Influence of the Compaction Pressure and Sintering Temperature on the Mechanical Properties of Porous Titanium for Biomedical Applications

Castillo, Sandra M.; Muñoz, Sergio; Trueba, Paloma; Díaz, Eduardo; Torres, Yadir

doi:10.3390/met9121249

Open AccessArticle

Influence of the Compaction Pressure and Sintering Temperature on the Mechanical Properties of Porous Titanium for Biomedical Applications

by

Sandra M. Castillo

,

Sergio Muñoz

^*

,

Paloma Trueba

,

Eduardo Díaz

and

Yadir Torres

Department of Engineering and Materials Science and Transportation, University of Seville, Av. Camino de los Descubrimientos s/n, 41092 Seville, Spain

^*

Author to whom correspondence should be addressed.

Metals 2019, 9(12), 1249; https://doi.org/10.3390/met9121249

Submission received: 16 October 2019 / Revised: 16 November 2019 / Accepted: 20 November 2019 / Published: 22 November 2019

(This article belongs to the Special Issue Recent Developments in Porous Metals and Metallic Foams)

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Abstract

In the present work, the use of porous titanium is proposed as a solution to the difference in stiffness between the implant and bone tissue, avoiding the bone resorption. Conventional powder metallurgical technique is an industrially established route for fabrication of this type of material. The results are discussed in terms of the influence of compaction pressure and sintering temperature on the porosity (volumetric fraction, size, and morphology) and the quality of the sintering necks. A very good agreement between the predicted values obtained using a simple 2D finite element model, the experimental uniaxial compression behavior, and the analytical model proposed by Nielsen, has been found for both the Young’s modulus and the yield strength. The porous samples obtained by the loose sintering technique and using temperatures between 1000 °C −1100 °C (about 40% of total porosity) are recommended for achieving a suitable biomechanical behavior for cortical bone partial replacement.

Keywords: finite element method; porous titanium; powder metallurgy; loose sintering

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MDPI and ACS Style

Castillo, S.M.; Muñoz, S.; Trueba, P.; Díaz, E.; Torres, Y. Influence of the Compaction Pressure and Sintering Temperature on the Mechanical Properties of Porous Titanium for Biomedical Applications. Metals 2019, 9, 1249. https://doi.org/10.3390/met9121249

AMA Style

Castillo SM, Muñoz S, Trueba P, Díaz E, Torres Y. Influence of the Compaction Pressure and Sintering Temperature on the Mechanical Properties of Porous Titanium for Biomedical Applications. Metals. 2019; 9(12):1249. https://doi.org/10.3390/met9121249

Chicago/Turabian Style

Castillo, Sandra M., Sergio Muñoz, Paloma Trueba, Eduardo Díaz, and Yadir Torres. 2019. "Influence of the Compaction Pressure and Sintering Temperature on the Mechanical Properties of Porous Titanium for Biomedical Applications" Metals 9, no. 12: 1249. https://doi.org/10.3390/met9121249

APA Style

Castillo, S. M., Muñoz, S., Trueba, P., Díaz, E., & Torres, Y. (2019). Influence of the Compaction Pressure and Sintering Temperature on the Mechanical Properties of Porous Titanium for Biomedical Applications. Metals, 9(12), 1249. https://doi.org/10.3390/met9121249

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Influence of the Compaction Pressure and Sintering Temperature on the Mechanical Properties of Porous Titanium for Biomedical Applications

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