using Kaolin and Sawdust

Influence of compacting times and pressures on rheological properties of alumina and quartz ceramic powder mixtures

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