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Journals / International Journal of Advances in Engineering and Pure Sciences / 2019 / Cilt: 31 - Sayı: 4

Hydroxyapatite/cerium oxide composites: Sintering, microstructural, mechanical and invitro bioactivity properties

Hidroksiapatit / seryum oksit kompozitleri: Sinterleme, mikroyapısal, mekanik ve invitro biyoaktivite özellikleri

Süleyman Serdar PAZARLIOĞLU
Pages
295–304
Publication Date
2019-11-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In-vitro bioactivity test results showed that apatite layers on the surface of the samples were in the different morphologies.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Effect of cerium oxide (CeO2) additive on the microstructure, mechanical and invitro bioactivity properties of a commercially synthetic hydroxyapatite (HA) was investigated.
📊
Key Findings & Data:HA without CeO2 started to decompose at 1100 oC, but the decomposition temperature of the CeO2 added samples decreased up to 900 oC.
💡
Conclusion & Impact:In-vitro bioactivity test results showed that apatite layers on the surface of the samples were in the different morphologies.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Hidroksiapatit · Sinterleme · Seryum

Abstract

Effect of cerium oxide (CeO2) additive on the microstructure, mechanical and invitro bioactivity properties of a commercially synthetic hydroxyapatite (HA) was investigated. HA without CeO2 started to decompose at 1100 oC, but the decomposition temperature of the CeO2 added samples decreased up to 900 oC. Decomposition rate of the sintered samples increased as the sintering temperature reached to 1300 oC. It was about 5.8% for monolithic HA, and increased to 11.4% when the CeO2 additive to HA reached to 2.5 wt%. SEM images showed that an excessive grain growth as well as microcracks occured on the surface of monolithic HA when it was sintered at the temperatures than that of 1100 oC. The microcracks were also observed on the surface of HA-CeO2 composites, when they were sintered at 1300 oC. The composite of HA-0.5CeO2 sintered at 1100 oC possess the higher fracture toughness (Kıc) (2.510 ± 0.225 MPam1/2) and the higher compressive strength (152.73 ± 6.31 MPa) compared to other HA-CeO2 composites, and it's mechanical properties are higher than that of monolithic HA at about 2-3 times. In-vitro bioactivity test results showed that apatite layers on the surface of the samples were in the different morphologies.

Özet

Effect of cerium oxide (CeO2) additive on the microstructure, mechanical and invitro bioactivity properties of a commercially synthetic hydroxyapatite (HA) was investigated. HA without CeO2 started to decompose at 1100 oC, but the decomposition temperature of the CeO2 added samples decreased up to 900 oC. Decomposition rate of the sintered samples increased as the sintering temperature reached to 1300 oC. It was about 5.8% for monolithic HA, and increased to 11.4% when the CeO2 additive to HA reached to 2.5 wt%. SEM images showed that an excessive grain growth as well as microcracks occured on the surface of monolithic HA when it was sintered at the temperatures than that of 1100 oC. The microcracks were also observed on the surface of HA-CeO2 composites, when they were sintered at 1300 oC. The composite of HA-0.5CeO2 sintered at 1100 oC possess the higher fracture toughness (Kıc) (2.510 ± 0.225 MPam1/2) and the higher compressive strength (152.73 ± 6.31 MPa) compared to other HA-CeO2 composites, and it's mechanical properties are higher than that of monolithic HA at about 2-3 times. In-vitro bioactivity test results showed that apatite layers on the surface of the samples were in the different morphologies.

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Cite This Article

PAZARLIOĞLU, S. S. (2019). Hydroxyapatite/cerium oxide composites: Sintering, microstructural, mechanical and invitro bioactivity properties. International Journal of Advances in Engineering and Pure Sciences, Cilt: 31 - Sayı: 4, 295–304. https://ajindex.com/articles/257765

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References (11)

  1. Youness, R.A., Taha, M.A., Ibrahim, M.A. (2017). Effect of sintering temperatures on the in vitro bioactivity, molecular structure and mechanical properties of titanium/carbonated hydroxyapatite nanobiocomposites. J. Mol. Struct. 1150, 188-195
  2. Khanal, S.P., Mahfuz, H., Rondinone, A.J., Leventouri, Th. (2016). Improvement of the fracture toughness of hydroxyapatite (HAp) by incorporation of carboxyl functionalized single walled carbon nanotubes (CfSWCNTs) and nylon. Mater. Sci. Eng., C 60, 204-210
  3. Yetmez, M., Erkmen, Z.E., Kalkandelen, C., Ficai, A., Oktar, F.N. (2017). Sintering effects of mullite-doping on mechanical properties of bovine hydroxyapatite. Mater. Sci. Eng., C 77, 470-475
  4. Castkova, K., Hadraba, H., Matousek, A., Roupcova, P., Chlup, Z., Novotna, L., Cihlar, J. (2016). Synthesis of Ca,Y-zirconia/hydroxyapatite nanoparticles and composites. J. Eur. Ceram. Soc. 36, 2903-2912
  5. Brzezińska-Miecznik, J., Haberko, K., Sitarz, M., Bućko, M.M., Macherzyńska, B., Lach, R. (2016). Natural and synthetic hydroxyapatite/zirconia composites: A comparative study. Ceram. Int. 42, 11126-11135
  6. Evis, Z., Doremus, R.H. (2008). Effect of AlF3, CaF2 and MgF2 on hot-pressed hydroxyapatite-nanophase alpha-alumina composites. Mater. Res. Bull. 43, 2643-2651 [7] Kutbay, I., Yilmaz, B., Evis, Z., Usta, M. (2014). Effect of calcium fluoride on mechanical behavior and sinterability of nano-hydroxyapatite and titania composites. Ceram. Int. 40, 14817-14826
  7. Zhou, Y., Rahaman, M.N. (1997). Effect of redox reaction on the sintering behavior of cerium oxide. Acta Mater. 45(9), 3635-3639
  8. Wang, X., Deng, L.L., Wang, L.Y., Dai, S.M., Xing, Z., Zhan, X.X., Lu, X.Z., Xie, S.Y., Huang, R.B., Zheng, L.S. (2017). Cerium oxide standing out as an electron transport layer for efficient and stable perovskite solar cells processed at low temperature. J. Mater. Chem. A 5, 1706-1712
  9. Nakane, S., Tachi, T., Yoshinaka, M., Hirota, K., Yamaguchi, O. (1997). Characterization and sintering of reactive cerium(IV) oxide powders prepared by the hydrazine method. J. Am. Ceram. Soc. 80(12), 3221-3224
  10. Yan, B., Zhang, Y., Chen, G., Shan, R., Ma, W., Liu, C. (2016). The utilization of hydroxyapatite-supported CaO-CeO2 catalyst for biodiesel production. Energ. Conver. Manage. 130, 156-164
  11. Patil, S., Sandberg, A., Heckert, E., Self, W., Seal, S. (2007). Protein adsorption and cellular uptake of cerium oxide nanoparticles as a function of zeta potentia