A comparative study on mechanical properties of porous titanium implant

Mohammad Khodaei, Mehdi Razavi


Background: Porous titanium scaffolds are promising candidates for bone reconstruction. In the load-bearing applications, predicting the mechanical properties of scaffolds are important.

Materials and methods: In this study, we developed a titanium scaffold with 55, 65 and 75% porosity using powder metallurgy technique, to investigate the effect of porosity on the mechanical properties of scaffold. The micro-structure of the scaffolds were studied using scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses. The plateau stress of titanium scaffolds was measured using compression test and compared to an analytical model.

Results and discussion: According to the SEM results, by increasing the porosity of scaffold from 55 to 75%, the thickness of struts became thinner. While results of XRD analysis did not indicate any impurity at fabricated scaffolds, the results of experimentally measured and analytically calculated plateau stress of titanium scaffolds, differ significantly, particularly at higher porosities (i.e. 75%).

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Cachinho, S. C. P., Correia, R. N., “Titanium Scaffolds for Osteointegration: Mechanical, In vitro and Corrosion Behaviour”, Journal of Material Science: Material in Medicine, Vol. 19, pp. 451–457, 2008.

Li Tian, Ning Tang, To Ngai, Chi Wu, Yechun Ruan, Le Huang, Ling Qin, Hybrid fracture fixation systems developed for orthopaedic applications: A general review, Journal of Orthopaedic Translation, DOI: https://doi.org/10.1016/j.jot.2018.06.006.

Pandit, A., Planell, J., Navarro, A. N., “Tiyanium and Nitinol (NiTi)”, Third Edit. Elsevier, 2008, pp. 120–124.

Wen, C. E., Yamada, Y., Shimojima, K., Chino, Y., Asahina, T., Mabuchi, M., “Processing and Mechanical Properties of Autogenous Titanium Implant Materials”, Journal of Material Science: Material in Medicine, Vol. 3, pp. 397–401, 2002.

Wu, J.M., Wang, M., Li, Y. W., Zhao, F. D., Ding, X. J., Osaka, A.,”Crystallization of Amorphous Titania Gel by Hot Water Aging and Induction of In vitro Apatite Formation by Crystallized Titania”, Surface & Coatings Technology, Vol. 201, pp. 755–761, 2006.

Zavanelli, R.A., Henriques, G.E.P.I., Ferreira, Rollo, J.M.D.D.A., “Corrosion-Fatigue Life of Commercially Pure Titanium and Ti-6Al-4V Alloys in Different Storage Environments,” The Journal of Prosthetic Dentistry, Vol. 84 (3), pp. 4–9, 2000.

Wieding, J., Wolf, A., Bader, R., “Numerical Optimization of Open-Porous Bone Scaffold Structures to Match the Elastic Properties of Human Cortical Bone,” Journal of Mechanical Behavior of Biomedical Material, Vol. 37, pp. 56–68, 2014.

Li, Y, Han, C, Zhu, X, Wen, C and Hodgson, P., “Osteoblast Cell Response to Nanoscale SiO2 / ZrO2 Particulate-Reinforced Titanium Composites and Scaffolds by Powder Metallurgy”, Journal of Materials Science, Vol. 47 (10), pp. 4410-4414.

Ping, J., Habibovic, P., Van Den Doel, M., Wilson, C. E., De Wijn, J. R., Van Blitterswijk, C. A., and De Groot, K., “Bone Ingrowth in Porous Titanium Implants Produced by 3D Fiber Deposition”, Biomaterials, Vol. 28, pp. 2810–2820, 2007.

Mangipudi K. R., Onck, P. R., “Notch Sensitivity of Ductile Metallic Foams: A Computational Study”, Acta Materialia, Vol. 59 (19), pp. 7356–7367, 2011.

ISO 13314: 2011E. Mechanical testing of metals. Ductility testing. Compression Test for Porous and Cellular metals, first ed., 2011, 12-15 .

Jung, H., Yook, S., Jang, T., Li, Y., Kim, H., Koh, Y., “Dynamic Freeze Casting for the Production of Porous Titanium (Ti) Scaffolds”, Materials Science and Engineering C, Vol. 33 (1), pp. 59–63, 2013.

Li, B. Q., Wang, C. Y., and Lu, X., “Effect of Pore Structure on the Compressive Property of Porous Ti Produced by Powder Metallurgy Technique”, Materials and Design, Vol. 50, pp. 613–619, 2013.

Sobieszczyk S., and Strength, M., “Optimal Features Of Porosity Of Ti Alloys Considering Their Bioactivity And Mechanical Properties”, Advances In Materials Science, Vol. 10 (2), 24-30, 2010.

Dezfuli, S. N., Sadrnezhaad, S. K., Shokrgozar, M. A., Bonakdar, S., “Fabrication of Biocompatible Titanium Scaffolds Using Space Holder Technique”, Journal of Material Science: Material in Medicine, VoL. 23, pp. 2483–2488, 2012.

Borisov, A. B., Novozhonov, V. I., Rubshtein, A. P., Vladimirov, A. B., Osipenko, A. V., Mukhachev, V. A., Makarova, E. B., “Mechanical Properties and the Structure of Porous Titanium Obtained by Sintering Compacted Titanium Sponge”, Strength and Plasticity, Vol. 105 (1), pp. 99–104, 2008.

Manonukul, A., Tange, m., Srikudvien, p., Denmud, n., Wattanapornphan, p., “Rheological Properties of Commercially Pure Titanium Slurry for Metallic Foam Production Using Replica Impregnation Method”, Powder Technology, Vol. 266, pp. 129–134, 2014.

Wenjuan, N. I. U., Chenguang, B. A. I., Guibao, Q. I. U., Qiang, W., Liangying, W. E. N., Dengfu, C., “Preparation and Characterization of Porous Titanium Using Space-Holder Technique”, Rare Metals, Vol. 28 (4), pp. 338–342, 2009.

Khodaei, M., Meratian, M.,Savabi, O., Razavi, M., “The effect of pore structure on the mechanical properties of titanium scaffolds”, Materials Letters, Vol. 171, PP. 308–311, 2016.


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