Microstructure and phase composition of steatite ceramics sintered by traditional and spark plasma sintering
Authors
Terzić, Anja
Obradović, Nina

Pouchly, Vaclav
Stojanović, Jovica
Maca, Karel

Pavlović, Vladimir B.

Article (Published version)
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The influence of the sintering method on the mineral phase transformations and development of the crystalline microstructure of steatite ceramics was investigated. The steatite samples were fabricated from talc and bentonite as low-cost raw materials. Feldspar and barium carbonate, as fluxing agents, were altered in the steatite composition. Dilatometric analysis was applied in the monitoring of the dimensional changes and thereby densification of steatite during the traditional sintering (TS) procedure up to 1200°C. Spark plasma sintering (SPS) method was used under the following sintering conditions: 100°C/min heating rate, uniaxial pressure of 50 MPa; sintering temperature 800°C/1 min or 1000°C/2 min. Crystallinity changes and mineral phase transition during sintering were observed by X-ray diffraction technique. Microstructural visualization of the samples and the spatial arrangements of individual chemical elements were achieved via scanning electron microscopy equipped with the E...DS mapping. It was found that SPS sintering facilitated all microstructural changes during high temperature treatment and shifted them to lower temperatures. SPS treatment conducted at 1000°C resulted in maximum densification of the steatite powder compacts and the formation stabilized protoenstatite structure. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. ON 172057 and Grant no. III 45008]
Keywords:
steatite ceramics / spark plasma sintering / electron microscopy / x-ray analysis / microstructure-final / magnesium silicateSource:
Science of Sintering, 2018, 50, 3, 299-312Publisher:
- Belgrade : ETRAN
Funding / projects:
- Directed synthesis, structure and properties of multifunctional materials (RS-172057)
- Development and application of multifunctional materials using domestic raw materials in upgraded processing lines (RS-45008)
DOI: 10.2298/SOS1803299T
ISSN: 1820-7413; 0350-820X
WoS: 000452976600003
Scopus: 2-s2.0-85070026273
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Terzić, Anja AU - Obradović, Nina AU - Pouchly, Vaclav AU - Stojanović, Jovica AU - Maca, Karel AU - Pavlović, Vladimir B. PY - 2018 UR - https://dais.sanu.ac.rs/123456789/4536 AB - The influence of the sintering method on the mineral phase transformations and development of the crystalline microstructure of steatite ceramics was investigated. The steatite samples were fabricated from talc and bentonite as low-cost raw materials. Feldspar and barium carbonate, as fluxing agents, were altered in the steatite composition. Dilatometric analysis was applied in the monitoring of the dimensional changes and thereby densification of steatite during the traditional sintering (TS) procedure up to 1200°C. Spark plasma sintering (SPS) method was used under the following sintering conditions: 100°C/min heating rate, uniaxial pressure of 50 MPa; sintering temperature 800°C/1 min or 1000°C/2 min. Crystallinity changes and mineral phase transition during sintering were observed by X-ray diffraction technique. Microstructural visualization of the samples and the spatial arrangements of individual chemical elements were achieved via scanning electron microscopy equipped with the EDS mapping. It was found that SPS sintering facilitated all microstructural changes during high temperature treatment and shifted them to lower temperatures. SPS treatment conducted at 1000°C resulted in maximum densification of the steatite powder compacts and the formation stabilized protoenstatite structure. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. ON 172057 and Grant no. III 45008] PB - Belgrade : ETRAN T2 - Science of Sintering T1 - Microstructure and phase composition of steatite ceramics sintered by traditional and spark plasma sintering SP - 299 EP - 312 VL - 50 IS - 3 DO - 10.2298/SOS1803299T UR - https://hdl.handle.net/21.15107/rcub_dais_4536 ER -
@article{ author = "Terzić, Anja and Obradović, Nina and Pouchly, Vaclav and Stojanović, Jovica and Maca, Karel and Pavlović, Vladimir B.", year = "2018", abstract = "The influence of the sintering method on the mineral phase transformations and development of the crystalline microstructure of steatite ceramics was investigated. The steatite samples were fabricated from talc and bentonite as low-cost raw materials. Feldspar and barium carbonate, as fluxing agents, were altered in the steatite composition. Dilatometric analysis was applied in the monitoring of the dimensional changes and thereby densification of steatite during the traditional sintering (TS) procedure up to 1200°C. Spark plasma sintering (SPS) method was used under the following sintering conditions: 100°C/min heating rate, uniaxial pressure of 50 MPa; sintering temperature 800°C/1 min or 1000°C/2 min. Crystallinity changes and mineral phase transition during sintering were observed by X-ray diffraction technique. Microstructural visualization of the samples and the spatial arrangements of individual chemical elements were achieved via scanning electron microscopy equipped with the EDS mapping. It was found that SPS sintering facilitated all microstructural changes during high temperature treatment and shifted them to lower temperatures. SPS treatment conducted at 1000°C resulted in maximum densification of the steatite powder compacts and the formation stabilized protoenstatite structure. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. ON 172057 and Grant no. III 45008]", publisher = "Belgrade : ETRAN", journal = "Science of Sintering", title = "Microstructure and phase composition of steatite ceramics sintered by traditional and spark plasma sintering", pages = "299-312", volume = "50", number = "3", doi = "10.2298/SOS1803299T", url = "https://hdl.handle.net/21.15107/rcub_dais_4536" }
Terzić, A., Obradović, N., Pouchly, V., Stojanović, J., Maca, K.,& Pavlović, V. B.. (2018). Microstructure and phase composition of steatite ceramics sintered by traditional and spark plasma sintering. in Science of Sintering Belgrade : ETRAN., 50(3), 299-312. https://doi.org/10.2298/SOS1803299T https://hdl.handle.net/21.15107/rcub_dais_4536
Terzić A, Obradović N, Pouchly V, Stojanović J, Maca K, Pavlović VB. Microstructure and phase composition of steatite ceramics sintered by traditional and spark plasma sintering. in Science of Sintering. 2018;50(3):299-312. doi:10.2298/SOS1803299T https://hdl.handle.net/21.15107/rcub_dais_4536 .
Terzić, Anja, Obradović, Nina, Pouchly, Vaclav, Stojanović, Jovica, Maca, Karel, Pavlović, Vladimir B., "Microstructure and phase composition of steatite ceramics sintered by traditional and spark plasma sintering" in Science of Sintering, 50, no. 3 (2018):299-312, https://doi.org/10.2298/SOS1803299T ., https://hdl.handle.net/21.15107/rcub_dais_4536 .