Fabrication and characterization of Al2O3-Y2O3 based composite

مهندسی متالورژی و مواد

Volume 35, Issue 1 - Serial Number 33, April 2024, Pages 65-74   

Document Type: Original Articles

DOI: 10.22067/jmme.2024.83191.1115

Author

Sayed Ali Hassanzadeh Tabrizi^*

Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

Abstract

In the present research, nanoparticles based on the alumina-yttria system were synthesized using a sol-gel method. Then, the effect of heat treatment on the phase evolution and crystallite size in this composite system was investigated. The produced composite powder was characterized using X-ray diffraction and scanning electron microscopy. Scherrer equation was used to investigate the effect of temperature on crystallite sizes. The composite powder was cold isostatically pressed and subjected to a pressureless sintering process at different temperatures to evaluate its density changes. The X-ray diffraction results showed that the powder sample was initially amorphous. By increasing the temperature, the components of this composite system reacted and Alpha-Al2O3 and Y3Al5O12 phases are formed. The crystallite size of the Theta-alumina phase grew with increasing temperatures up to 1000 C. At higher temperatures, crystallite size decreased due to the decomposition of theta-alumina. The density of the samples increased by increasing the temperature up to 1600 C so that the samples reached a relative density of about 96%. The densification curve of the composite showed three different stages during sintering. Examining the hardness of the samples showed that the hardness increases with the increase of the sintering temperature, and in the sample sintered at 1600 C for 3 hours, the Vickers hardness reached about 14 GPa.

Keywords

Alumina; Yttria; Composite; Sol-gel

References

[1] M. Alipour Sougavabar, S. A. Niknam, B.  Davoodi, “Study of tool flank wear and surface quality in milling of AL520-MMCs reinforced with sic and sn particles,”  Journal of Science and Technology of Composites, vol. 9, no. 2, pp. 1970-1975, 2022.

[2] Y. Chang, X. Yao, Y. Chen, D. Zou, “Review on ceramic-based composite phase change materials: preparation, characterization and application,”  Composites Part B: Engineering, vol. 254, pp. 110584, 2023.

[3] J. Singh, A. Chauhan, “Characterization of hybrid aluminum matrix composites for advanced applications–a review,”  Journal of Materials Research and Technology, vol. 5, no. 2, pp. 159-169, 2016.

[4] G. D. Zhan,  A. K. Mukherjee, “Carbon nanotube reinforced alumina-based ceramics with novel mechanical, electrical, and thermal properties,”  International Journal of Applied Ceramic Technology, vol. 1, no. 2, pp. 161-171, 2004.

[5] P. F. Becher, G. C. Wei, “Toughening behavior in sic-whisker-reinforced alumina,”  Journal of the American ceramic society, vol. 67, no. 12, pp. C‐267-C‐269, 1984.

[6] Y. Li, Kim, Y.-H. Koh, “Improving the surface hardness of zirconia toughened alumina (zta) composites by surface treatment with a boehmite sol,”  Ceramics International, vol. 38, no. 4, pp. 2889-2892, 2012.

[7] M. Beyhaghi, A. Kiani-Rashid, M. Kashefi, J.V. Khaki, S. Jonsson, “Investigation of in-situ synthesis and consolidation of NiAl–Al2O3 composites by reactive spark plasma sintering process using mechanically activated reaction,”  International Journal of Material Science Innovations, Vol. 2, No. 4, pp. 100-116, 2014.

[8] M. Beyhaghi, “investigation of influences of mechanical activation and heating rate on nanostructured NiAl-Al2O3 composites formation by combustion synthesis,”  Advanced Processes in Materials Engineering, vol. 11, no. 2, pp. 1-25, 2017.

[9] S. Ochiai, T. Ueda, K. Sato, M. Hojo, Y. Waku, N. Nakagawa, S. Sakata, A. Mitani,  T. Takahashi, “Deformation and fracture behavior of an Al2O3/YAG composite from room temperature to 2023 K,”  Composites Science and Technology, vol. 61, no. 14, pp. 2117-2128, 2001.

[10] H. Wang, and L. Gao, “Preparation and microstructure of polycrystalline Al2O3–YAG composites,”  Ceramics international, vol. 27, no. 6, pp. 721-723, 2001.

[11] B. Yao, H.Su, J. Zhang,  Q. Ren, W. Ma, L. Liu, H. Fu, , “Sintering densification and microstructure formation of bulk Al2O3/YAG eutectic ceramics by hot pressing based on fine eutectic structure,”  Materials & Design, vol. 92, pp. 213-222, 2016.

[12] D. Bučevac, M. Omerašević, A. Egelja, Ž. Radovanović, L.Kljajević, S. Nenadović, V.Krstić, “effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite,”  Ceramics International, vol. 46, no. 10, pp. 15998-16007, 2020.

[13] P. Palmero, G. Fantozzi, F. Lomello, G. Bonnefont, L.Montanaro, “creep behaviour of alumina/YAG composites prepared by different sintering routes,”  Ceramics International, vol. 38, no. 1, pp. 433-441, 2012.

[14] R. Pournajaf, S. A.Hassanzadeh-Tabrizi, “Polyacrylamide synthesis of nanostructured copper aluminate for photocatalytic application,” Journal of Advanced Materials and Processing, vol. 5, no. 4, pp. 12-19, 2018.

[15] M. Parashar V. K. Shukla, R. Singh, “metal oxides nanoparticles via sol–gel method: a review on synthesis, characterization and applications,”  Journal of Materials Science: Materials in Electronics, vol. 31, pp. 3729-3749, 2020.

[16] U. Holzwarth, N. Gibson, “The scherrer equation versus the'debye-scherrer equation,”  Nature nanotechnology, vol. 6, no. 9, pp. 534-534, 2011.

[17] M. Beyhaghi, M. Kashefi, A. Kiani-Rashid, J.V. Khaki, S. Jonsson, “In-situ synthesis of nanostructured NiAl-Al2O3 composite coatings on cast iron substrates by spark plasma sintering of mechanically activated powders,”  Surface and Coatings Technology, vol. 272, pp. 254-267, 2015.

[18] M. Beyhaghi, A. Kiani-Rashid, J.V. Khaki, M. Kashefi, S. Jonsson, “Influences of mechanical activation and heating rate on reaction processes in combustion synthesis of NiAl-Al2O3 composites,”  Powder Technology, vol. 346, pp. 347-247, 2019.

[19] D. Gouvêa, D. C. Rosário, L. B. Caliman, , “Surface and grain‐boundary excess of ZnO‐Doped SnO2 nanopowders by the selective lixiviation method,”  Journal of the American Ceramic Society, vol. 100, no. 9, pp. 4331-4340, 2017.

[20] D. L. Marchisio, F. Omegna, A. A. Barresi, P. Bowen, “effect of mixing and other operating parameters in sol− gel processes,”  Industrial & engineering chemistry research, vol. 47, no. 19, pp. 7202-7210, 2008.