تف‌جوشی پلاسمای جرقه‌ای پودر آلومینا-۱۵ درصد وزنی سریا تولید شده به روش سل- ژل

نوع مقاله : مقاله پژوهشی

نویسنده

مرکز تحقیقات مواد پیشرفته، دانشکده مهندسی مواد، واحد نجف‌آباد، دانشگاه آزاد اسلامی، نجف‌آباد، ایران.

چکیده

در تحقیق حاضر ذرات آلومینا- سریا به روش سل- ژل ساخته شد. ذرات تولیدی با روش‌های پراش پرتو ایکس و میکروسکوپ الکترونی روبشی مشخصه‌یابی شد. سپس کامپوزیت‌های زمینه آلومینا حاوی ۱۵ درصد وزنی سریا تحت فشار ۸۰ مگاپاسکال در دماهای مختلف توسط فرآیند تف‌جوشی پلاسمای جرقه‌ای ساخته شدند. نتایج پراش اشعه ایکس نشان داد که پودر تولیدی قبل از عملیات حرارتی ساختار آمورف دارد که پس از کلسیناسیون در دمای ۸۰۰ درجه سلسیوس فاز‌ میانی اتا آلومینا و اکسید سریم تشکیل می‌شوند. ذرات تولیدی ابعادی حدود ۲۵۰ نانومتر دارند. تأثیر دمای تف جوشی بر چگالی نمونه‌ها، اندازه دانه‌ها و سختی کامپوزیت‌ها مورد بررسی قرار گرفت. نمونه‌ها در دمای حدود 1400 درجه سلسیوس متراکم شدند و به چگالی حدود ۹۷ درصد چگالی تئوری رسیدند. تجزیه و تحلیل ریزساختار نشان داد که دانه‌های کامپوزیت با افزایش دمای کامپوزیت رشد کرده‌اند. نتایج نشان داد افزایش دما و فشار در فرایند تف‌جوشی باعث افزایش چگالی نمونه‌ها می‌شود. سختی ویکرز کامپوزیت‌ها با افزایش دمای تف جوشی افزایش یافت و نمونه‌های کامپوزیتی تف‌جوشی شده در ۱۴۰۰ درجه سلسیوس به‌مدت ۲۰ دقیقه در فشار ۸۰ مگاپاسکال دارای بالاترین سختی ویکرز حدود 15/3 گیگاپاسکال بود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Spark Plasma Sintering of Alumina- 15 wt.% Ceria Powder Prepared by Sol-Gel Method

نویسنده [English]

  • S.A. Hassanzadeh-Tabrizi
Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
چکیده [English]

In the present research, alumina-ceria particles were synthesized by a sol-gel method. The produced particles were characterized by X-ray diffraction and scanning electron microscopy. Then, alumina matrix composites containing 15 wt.% of ceria were densified under 80 MPa pressure at different temperatures by spark plasma sintering process. X-ray diffraction results showed that the powder produced before heat treatment has an amorphous structure, while alumina and ceria phases are formed after calcination at 800 °C. The produced particles have an average particle size of 250 nm. The effect of sintering temperature on the density of samples, grain size, and hardness of composites was investigated. The samples were densified at about 1400 °C, reaching a density of about 97% of the theoretical density. The microstructure analysis revealed that the composite grains have grown with increasing sintering temperature. The results declared that increasing the temperature and pressure in the sintering process enhances the density of the samples. The Vickers hardness of the composites increased with increasing sintering temperature, as the composite samples sintered at 1400 °C for 20 minutes at a pressure of 80 MPa had the highest Vickers hardness of about 15.3 GPa.

کلیدواژه‌ها [English]

  • Spark plasma sintering
  • Composite
  • Alumina
  • Ceria
  • Sol-gel

مراجع

  1. Krishnan SV, Ambalam MM, Venkatesan R, Mayandi J, Venkatachalapathy V. Technical review: improvement of mechanical properties and suitability towards armor applications–alumina composites. Ceramics International 2021;47(17):23693–23701. https://doi.org/10.1016/j.ceramint.2021.05.146
  2. Sktani ZDI, Arab A, Mohamed JJ, Ahmad ZA. Effects of additives additions and sintering techniques on the microstructure and mechanical properties of Zirconia Toughened Alumina (ZTA): A review. International Journal of Refractory Metals and Hard Materials 2022;105870. https://doi.org/10.1016/j.ijrmhm.2022.105870
  3. Sai Krishna Samudrala C, Krishna Sai Radhi P, Murthy BS. Metal, ceramics and polymer nano-composites for various applications: A review. Materials Today: Proceedings 2022;56:1120–1128. https://doi.org/10.1016/j.matpr.2021.10.316
  4. Meng F, Liu C, Zhang F, Tian Z, Huang W. Densification and mechanical properties of fine-grained Al2O3–ZrO2 composites consolidated by spark plasma sintering. Journal of Alloys and Compounds 2012;512(1):63–67. https://doi.org/10.1016/j.jallcom.2011.09.015
  5. Oguntuyi SD, Malatji N, Shongwe MB, Johnson OT, Khoathane C, Tshabalala L. The influence of Si3N4 on the microstructure, mechanical properties and the wear performance of TiB2–SiC synthesized via spark plasma sintering. International Journal of Lightweight Materials and Manufacture 2022;5(3):326–338. https://doi.org/10.1016/j.ijlmm.2022.04.004
  6. Ma J, Lim LC. Effect of particle size distribution on sintering of agglomerate-free submicron alumina powder compacts. Journal of the European Ceramic Society. 2002; 22(13):2197-2208. https://doi.org/10.1016/S0955-2219(02)00009-2
  7. Pournajaf R, Hassanzadeh-Tabrizi SA. Polyacrylamide synthesis of nanostructured copper aluminate for photocatalytic application. Journal of Advanced Materials and Processing 2018;5(4):12–19.
  8. Benrezgua E, Deghfel B, Abdelhalim Z, Basirun WJ, Amari R, Boukhari A, et al. Synthesis and properties of copper doped zinc oxide thin films by sol-gel, spin coating and dipping: A characterization review. Journal of Molecular Structure 2022;133639. https://doi.org/10.1016/j.molstruc.2022.133639
  9. Tanveer M, Nisa I, Nabi G, Hussain MK, Khalid S, Qadeer MA. Sol-gel extended hydrothermal pathway for novel Cd-Zn co-doped Mg-ferrite nano-structures and a systematic study of structural, optical and magnetic properties. Journal of Magnetism and Magnetic Materials 2022;553:169245. https://doi.org/10.1016/j.jmmm.2022.169245
  10. Wu JC-S, Chen C-H. A visible-light response vanadium-doped titania nanocatalyst by sol–gel method. Journal of Photochemistry and Photobiology A: Chemistry 2004;163(3):509–515. https://doi.org/10.1016/j.jphotochem.2004.02.007
  11. Farahmandjou M, Zarinkamar M. Synthesis of nano-sized ceria (CeO2) particles via a cerium hydroxy carbonate precursor and the effect of reaction temperature on particle morphology. Journal of Ultrafine Grained and Nanostructured Materials 2015;48(1):5–10.
  12. Zuo F, Meng F, Lin D-T, Yu J-J, Wang H-J, Xu S, et al. Influence of whisker-aspect-ratio on densification, microstructure and mechanical properties of Al2O3 whiskers-reinforced CeO2-stabilized ZrO2 composites. Journal of the European Ceramic Society 2018;38(4):1796–1801. https://doi.org/10.1016/j.jeurceramsoc.2017.11.037
  13. Abbasi Z, Haghighi M, Fatehifar E, Saedy S. Synthesis and physicochemical characterizations of nanostructured Pt/Al2O3–CeO2 catalysts for total oxidation of VOCs. Journal of Hazardous Materials 2011;186(2–3):1445–1454. https://doi.org/10.1016/j.jhazmat.2010.12.034
  14. Pitkäaho S, Nevanperä T, Matejova L, Ojala S, Keiski RL. Oxidation of dichloromethane over Pt, Pd, Rh, and V2O5 catalysts supported on Al2O3, Al2O3–TiO2 and Al2O3–CeO2. Applied Catalysis B: Environmental 2013;138:33–42. https://doi.org/ 10.1016/j.apcatb.2013.01.058
  15. Cao X, Qin J, Gou G, Li J, Wu W, Luo S, et al. Continuous solvent-free synthesis of imines over uip-γ-Al2O3-CeO2 catalyst in a fixed bed reactor. Applied Catalysis B: Environmental 2020;272:118958. https://doi.org/10.1016/j.apcatb.2020.118958
  16. Li F, Zhao B, Tan Y, Chen W, Tian M. Preparation of Al2O3–CeO2 by Hydrothermal Method Supporting Copper Oxide for the Catalytic Oxidation of CO and C3H8. Industrial & Engineering Chemistry Research 2022;61(14):4739–4751. https://doi.org/10.1021/acs.iecr.1c03906
  17. Janani FZ, Khiar H, Taoufik N, Elhalil A, Sadiq M, Puga A V, et al. ZnO–Al2O3–CeO2–Ce2O3 mixed metal oxides as a promising photocatalyst for methyl orange photocatalytic degradation. Materials Today Chemistry 2021;21:100495. https://doi.org/10.1016/j.mtchem.2021.100495
  18. Hassanzadeh- Tabrizi SA, Taheri‐Nassaj E. The compaction, sintering, and mechanical properties of Al2O3–CeO2 composite nanopowders. Journal of the American Ceramic Society 2011;94(10):3488–3493. https://doi.org/10.1111/j.1551-2916.2011.04638.x
  19. Wu C, Wang Z, Li Q, Shi G, Liu M, Li Y. Mechanical properties and microstructure evolution of Ti/Al2O3 cermet composite with CeO2 addition. Journal of Alloys and Compounds 2014;617:729–733. https://doi.org/10.1016/j.jallcom.2014.08.007
  20. Yu W, Zhang E, Yu Y, Li X, Liu X, Yuan Y, et al. Effects of CeO2 on the phase, microstructure and mechanical properties of Al2O3-ZrO2 (CeO2) nanocomposite ceramics (AZC-NCs) by solid solution precipitation. Ceramics International 2022;48(23):34454–34464. https://doi.org/10.1016/j.ceramint.2022.08.025
  21. Fatimah S, Ragadhita R, Al Husaeni DF, Nandiyanto ABD. How to calculate crystallite size from x-ray diffraction (XRD) using Scherrer method. ASEAN Journal of Science and Engineering 2022;2(1):65–76.
  22. Cheng Q, Wang Y, Zhang J, Conejo AN, Liu Z. The grain growth and grain boundary migrations during solid-phase sintering of Fe2O3: Experiments and simulations. Chemical Engineering Science 2022;262:118038. https://doi.org/10.1016/j.ces.2022.118038
  23. Kim D-S, Lee J-H, Sung RJ, Kim SW, Kim HS, Park JS. Improvement of translucency in Al2O3 ceramics by two-step sintering technique. Journal of the European Ceramic Society 2007;27(13–15): 3629–3632. https://doi.org/10.1016/j.jeurceramsoc.2007.02.002
  24. Du R, Fu L, Gu H, Huang A, Yang S, Chen D. Effect of zirconia sol on the microstructure and properties of Al2O3-based ceramic fabricated from natural bauxite. Ceramics International 2022;48(9):12954–12961. https://doi.org/10.1016/j.ceramint.2022.01.168
  25. Cunha A, Marques A, Gasik M, Trindade B. Influence of temperature processing on the microstructure and hardness of the 420 stainless steel produced by hot pressing. Materials and Manufacturing Processes 2023;38(3):333–340. https://doi.org/10.1080/10426914.2022.2072885
  26. Ahmed M, Obeidi MA, Yin S, Lupoi R. Influence of processing parameters on density, surface morphologies and hardness of as-built Ti-5Al-5Mo-5V-3Cr alloy manufactured by selective laser melting. Journal of Alloys and Compounds 2022;910:164760. https://doi.org/10.1016/j.jallcom. 2022.164760
مواد پیشرفته در مهندسی
دوره 41، شماره 4
اسفند 1401
صفحه 27-36

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