Mayenite (Ca12Al14O33) samples have been synthesized in ambient air, argon, and nitrogen atmospheres to vary the defect chemistry and to investigate its role in thermal conductivity. Highly dense sintered pellets (SEM) were obtained through spark plasma sintering and the X-ray diffractograms revealed predominantly mayenite phase with the presence of a minor amount of secondary phases. Thermal conductivity was measured for the sintered samples and it was observed that mayenite synthesized in nitrogen atmosphere exhibited a colossal value of 579 Wm-1K-1 at room temperature close to that of cubic-BN, comparable with that of metals.
Кључне речи:
ceramics / sintering / transport properties / thermal conductivity
Извор:
Journal of Innovative Materials in Extreme Conditions, 2020, 1, 1, 7-11
TY - JOUR
AU - Johnson, Teslin
AU - Awin, Eranezhuth Wasan
AU - Prekajski-Đorđević, Marija D.
AU - Matović, Branko
AU - Kumar, Ravi
PY - 2020
UR - https://vinar.vin.bg.ac.rs/handle/123456789/9936
AB - Mayenite (Ca12Al14O33) samples have been synthesized in ambient air, argon, and nitrogen atmospheres to vary the defect chemistry and to investigate its role in thermal conductivity. Highly dense sintered pellets (SEM) were obtained through spark plasma sintering and the X-ray diffractograms revealed predominantly mayenite phase with the presence of a minor amount of secondary phases. Thermal conductivity was measured for the sintered samples and it was observed that mayenite synthesized in nitrogen atmosphere exhibited a colossal value of 579 Wm-1K-1 at room temperature close to that of cubic-BN, comparable with that of metals.
T2 - Journal of Innovative Materials in Extreme Conditions
T1 - Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33)
VL - 1
IS - 1
SP - 7
EP - 11
UR - https://hdl.handle.net/21.15107/rcub_vinar_9936
ER -
@article{
author = "Johnson, Teslin and Awin, Eranezhuth Wasan and Prekajski-Đorđević, Marija D. and Matović, Branko and Kumar, Ravi",
year = "2020",
abstract = "Mayenite (Ca12Al14O33) samples have been synthesized in ambient air, argon, and nitrogen atmospheres to vary the defect chemistry and to investigate its role in thermal conductivity. Highly dense sintered pellets (SEM) were obtained through spark plasma sintering and the X-ray diffractograms revealed predominantly mayenite phase with the presence of a minor amount of secondary phases. Thermal conductivity was measured for the sintered samples and it was observed that mayenite synthesized in nitrogen atmosphere exhibited a colossal value of 579 Wm-1K-1 at room temperature close to that of cubic-BN, comparable with that of metals.",
journal = "Journal of Innovative Materials in Extreme Conditions",
title = "Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33)",
volume = "1",
number = "1",
pages = "7-11",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9936"
}
Johnson, T., Awin, E. W., Prekajski-Đorđević, M. D., Matović, B.,& Kumar, R.. (2020). Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33). in Journal of Innovative Materials in Extreme Conditions, 1(1), 7-11.
https://hdl.handle.net/21.15107/rcub_vinar_9936
Johnson T, Awin EW, Prekajski-Đorđević MD, Matović B, Kumar R. Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33). in Journal of Innovative Materials in Extreme Conditions. 2020;1(1):7-11.
https://hdl.handle.net/21.15107/rcub_vinar_9936 .
Johnson, Teslin, Awin, Eranezhuth Wasan, Prekajski-Đorđević, Marija D., Matović, Branko, Kumar, Ravi, "Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33)" in Journal of Innovative Materials in Extreme Conditions, 1, no. 1 (2020):7-11,
https://hdl.handle.net/21.15107/rcub_vinar_9936 .
