Analytical modeling of activation procedure applied in α-alumina thermo-mechanical synthesis
Abstract
The impact of the mechanical processing parameters on the alumina grain-size distribution affiliated characteristics and on the γ to α phase transformation rate was investigated. The moderation in the alumina samples behavior has been correlated to the granulometric and mineralogical changes induced by activation via an ultra-centrifugal mill. The assessment of the activation process variables influence on the final quality of the product parameters was conveyed in order to optimize the mechanical treatment of the alumina, which otherwise could be regarded as either energetically or economically unsustainable procedure. The Response Surface Method, Standard Score Analysis and Principal Component Analysis were applied as means of the mechanical activation optimization. The r 2 values obtained by developed models were in range from 0.816 to 0.988. The established mathematical models were able to precisely predict the quality parameters in a broad range of processing parameters. The Stand...ard Score Analysis emphasized that the optimal output sample was obtained using a sieve mesh of 120μm set of processing parameters (SS=0.96). Diverse comparison analyses disclosed that the optimal set of activation process parameters could reduce the negative effect of γ-alumina samples immanent properties on the final score, and furthermore to enhance the rate of γ to α transition which would improve energetic and economic sustainability of the alumina phase transformation procedure. © 2015 Elsevier Ltd and Techna Group S.r.l.
Keywords:
milling / electron microscopy / grain size / Al2O3 / refractories / thermal applications / Response Surface AnalysisSource:
Ceramics International, 2015, 41, 9, Part B, 11908-11917Publisher:
- Elsevier
Funding / projects:
- Osmotic dehydration of food - energy and ecological aspects of sustainable production (RS-31055)
- Development and application of multifunctional materials using domestic raw materials in upgraded processing lines (RS-45008)
- Directed synthesis, structure and properties of multifunctional materials (RS-172057)
DOI: 10.1016/j.ceramint.2015.05.158
ISSN: 0272-8842
WoS: 000359165300042
Scopus: 2-s2.0-84930911382
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Terzić, Anja AU - Pezo, Lato AU - Andrić, Ljubiša AU - Mitić, Vojislav PY - 2015 UR - https://dais.sanu.ac.rs/123456789/3525 AB - The impact of the mechanical processing parameters on the alumina grain-size distribution affiliated characteristics and on the γ to α phase transformation rate was investigated. The moderation in the alumina samples behavior has been correlated to the granulometric and mineralogical changes induced by activation via an ultra-centrifugal mill. The assessment of the activation process variables influence on the final quality of the product parameters was conveyed in order to optimize the mechanical treatment of the alumina, which otherwise could be regarded as either energetically or economically unsustainable procedure. The Response Surface Method, Standard Score Analysis and Principal Component Analysis were applied as means of the mechanical activation optimization. The r 2 values obtained by developed models were in range from 0.816 to 0.988. The established mathematical models were able to precisely predict the quality parameters in a broad range of processing parameters. The Standard Score Analysis emphasized that the optimal output sample was obtained using a sieve mesh of 120μm set of processing parameters (SS=0.96). Diverse comparison analyses disclosed that the optimal set of activation process parameters could reduce the negative effect of γ-alumina samples immanent properties on the final score, and furthermore to enhance the rate of γ to α transition which would improve energetic and economic sustainability of the alumina phase transformation procedure. © 2015 Elsevier Ltd and Techna Group S.r.l. PB - Elsevier T2 - Ceramics International T1 - Analytical modeling of activation procedure applied in α-alumina thermo-mechanical synthesis SP - 11908 EP - 11917 VL - 41 IS - 9, Part B DO - 10.1016/j.ceramint.2015.05.158 UR - https://hdl.handle.net/21.15107/rcub_dais_3525 ER -
@article{ author = "Terzić, Anja and Pezo, Lato and Andrić, Ljubiša and Mitić, Vojislav", year = "2015", abstract = "The impact of the mechanical processing parameters on the alumina grain-size distribution affiliated characteristics and on the γ to α phase transformation rate was investigated. The moderation in the alumina samples behavior has been correlated to the granulometric and mineralogical changes induced by activation via an ultra-centrifugal mill. The assessment of the activation process variables influence on the final quality of the product parameters was conveyed in order to optimize the mechanical treatment of the alumina, which otherwise could be regarded as either energetically or economically unsustainable procedure. The Response Surface Method, Standard Score Analysis and Principal Component Analysis were applied as means of the mechanical activation optimization. The r 2 values obtained by developed models were in range from 0.816 to 0.988. The established mathematical models were able to precisely predict the quality parameters in a broad range of processing parameters. The Standard Score Analysis emphasized that the optimal output sample was obtained using a sieve mesh of 120μm set of processing parameters (SS=0.96). Diverse comparison analyses disclosed that the optimal set of activation process parameters could reduce the negative effect of γ-alumina samples immanent properties on the final score, and furthermore to enhance the rate of γ to α transition which would improve energetic and economic sustainability of the alumina phase transformation procedure. © 2015 Elsevier Ltd and Techna Group S.r.l.", publisher = "Elsevier", journal = "Ceramics International", title = "Analytical modeling of activation procedure applied in α-alumina thermo-mechanical synthesis", pages = "11908-11917", volume = "41", number = "9, Part B", doi = "10.1016/j.ceramint.2015.05.158", url = "https://hdl.handle.net/21.15107/rcub_dais_3525" }
Terzić, A., Pezo, L., Andrić, L.,& Mitić, V.. (2015). Analytical modeling of activation procedure applied in α-alumina thermo-mechanical synthesis. in Ceramics International Elsevier., 41(9, Part B), 11908-11917. https://doi.org/10.1016/j.ceramint.2015.05.158 https://hdl.handle.net/21.15107/rcub_dais_3525
Terzić A, Pezo L, Andrić L, Mitić V. Analytical modeling of activation procedure applied in α-alumina thermo-mechanical synthesis. in Ceramics International. 2015;41(9, Part B):11908-11917. doi:10.1016/j.ceramint.2015.05.158 https://hdl.handle.net/21.15107/rcub_dais_3525 .
Terzić, Anja, Pezo, Lato, Andrić, Ljubiša, Mitić, Vojislav, "Analytical modeling of activation procedure applied in α-alumina thermo-mechanical synthesis" in Ceramics International, 41, no. 9, Part B (2015):11908-11917, https://doi.org/10.1016/j.ceramint.2015.05.158 ., https://hdl.handle.net/21.15107/rcub_dais_3525 .