Intention of this work was to obtain porous silicon dioxide ceramics by using boric acid as an inexpensive additive at low forming pressure and low sintering temperature. Starting raw material, smectite clay from surface coal mine Kolubara, Serbia, was purified from organic and inorganic impurities by using heat and chemical treatment. Boric acid was used as binding and sintering aid in amount of 0.5, 1 and 2 wt%. Powder was compacted by using different pressures: 40, 60 and 80 MPa. Pressed samples were sintered at 850, 1000, 1150, and 1300 degrees C for 4 h in air. A relatively high porosity of nearly 40% is obtained for the samples pressed at 40, 60 and 80 MPa and sintered at 1000 degrees C. Median pore size diameters are in the range of macroporous up to 0.2 mu m and 10 mu m in the samples sintered at 1150 and 1300 degrees C, respectively. X-ray diffraction (XRD), scaning electron microscopy (SEM), and porosimetry measurements were employed to characterize the phases and microstruct...ure of the obtained ceramics. The relations between mechanical characteristics of samples (Young modulus and Poisson ratio) and content of boric acid were studied.
TY - JOUR
AU - Kokunešoski, Maja
AU - Šaponjić, Aleksandra
AU - Maksimović, Vesna M.
AU - Stanković, Miroslav
AU - Pavlović, Mirjana
AU - Pantic, Jelena
AU - Majstorovic, Jelena
PY - 2014
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1432
AB - Intention of this work was to obtain porous silicon dioxide ceramics by using boric acid as an inexpensive additive at low forming pressure and low sintering temperature. Starting raw material, smectite clay from surface coal mine Kolubara, Serbia, was purified from organic and inorganic impurities by using heat and chemical treatment. Boric acid was used as binding and sintering aid in amount of 0.5, 1 and 2 wt%. Powder was compacted by using different pressures: 40, 60 and 80 MPa. Pressed samples were sintered at 850, 1000, 1150, and 1300 degrees C for 4 h in air. A relatively high porosity of nearly 40% is obtained for the samples pressed at 40, 60 and 80 MPa and sintered at 1000 degrees C. Median pore size diameters are in the range of macroporous up to 0.2 mu m and 10 mu m in the samples sintered at 1150 and 1300 degrees C, respectively. X-ray diffraction (XRD), scaning electron microscopy (SEM), and porosimetry measurements were employed to characterize the phases and microstructure of the obtained ceramics. The relations between mechanical characteristics of samples (Young modulus and Poisson ratio) and content of boric acid were studied.
PB - Elsevier Sci Ltd, Oxford
T2 - Ceramics International
T1 - Preparation and characterization of clay-based porous ceramics with boric acid as additive
VL - 40
IS - 9
SP - 14191
EP - 14196
DO - 10.1016/j.ceramint.2014.06.007
ER -
@article{
author = "Kokunešoski, Maja and Šaponjić, Aleksandra and Maksimović, Vesna M. and Stanković, Miroslav and Pavlović, Mirjana and Pantic, Jelena and Majstorovic, Jelena",
year = "2014",
abstract = "Intention of this work was to obtain porous silicon dioxide ceramics by using boric acid as an inexpensive additive at low forming pressure and low sintering temperature. Starting raw material, smectite clay from surface coal mine Kolubara, Serbia, was purified from organic and inorganic impurities by using heat and chemical treatment. Boric acid was used as binding and sintering aid in amount of 0.5, 1 and 2 wt%. Powder was compacted by using different pressures: 40, 60 and 80 MPa. Pressed samples were sintered at 850, 1000, 1150, and 1300 degrees C for 4 h in air. A relatively high porosity of nearly 40% is obtained for the samples pressed at 40, 60 and 80 MPa and sintered at 1000 degrees C. Median pore size diameters are in the range of macroporous up to 0.2 mu m and 10 mu m in the samples sintered at 1150 and 1300 degrees C, respectively. X-ray diffraction (XRD), scaning electron microscopy (SEM), and porosimetry measurements were employed to characterize the phases and microstructure of the obtained ceramics. The relations between mechanical characteristics of samples (Young modulus and Poisson ratio) and content of boric acid were studied.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Preparation and characterization of clay-based porous ceramics with boric acid as additive",
volume = "40",
number = "9",
pages = "14191-14196",
doi = "10.1016/j.ceramint.2014.06.007"
}
Kokunešoski, M., Šaponjić, A., Maksimović, V. M., Stanković, M., Pavlović, M., Pantic, J.,& Majstorovic, J.. (2014). Preparation and characterization of clay-based porous ceramics with boric acid as additive. in Ceramics International
Elsevier Sci Ltd, Oxford., 40(9), 14191-14196.
https://doi.org/10.1016/j.ceramint.2014.06.007
Kokunešoski M, Šaponjić A, Maksimović VM, Stanković M, Pavlović M, Pantic J, Majstorovic J. Preparation and characterization of clay-based porous ceramics with boric acid as additive. in Ceramics International. 2014;40(9):14191-14196.
doi:10.1016/j.ceramint.2014.06.007 .
Kokunešoski, Maja, Šaponjić, Aleksandra, Maksimović, Vesna M., Stanković, Miroslav, Pavlović, Mirjana, Pantic, Jelena, Majstorovic, Jelena, "Preparation and characterization of clay-based porous ceramics with boric acid as additive" in Ceramics International, 40, no. 9 (2014):14191-14196,
https://doi.org/10.1016/j.ceramint.2014.06.007 . .
