Structural, Morphological and Electrical Properties of Alumina/YAG Composites as Solid Electrolyte for IT - SOFC
2018
Authors
Egelja, AdelaPašalić, Snežana
Dodevski, Vladimir
Kragović, Milan M.
Stojković-Simatović, Ivana
Radovanović, Željko
Stojmenović, Marija
Article (Published version)
Metadata
Show full item recordAbstract
Alumina/YAG composites (AYX_t) with high relative density (99.2 %TD) were successfully obtained by mixing commercial alumina powder with different volume fractions of yttrium aluminium garnet (Y3Al5O12-YAG; 7, 14, 21 and 28). YAG was synthetized by nitrate glycine reaction in the form of precursor powder. Polycrystalline YAG powder was obtained by calcination at 950 degrees C for 2 h. Additionally, obtained compositions were characterized by XRD, SEM, EDX and electrochemical impedance spectroscopy. By XRPD analysis was found that the particle size of YAG powders lies in the nanometric range (being lower than 35 nm). By SEM microphotographs of composites were confirmed the formation of a conductive path consisting from mutually interconnected YAG particles. This was confirmed by the electrochemical impedance spectroscopy. The highest electrical conductivity of grain (K-g) and grain boundary (K-gb) at 700 degrees C amounted to 2.22x10(-2) ohm(-1)cm(-1) and 9.44x10(-3) ohm(-1) cm(-1), res...pectively, was measured in the composite containing 21 vol% of YAG.
Keywords:
Al2O3-YAG / Composites / Electrical conductivitySource:
Science of Sintering, 2018, 50, 3, 357-369Publisher:
- Međunarodni Institut za nauku o sinterovanju, Beograd
DOI: 10.2298/SOS1803357E
ISSN: 0350-820X
WoS: 000452976600008
Scopus: 2-s2.0-85070026452
Institution/Community
Inovacioni centarTY - JOUR AU - Egelja, Adela AU - Pašalić, Snežana AU - Dodevski, Vladimir AU - Kragović, Milan M. AU - Stojković-Simatović, Ivana AU - Radovanović, Željko AU - Stojmenović, Marija PY - 2018 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3898 AB - Alumina/YAG composites (AYX_t) with high relative density (99.2 %TD) were successfully obtained by mixing commercial alumina powder with different volume fractions of yttrium aluminium garnet (Y3Al5O12-YAG; 7, 14, 21 and 28). YAG was synthetized by nitrate glycine reaction in the form of precursor powder. Polycrystalline YAG powder was obtained by calcination at 950 degrees C for 2 h. Additionally, obtained compositions were characterized by XRD, SEM, EDX and electrochemical impedance spectroscopy. By XRPD analysis was found that the particle size of YAG powders lies in the nanometric range (being lower than 35 nm). By SEM microphotographs of composites were confirmed the formation of a conductive path consisting from mutually interconnected YAG particles. This was confirmed by the electrochemical impedance spectroscopy. The highest electrical conductivity of grain (K-g) and grain boundary (K-gb) at 700 degrees C amounted to 2.22x10(-2) ohm(-1)cm(-1) and 9.44x10(-3) ohm(-1) cm(-1), respectively, was measured in the composite containing 21 vol% of YAG. PB - Međunarodni Institut za nauku o sinterovanju, Beograd T2 - Science of Sintering T1 - Structural, Morphological and Electrical Properties of Alumina/YAG Composites as Solid Electrolyte for IT - SOFC EP - 369 IS - 3 SP - 357 VL - 50 DO - 10.2298/SOS1803357E ER -
@article{ author = "Egelja, Adela and Pašalić, Snežana and Dodevski, Vladimir and Kragović, Milan M. and Stojković-Simatović, Ivana and Radovanović, Željko and Stojmenović, Marija", year = "2018", abstract = "Alumina/YAG composites (AYX_t) with high relative density (99.2 %TD) were successfully obtained by mixing commercial alumina powder with different volume fractions of yttrium aluminium garnet (Y3Al5O12-YAG; 7, 14, 21 and 28). YAG was synthetized by nitrate glycine reaction in the form of precursor powder. Polycrystalline YAG powder was obtained by calcination at 950 degrees C for 2 h. Additionally, obtained compositions were characterized by XRD, SEM, EDX and electrochemical impedance spectroscopy. By XRPD analysis was found that the particle size of YAG powders lies in the nanometric range (being lower than 35 nm). By SEM microphotographs of composites were confirmed the formation of a conductive path consisting from mutually interconnected YAG particles. This was confirmed by the electrochemical impedance spectroscopy. The highest electrical conductivity of grain (K-g) and grain boundary (K-gb) at 700 degrees C amounted to 2.22x10(-2) ohm(-1)cm(-1) and 9.44x10(-3) ohm(-1) cm(-1), respectively, was measured in the composite containing 21 vol% of YAG.", publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd", journal = "Science of Sintering", title = "Structural, Morphological and Electrical Properties of Alumina/YAG Composites as Solid Electrolyte for IT - SOFC", pages = "369-357", number = "3", volume = "50", doi = "10.2298/SOS1803357E" }
Egelja, A., Pašalić, S., Dodevski, V., Kragović, M. M., Stojković-Simatović, I., Radovanović, Ž.,& Stojmenović, M.. (2018). Structural, Morphological and Electrical Properties of Alumina/YAG Composites as Solid Electrolyte for IT - SOFC. in Science of Sintering Međunarodni Institut za nauku o sinterovanju, Beograd., 50(3), 357-369. https://doi.org/10.2298/SOS1803357E
Egelja A, Pašalić S, Dodevski V, Kragović MM, Stojković-Simatović I, Radovanović Ž, Stojmenović M. Structural, Morphological and Electrical Properties of Alumina/YAG Composites as Solid Electrolyte for IT - SOFC. in Science of Sintering. 2018;50(3):357-369. doi:10.2298/SOS1803357E .
Egelja, Adela, Pašalić, Snežana, Dodevski, Vladimir, Kragović, Milan M., Stojković-Simatović, Ivana, Radovanović, Željko, Stojmenović, Marija, "Structural, Morphological and Electrical Properties of Alumina/YAG Composites as Solid Electrolyte for IT - SOFC" in Science of Sintering, 50, no. 3 (2018):357-369, https://doi.org/10.2298/SOS1803357E . .