Due to the formation of β˝-Al 2 O 3 , it is observed that dielectric properties increased.
📌 3 Maddede Bu Makale
🎯
Amaç & Hipotez:In this study, we report the production of β˝-Al 2 O 3 solid electrolyte by using Seydişehir α-Al 2 O 3 .
📊
Temel Bulgular & Veri:Seydişehir alumina was calcined at 1200 0 C for 2 hours.
💡
Sonuç & Katkı:Due to the formation of β˝-Al 2 O 3 , it is observed that dielectric properties increased.
🔬Tür:Makale
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:α-Al2O3 · Calcination · Sintering
Özet
In this study, we report the production of β˝-Al 2 O 3 solid electrolyte by using Seydişehir α-Al 2 O 3 . Alumina has to be low grain-sized to ensure α-β phase transformation. Therefore, grain refining process was applied to high grain sized Seydişehir alumina by jetmill grinding. Seydişehir alumina was calcined at 1200 0 C for 2 hours. After calcination, calcined Al 2 O 3 and Na 2 CO 3 were mixed during 2 hours in the mill. The samples were pressed and sintered to obtain β˝-Al 2 O 3 . β˝-Al 2 O 3 was obtained after sintering at 1550°C for 1 hour. Due to the formation of β˝-Al 2 O 3 , it is observed that dielectric properties increased.
Öztürk, Z. T., Engürlü, S., Kuşkonmaz, N. (2017). Investigation of the Production of β-Al<sub>2</sub>O<sub>3</sub> Solid Electrolyte from Seydişehir α-Al<sub>2</sub>O<sub>3</sub>. Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi, Cilt: 21 Sayı: 3, 816–819. https://doi.org/10.19113/sdufbed.31721
Subasri, R., Nafe, H.2003. An alternative approach to characterize the equilibrium in a biphasic α-Al2O3/Na-β-Alumina mixture as a function of sodium activity. Electrochimica Acta, 48(2003),3535-3540.
Song, H.І., Kim, E.S., Yoon, K.H.1988. Phase transformation and characteristics of beta alumina. Physica B,150 (1988), 148-159.
Roth, W.L., Devries, R.C. 1977. Comparison of the thermal stability of β and β˝-alumina high pressures. Journal of Solid State Chemistry, 20 (1977), 111-118.
Chengfei, Z, Jinhua, X., Guanghui, J. 2015. Effect of Na2O content on properties of beta alumina solid electrolytes. Materials Science in Semiconductor Processing, 31 (2015), 487- 492.
Dunn, S., Kumar, R.V., Fray, D.J.2000. Thermodynamic studies of the ionic conductor Ba β - Al2O3. Solid State Ionics, 128(2000), 141-144.
Sartori S, Martocci A, Muffato A, Guglielmi M.2004. Sol-Gel synthesis of Na Beta- Al2O3 powders. Journal of the European Ceramic Society, 24(2004), 911-914.
May, G.J.1978. The development of Beta-alumina for use in electro-chemical cells: A Survey. Journal of Power Sources,3(1978), 1-22.
Dae-Han, L, Sung-Tae, L., Jin-Sik, K., Sung-Ki, L.2017.Analysis of properties of partially stabilized zirconia-doped Na+-beta-alumina prepared by calcining-cum-sintering process. Materials Research Bulletin, (2017)
Jayaraman, V., Periaswami, G., Kutty, T.R.N. 2008. Gel- to- crysallite conversion technique for the syntheses of M-β/β˝-Alumina (M:Li,Na,K,Rb,Ca or Eu).Materials Research Bullettin, 43(2008), 2527-2537.
Jones, I.W., Miles, L.J. Production of beta alumina ceramic. United States Patent 1975.
Lu, X., Xia, G., Lemmon, J.P., Yang, Z.2010. Advanced materials for sodium-beta alumina batteries: Status, Challenges and Perspective. Journal of Power Sources, 195(2010), 2431-2442.
Subasri, R., Mathews, T., Sreedharan, O.M., Raghunatan, V.S.2003. Microwave processing of sodium beta alumina. Solid State Ionics, 158 (2003), 199-204.
Chengfei, Z., Jinhua, X., Guanghui, J. 2015. Effect of Na2O content on properties of beta alumina solid electrolytes, Materials Science in Semiconductor Processing, 31 (2015), 487–492.
Shqau, K. 2003. Characterization of the electronic conduction parameter of cation conducting solid electrolytes. Bericth Nr.141 Max-Planck-Institut für Metallforschung. Stuttgart University, Stuttgart, Germany, 2003.