In this work, the processing of α-Al2O3 ceramics is studied in order to attain the microstructure and mechanical and thermal properties suitable for its application as a special refractory material in sintering furnaces. Samples of a commercial powder with addition of 3% polyvinyl alcohol, a binder additive, was compacted by uniaxial cold pressing and sintered in air at 1500 oC. The effects of powder preparation conditions and the consolidation process on density, thermal expansion and conductivity, hardness, flexural strength and microstructure were analyzed. Ceramics with densities of approximately 90% were obtained, with an average hardness of 14.9 ± 0.6 GPa, characteristic strength of 238 MPa and Weibull modulus of 8. The microstructure had grain sizes between 1 and 2 μm. Processing and powder consolidation and sintering parameters resulted in alumina ceramic with suitable properties for its intended purpose.
TY - CONF
AU - Barreto Carneiro, Marcio
AU - Mančić, Lidija
AU - Santos, Claudinei
AU - Marinković, Bojan
PY - 2016
UR - https://dais.sanu.ac.rs/123456789/2395
AB - In this work, the processing of α-Al2O3 ceramics is studied in order to attain the microstructure and mechanical and thermal properties suitable for its application as a special refractory material in sintering furnaces. Samples of a commercial powder with addition of 3% polyvinyl alcohol, a binder additive, was compacted by uniaxial cold pressing and sintered in air at 1500 oC. The effects of powder preparation conditions and the consolidation process on density, thermal expansion and conductivity, hardness, flexural strength and microstructure were analyzed. Ceramics with densities of approximately 90% were obtained, with an average hardness of 14.9 ± 0.6 GPa, characteristic strength of 238 MPa and Weibull modulus of 8. The microstructure had grain sizes between 1 and 2 μm. Processing and powder consolidation and sintering parameters resulted in alumina ceramic with suitable properties for its intended purpose.
PB - Zurich : Trans Tech Publications Inc
C3 - The 59th Brazilian Ceramic Conference
T1 - Development of α-Al2O3 Ceramics for Bottom of Sintering Impeller Furnace
SP - 91
EP - 96
DO - 10.4028/www.scientific.net/MSF.881.91
UR - https://hdl.handle.net/21.15107/rcub_dais_2395
ER -
@conference{
editor = "Dos Santos Ortega, Fernando",
author = "Barreto Carneiro, Marcio and Mančić, Lidija and Santos, Claudinei and Marinković, Bojan",
year = "2016",
abstract = "In this work, the processing of α-Al2O3 ceramics is studied in order to attain the microstructure and mechanical and thermal properties suitable for its application as a special refractory material in sintering furnaces. Samples of a commercial powder with addition of 3% polyvinyl alcohol, a binder additive, was compacted by uniaxial cold pressing and sintered in air at 1500 oC. The effects of powder preparation conditions and the consolidation process on density, thermal expansion and conductivity, hardness, flexural strength and microstructure were analyzed. Ceramics with densities of approximately 90% were obtained, with an average hardness of 14.9 ± 0.6 GPa, characteristic strength of 238 MPa and Weibull modulus of 8. The microstructure had grain sizes between 1 and 2 μm. Processing and powder consolidation and sintering parameters resulted in alumina ceramic with suitable properties for its intended purpose.",
publisher = "Zurich : Trans Tech Publications Inc",
journal = "The 59th Brazilian Ceramic Conference",
title = "Development of α-Al2O3 Ceramics for Bottom of Sintering Impeller Furnace",
pages = "91-96",
doi = "10.4028/www.scientific.net/MSF.881.91",
url = "https://hdl.handle.net/21.15107/rcub_dais_2395"
}
Dos Santos Ortega, F., Barreto Carneiro, M., Mančić, L., Santos, C.,& Marinković, B.. (2016). Development of α-Al2O3 Ceramics for Bottom of Sintering Impeller Furnace. in The 59th Brazilian Ceramic Conference
Zurich : Trans Tech Publications Inc., 91-96.
https://doi.org/10.4028/www.scientific.net/MSF.881.91
https://hdl.handle.net/21.15107/rcub_dais_2395
Dos Santos Ortega F, Barreto Carneiro M, Mančić L, Santos C, Marinković B. Development of α-Al2O3 Ceramics for Bottom of Sintering Impeller Furnace. in The 59th Brazilian Ceramic Conference. 2016;:91-96.
doi:10.4028/www.scientific.net/MSF.881.91
https://hdl.handle.net/21.15107/rcub_dais_2395 .
Dos Santos Ortega, Fernando, Barreto Carneiro, Marcio, Mančić, Lidija, Santos, Claudinei, Marinković, Bojan, "Development of α-Al2O3 Ceramics for Bottom of Sintering Impeller Furnace" in The 59th Brazilian Ceramic Conference (2016):91-96,
https://doi.org/10.4028/www.scientific.net/MSF.881.91 .,
https://hdl.handle.net/21.15107/rcub_dais_2395 .
