The Effect of Pressure and Pore-Forming Agent on the Mechanical Properties of Porous Titanium

Abstract:

Porous titanium compacts were fabricated by powder metallurgy using cold isostatic press with and without pore forming agents. Their microstructure and mechanical properties were investigated in this study. These alloy powders were sintered under 1300°C in vacuum of 10-3 Pa for 2h, followed by furnace cooling. Young’s modulus of sintered Ti could equal that of human’s dense bones. It was found that the strength of porous Ti enhanced by increasing the pressure or decreasing the amounts of pore forming agents. We prepared a porous pure Ti with 30wt.% NH4HCO3 as pore forming agents whose modulus was near to the human cortical bone, as compared in the range from 10 to 30GPa of Young’s modulus for human bone.

• Periodical: Advanced Materials Research (Volumes 217-218)
• Pages: 1191-1196
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.217-218.1191
• Online since: March 2011
• Authors: Peng Zhang, Yuan Chen Qi, Wei Li
• Keywords: Density, Elastic Modulus, Porosity, Powder metallurgy, Tensile Strength

References

[1] N. Nomura, T. Kohama, I.H. Oh, S. Hanada, A. Chiba, M. Kanehira, K. Sasaki. Materials Science and Engineering C, 2005, 25, 330–335.

DOI: 10.1016/j.msec.2005.04.001

[2] A. Nouri, P.D. Hodgson, C.E. Wen. Acta Biomaterialia, 2010, 6, 1630–1639.

[3] M. Takemoto, S. Fujibayashi, M. Neo, J. Suzuki, T. Kokubo, T. Nakamura. Biomaterials, 2005, 26, 6014–6023.

DOI: 10.1016/j.biomaterials.2005.03.019

[4] K. Jafarzadeh, Z. Vale, B. Ghavidel. Surface&Coatings Technology, 2010, 205, 1850–1855.

[5] M. Niinomi. Science and Technology of Advanced Materials, 2003, 4(5), 445-454.

[6] H. Matsuno, A. Yokoyama, F. Watari, T. Kawasaki . Biomaterials, 2001, 22(11), 1253-1262.

[7] P. Majumdar, S. B. Singh, M. Chakraborty. Materials Science and Engineering: A, 2008, 489(1-2), 419-425.

[8] Y. Li, Z. M. Guo, J. J. Hao, S. M. Ren. Rare Metals, 2008, 27(3), 282-286.