Effects of mechanical-activation and TiO2 addition on the behavior of two-step sintered steatite ceramics
Само за регистроване кориснике
2019
Аутори
Terzić, AnjaObradović, Nina
Kosanović, Darko
Stojanović, Jovica
Đorđević, Antonije
Andrić, Ljubiša
Pavlović, Vladimir B.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Steatite, as ceramic with composition predominantly resting on magnesium silicate, was produced from economic resources – talc, aluminosilicate clays, and either BaCO3 or feldspar as flux. Titanium dioxide was a doping agent. Four steatite mixtures were mechanically activated in a planetary ball mill for 30, 45 or 60 min, prior to the thermal treatment. Two-step sintering with initial phase set at 1350 °C and holding period conducted at 1250 °C was applied to initiate diffusion and prevent grain growth. Thereby, a high density ceramic material with low-porous submicron structure was acquired. The effects of TiO2 addition on densification, microstructure, and dielectric characteristics of steatites were monitored. The thermal stability of green mixtures was tested by differential thermal and thermogravimetric analyses. Changes in crystallinity and mineral phase composition were observed by the X-ray diffraction technique. Microstructural visualization with spatial arrangements of indivi...dual chemical elements on surface of the sintered ceramics was acquired by scanning electron microscopy accompanied with EDS mapping. In order to test the possibility of employment of the obtained steatites in insulation materials, electrical measurements were conducted by recording variations of the dielectric constant and loss tangent as a function of alternations in the mix-design and the mechanical activation period.
Кључне речи:
sintering / electron microscopy / microstructure-final / X-ray methods / dielectric properties / MgO / insulatorsИзвор:
Ceramics International, 2019, 45, 3, 3013-3022Издавач:
- Elsevier
Финансирање / пројекти:
- Усмерена синтеза, структура и својства мултифункционалних материјала (RS-MESTD-Basic Research (BR or ON)-172057)
- Развој и примена мултифункционалних материјала на бази домаћих сировина модернизацијом традиционалних технологија (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45008)
Напомена:
- Peer-reviewed manuscript: https://hdl.handle.net/21.15107/rcub_dais_4645
Повезане информације:
- Друга верзија
https://hdl.handle.net/21.15107/rcub_dais_4645
DOI: 10.1016/j.ceramint.2018.10.120
ISSN: 0272-8842
WoS: 000456225900014
Scopus: 2-s2.0-85055019473
URI
http://www.sciencedirect.com/science/article/pii/S0272884218329262https://dais.sanu.ac.rs/123456789/4635
Институција/група
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Terzić, Anja AU - Obradović, Nina AU - Kosanović, Darko AU - Stojanović, Jovica AU - Đorđević, Antonije AU - Andrić, Ljubiša AU - Pavlović, Vladimir B. PY - 2019 UR - http://www.sciencedirect.com/science/article/pii/S0272884218329262 UR - https://dais.sanu.ac.rs/123456789/4635 AB - Steatite, as ceramic with composition predominantly resting on magnesium silicate, was produced from economic resources – talc, aluminosilicate clays, and either BaCO3 or feldspar as flux. Titanium dioxide was a doping agent. Four steatite mixtures were mechanically activated in a planetary ball mill for 30, 45 or 60 min, prior to the thermal treatment. Two-step sintering with initial phase set at 1350 °C and holding period conducted at 1250 °C was applied to initiate diffusion and prevent grain growth. Thereby, a high density ceramic material with low-porous submicron structure was acquired. The effects of TiO2 addition on densification, microstructure, and dielectric characteristics of steatites were monitored. The thermal stability of green mixtures was tested by differential thermal and thermogravimetric analyses. Changes in crystallinity and mineral phase composition were observed by the X-ray diffraction technique. Microstructural visualization with spatial arrangements of individual chemical elements on surface of the sintered ceramics was acquired by scanning electron microscopy accompanied with EDS mapping. In order to test the possibility of employment of the obtained steatites in insulation materials, electrical measurements were conducted by recording variations of the dielectric constant and loss tangent as a function of alternations in the mix-design and the mechanical activation period. PB - Elsevier T2 - Ceramics International T1 - Effects of mechanical-activation and TiO2 addition on the behavior of two-step sintered steatite ceramics SP - 3013 EP - 3022 VL - 45 IS - 3 DO - 10.1016/j.ceramint.2018.10.120 UR - https://hdl.handle.net/21.15107/rcub_dais_4635 ER -
@article{ author = "Terzić, Anja and Obradović, Nina and Kosanović, Darko and Stojanović, Jovica and Đorđević, Antonije and Andrić, Ljubiša and Pavlović, Vladimir B.", year = "2019", abstract = "Steatite, as ceramic with composition predominantly resting on magnesium silicate, was produced from economic resources – talc, aluminosilicate clays, and either BaCO3 or feldspar as flux. Titanium dioxide was a doping agent. Four steatite mixtures were mechanically activated in a planetary ball mill for 30, 45 or 60 min, prior to the thermal treatment. Two-step sintering with initial phase set at 1350 °C and holding period conducted at 1250 °C was applied to initiate diffusion and prevent grain growth. Thereby, a high density ceramic material with low-porous submicron structure was acquired. The effects of TiO2 addition on densification, microstructure, and dielectric characteristics of steatites were monitored. The thermal stability of green mixtures was tested by differential thermal and thermogravimetric analyses. Changes in crystallinity and mineral phase composition were observed by the X-ray diffraction technique. Microstructural visualization with spatial arrangements of individual chemical elements on surface of the sintered ceramics was acquired by scanning electron microscopy accompanied with EDS mapping. In order to test the possibility of employment of the obtained steatites in insulation materials, electrical measurements were conducted by recording variations of the dielectric constant and loss tangent as a function of alternations in the mix-design and the mechanical activation period.", publisher = "Elsevier", journal = "Ceramics International", title = "Effects of mechanical-activation and TiO2 addition on the behavior of two-step sintered steatite ceramics", pages = "3013-3022", volume = "45", number = "3", doi = "10.1016/j.ceramint.2018.10.120", url = "https://hdl.handle.net/21.15107/rcub_dais_4635" }
Terzić, A., Obradović, N., Kosanović, D., Stojanović, J., Đorđević, A., Andrić, L.,& Pavlović, V. B.. (2019). Effects of mechanical-activation and TiO2 addition on the behavior of two-step sintered steatite ceramics. in Ceramics International Elsevier., 45(3), 3013-3022. https://doi.org/10.1016/j.ceramint.2018.10.120 https://hdl.handle.net/21.15107/rcub_dais_4635
Terzić A, Obradović N, Kosanović D, Stojanović J, Đorđević A, Andrić L, Pavlović VB. Effects of mechanical-activation and TiO2 addition on the behavior of two-step sintered steatite ceramics. in Ceramics International. 2019;45(3):3013-3022. doi:10.1016/j.ceramint.2018.10.120 https://hdl.handle.net/21.15107/rcub_dais_4635 .
Terzić, Anja, Obradović, Nina, Kosanović, Darko, Stojanović, Jovica, Đorđević, Antonije, Andrić, Ljubiša, Pavlović, Vladimir B., "Effects of mechanical-activation and TiO2 addition on the behavior of two-step sintered steatite ceramics" in Ceramics International, 45, no. 3 (2019):3013-3022, https://doi.org/10.1016/j.ceramint.2018.10.120 ., https://hdl.handle.net/21.15107/rcub_dais_4635 .