@article{MTMT:34474887,
	title = {Reaction synthesis of porous nano-structured mullite ceramic composites from alumina and zeolite-poor rock with enhanced strength and low thermal conductivity},
	url = {https://m2.mtmt.hu/api/publication/34474887},
	author = {FADOUL MOHAMMED IBRAHIM, JAMAL ELDIN and Kurovics, Emese and TIHTIH, Mohammed and Basyooni, Mohamed A. and Kocserha, István},
	doi = {10.1016/j.rineng.2023.101423},
	journal-iso = {RESULT ENGIN},
	journal = {RESULTS IN ENGINEERING},
	volume = {20},
	unique-id = {34474887},
	abstract = {Porous mullite-based ceramics have been developed using a mixture of zeolite-poor rock and alumina through mechanical activation and reactive sintering. The experimental findings demonstrate that the in-situ mullite growth may develop in a variety of shapes, including whiskers, nanofiber, nanonetwork and diamond-like particles. The XRD examination indicates that the samples sintered at 1500 °C are mostly made of the mullite phase. The SEM photographs show that as the sintering temperature increases, the mullitization process takes place first in zeolite-poor rock particles, and subsequently, alumina combines with the silica-containing phase via a liquid-phase sintering mechanism to produce an interlocking network of extended secondary mullite. The effects of mullite formation and the sintering temperature on various properties of the sintered samples, such as their density, apparent porosity, thermal conductivity, strength, wear resistance, composition, morphologies, and microstructural characteristics of the sintered samples were studied. Increasing the sintering temperature from 1100 to 1500 °C improved the different properties. The density increased from 1.9 to 2.1 g/cm3, thermal conductivity rose from 0.9 to 1.6 W/m.K, compressive strength escalated from 18.9 to 92.1 MPa, and worn material volume decreased from 2444 to 36.9 mm3 after a 5-min abrasion test.},
	keywords = {thermal conductivity; ALUMINA; Wear resistance; in-situ synthesis; Zeolite-poor rock; Mullite-based ceramic},
	year = {2023},
	eissn = {2590-1230},
	orcid-numbers = {Kurovics, Emese/0000-0001-5669-3318}
}

@article{MTMT:34445383,
	title = {Az égetési hőmérséklet hatása az Al2O3-üveg kompozit tulajdonságaira},
	url = {https://m2.mtmt.hu/api/publication/34445383},
	author = {Simon, Andrea and Kurovics, Emese and Mucsi, Gábor and Kocserha, István},
	doi = {10.14382/epitoanyag-jsbcm.2023.19},
	journal-iso = {ÉPÍTŐANYAG-JSBCM},
	journal = {ÉPÍTŐANYAG: JOURNAL OF SILICATE BASED AND COMPOSITE MATERIALS},
	volume = {75},
	unique-id = {34445383},
	issn = {0013-970X},
	year = {2023},
	eissn = {2064-4477},
	pages = {136-141},
	orcid-numbers = {Kurovics, Emese/0000-0001-5669-3318}
}

@article{MTMT:34186523,
	title = {Comparative study of metakaolin-based geopolymer characteristics utilizing different dosages of water glass in the activator solution},
	url = {https://m2.mtmt.hu/api/publication/34186523},
	author = {Mohammed, Al-Saudi Sarah kareem and Géber, Róbert and Simon, Andrea and Kurovics, Emese and Hamza, Alexandra},
	doi = {10.1016/j.rineng.2023.101469},
	journal-iso = {RESULT ENGIN},
	journal = {RESULTS IN ENGINEERING},
	volume = {20},
	unique-id = {34186523},
	year = {2023},
	eissn = {2590-1230},
	orcid-numbers = {Géber, Róbert/0000-0002-0973-863X; Kurovics, Emese/0000-0001-5669-3318}
}

@article{MTMT:33210574,
	title = {Glass-Ceramic Foams Produced from Zeolite-Poor Rock (Tokaj)},
	url = {https://m2.mtmt.hu/api/publication/33210574},
	author = {FADOUL MOHAMMED IBRAHIM, JAMAL ELDIN and TIHTIH, Mohammed and Kurovics, Emese and Şahin, Ethem İlhan and Gömze, Antal László and Kocserha, István},
	doi = {10.1556/606.2022.00641},
	journal-iso = {POLLACK PERIODICA},
	journal = {POLLACK PERIODICA: AN INTERNATIONAL JOURNAL FOR ENGINEERING AND INFORMATION SCIENCES},
	volume = {18},
	unique-id = {33210574},
	issn = {1788-1994},
	abstract = {This study evaluated the possibility of producing innovative glass-ceramic foams from zeolite-poor rock (Tokaj, Hungary) using alkali-activation and reactive sintering techniques. The composition and morphology of the samples were studied using X-ray diffraction, X-ray fluorescence, scanning electron microscope, and computed tomography techniques. The influence of various sintering temperatures on glass-ceramic foams was examined. It has been observed that zeolite-poor rock has a self-foaming capability. The heat treatment temperature affects the pore size and distribution as well as the technical characteristics of the obtained samples. The resulting glass-ceramic foams possess moderate thermal conductivity ranging from 0.11 to 0.17 W mK-1 and good compressive strength (1.5–4.4 MPa). The produced samples might be utilized for thermal insulation, which would have both economic and environmental advantages.},
	year = {2023},
	eissn = {1788-3911},
	pages = {119-125},
	orcid-numbers = {Kurovics, Emese/0000-0001-5669-3318}
}

@article{MTMT:33191337,
	title = {Role of A-site (Sr), B-site (Y), and A, B sites (Sr, Y) substitution in lead-free BaTiO3 ceramic compounds: Structural, optical, microstructure, mechanical, and thermal conductivity properties},
	url = {https://m2.mtmt.hu/api/publication/33191337},
	author = {TIHTIH, Mohammed and FADOUL MOHAMMED IBRAHIM, JAMAL ELDIN and Basyooni, Mohamed A. and Kurovics, Emese and Belaid, Walid and Hussainova, Irina and Kocserha, István},
	doi = {10.1016/j.ceramint.2022.09.160},
	journal-iso = {CERAM INT},
	journal = {CERAMICS INTERNATIONAL},
	volume = {49},
	unique-id = {33191337},
	issn = {0272-8842},
	year = {2023},
	eissn = {1873-3956},
	pages = {1947-1959},
	orcid-numbers = {Basyooni, Mohamed A./0000-0001-8473-8253; Kurovics, Emese/0000-0001-5669-3318; Belaid, Walid/0000-0001-9810-9386; Hussainova, Irina/0000-0003-3081-2491}
}

@article{MTMT:33588272,
	title = {Phase composition and microstructure of ceramics made from kaolin mineral, alumina, and corn starch},
	url = {https://m2.mtmt.hu/api/publication/33588272},
	author = {Kurovics, Emese and FADOUL MOHAMMED IBRAHIM, JAMAL ELDIN and TIHTIH, Mohammed and Sebe, Emese},
	doi = {10.14382/epitoanyag-jsbcm.2022.34},
	journal-iso = {ÉPÍTŐANYAG-JSBCM},
	journal = {ÉPÍTŐANYAG: JOURNAL OF SILICATE BASED AND COMPOSITE MATERIALS},
	volume = {74},
	unique-id = {33588272},
	issn = {0013-970X},
	abstract = {In this work, Sedlecky ml kaolinite, Nabalox No. 315 alumina and corn starch were used. The powder mixtures were milled and uniaxially pressed into pellets. Some properties of the raw materials and mixtures were investigated like TG, DTA, and the gas composition formed during the sintering process. The pellet samples were pre-sintered in the electric kiln under an oxygenfree reduction atmosphere at 1250 °C and then sintered in nitrogen gas at 1450 °C. The composition and microstructure of the produced specimens were tested. 
		The pyrolysis results show that in reducing pre-sintering 25 wt% of the mass of the corn additive remove from the ceramic body as gas. The remained part of the corn can incorporate into the material structure, and it may affect the further heat treatment processes. The mullite content of the ceramic samples increased from 43 wt% to 70 wt% because of high-temperature sintering in nitrogen gas. The mullite crystal structure has also changed. The increase in the amount of mullite phase is a consequence of the sintering process since the free SiO2 and Al2O3 formed mullite crystals.
		Keywords: alumina, free SiO2, mullite, pyrolysis, sintering process},
	year = {2022},
	eissn = {2064-4477},
	pages = {237-240},
	orcid-numbers = {Kurovics, Emese/0000-0001-5669-3318}
}

@article{MTMT:33351300,
	title = {Characterization of Bi and Fe doping BaTiO3 nanoceramics prepared by Sol-gel method},
	url = {https://m2.mtmt.hu/api/publication/33351300},
	author = {TIHTIH, Mohammed and FADOUL MOHAMMED IBRAHIM, JAMAL ELDIN and Kurovics, Emese and Mohammed, Al-Saudi Sarah kareem and Kocserha, István},
	journal-iso = {Doktorandusz Almanach},
	journal = {Doktorandusz Almanach},
	volume = {1},
	unique-id = {33351300},
	issn = {2939-7294},
	abstract = {Fe-doped barium titanate (BFexT) and Bismuth (Bi) doped barium titanate (BaTiO3) nanoceramics were successfully prepared by a simple sol-gel process, these materials are very interesting and could be a candidate for many optoelectronic applications. X-ray diffraction (XRD) patterns of the obtained samples, heat-treated at a quite low temperature (800 °C/3h) revealed that BFexT and BBixT nanoceramics crystallized into a tetragonal phase perovskite structure. The occupation of the Ba and Ti sites by Fe and Bi in the BaTiO3 lattice and the evolution of the different parameters (crystallite size, lattice parameters and strain) as functions of the Fe doping have been discussed in details using several characterization techniques including XRD and Fourier Transformation Infrared (FT-IR). The band gap of the Bi-doped BaTiO3 nanopowders is lower compared to that of pure BaTiO3, as determined from the analysis of UV absorbance spectra.},
	year = {2022},
	pages = {40-50},
	orcid-numbers = {Kurovics, Emese/0000-0001-5669-3318}
}

@article{MTMT:33292604,
	title = {Preparation of an Aluminum Titania /Mullite Composite from the Raw Materials Alumina, Titania and Silica Fume},
	url = {https://m2.mtmt.hu/api/publication/33292604},
	author = {Mohammed, Al-Saudi Sarah kareem and Kurovics, Emese and FADOUL MOHAMMED IBRAHIM, JAMAL ELDIN and TIHTIH, Mohammed and Simon, Andrea and Géber, Róbert},
	doi = {10.18280/rcma.320502},
	journal-iso = {Revue des Composites et des Materiaux Avances},
	journal = {Revue des Composites et des Materiaux Avances},
	volume = {32},
	unique-id = {33292604},
	issn = {1169-7954},
	abstract = {The present work deals with the preparation of ceramic composites and the study of phase transformation. Three mixtures were prepared, the main mixture containing (80 wt%) alumina and (20 wt%) titania and the other two mixtures to which two amounts of silica fume were added at (5 and 10 wt%). The phase transformation was studied at two temperatures: 1200℃ and 1400℃. The X-ray diffraction results at 1200℃ show that the amorphous silica (silica fume) transformed into the crystalline phase cristobalite. At 1400℃, aluminum titanate formed by the reaction of alumina with titania, and mullite formed by the reaction of alumina with silica. The result of scanning electron microscopy shows that the addition of (5 wt%) silica leads to a microstructure with smaller grain size up to (500 nm), a lower porosity (20 vol%), a lower water absorption (7 wt%) and a thermal conductivity (1.514W/m.k).},
	keywords = {ALUMINA; Titania; Silica fume},
	year = {2022},
	pages = {223-228},
	orcid-numbers = {Kurovics, Emese/0000-0001-5669-3318; Géber, Róbert/0000-0002-0973-863X}
}

@article{MTMT:33210518,
	title = {Innovative Glass-Ceramic Foams Prepared by Alkali Activation and Reactive Sintering of Zeolite-Poor Rock and Sawdust},
	url = {https://m2.mtmt.hu/api/publication/33210518},
	author = {FADOUL MOHAMMED IBRAHIM, JAMAL ELDIN and TIHTIH, Mohammed and Kurovics, Emese and Gömze, Antal László and Kocserha, István},
	doi = {10.2139/ssrn.4065693},
	journal-iso = {SOC SCI RES NETW (SSRN)},
	journal = {SOCIAL SCIENCE RESEARCH NETWORK: SSRN},
	volume = {1},
	unique-id = {33210518},
	year = {2022},
	eissn = {1556-5068},
	orcid-numbers = {Kurovics, Emese/0000-0001-5669-3318}
}

@CONFERENCE{MTMT:33204709,
	title = {STUDY OF THE PROPERTIES OF ALUMINUM TITANATE WITH THE ADDITION OF SILICA FUME},
	url = {https://m2.mtmt.hu/api/publication/33204709},
	author = {Mohammed, Al-Saudi Sarah kareem and Kurovics, Emese and FADOUL MOHAMMED IBRAHIM, JAMAL ELDIN and TIHTIH, Mohammed and Simon, Andrea and Géber, Róbert and Gömze, Antal László},
	booktitle = {XXV. Tavaszi Szél Konferencia 2022. Absztraktkötet},
	unique-id = {33204709},
	abstract = {Materials science research in general and ceramics in particular are evolving at a rapid pace. To 
		achieve the best properties, ceramic technologies today aim to produce superior ceramic 
		products from readily available raw materials. Aluminum titanate ceramic is a composite 
		material mainly used as a refractory material in casting aluminum alloys compared to molten 
		aluminum alloys. It is versatile due to its high melting temperature, excellent chemical 
		resistance, low thermal expansion and excellent thermal shock resistance. In this work, the 
		formation of aluminum titanate was studied by sintering at 1400°C samples prepared from 
		mixtures of 80 wt% alumina and 20 wt% titania with the addition of 5 and 10 wt% silica fume. 
		X-ray diffraction and scanning electron microscopy results show that the addition of silica 
		stabilizes the structure of aluminum titanate Al2TiO5, and the mullite phase appears as a product 
		of alumina Al2O3 and silica SiO2. Mullite has a wide range of applications as it has good 
		mechanical and thermal properties. Silica Fume is a powdery by-product resulting from gasses 
		evaporated during the production of silicon or ferrosilicon alloys. It is a very fine, noncrystalline, spherical powder with a material size up to 0.1µm. The sample with 5 wt% silica 
		fume has the best properties because a small percentage of silica leads to stabilization of the 
		aluminum titanate while improving the microstructure, which consists of small particle sizes, 
		while too high a concentration of silica fume leads to grain growth, which negatively affects 
		mechanical strength. The sample with 5 wt% has low porosity, low water absorption and low 
		thermal conductivity value. This makes it attractive for applications such as thermal barriers, 
		combustion engines and catalyst reference materials},
	year = {2022},
	pages = {782},
	orcid-numbers = {Kurovics, Emese/0000-0001-5669-3318; Géber, Róbert/0000-0002-0973-863X}
}