Properties of Porous Ti-35Nb-7Zr-5Ta Processed by the Spacer Method for Use in Biomedical Applications

Abstract:

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Ti-35Nb-7Zr-5Ta alloy is a promising new material for a bone graft substitute with good strength properties and an elastic modulus closer to that of bone than any other metallic material. TNZT samples until 50 vol % porosity were manufactured using ‘‘space holder’’ technique and sintering methods. Irregular ammonium carbonate powders were used as a space holder material. Complete removal carbonate from the green compact was achieved by heating at 200 °C for 5 hours and subsequent sintering at 1600 °C, with heating rate of 10 °C/min. For the alloy microstructural characterization, scanning electron microscopy was used. Density was measured by Archimedes method. The results show that the blended elemental P/M process and the space holder technique are efficient for the obtainment of highly porous samples. Foams with porosities in the range between 10% and 50% could be reached.

Info:

Periodical:

Materials Science Forum (Volumes 591-593)

Edited by:

Lucio Salgado and Francisco Ambrozio Filho

Pages:

224-229

DOI:

10.4028/www.scientific.net/MSF.591-593.224

Citation:

E. B. Taddei et al., "Properties of Porous Ti-35Nb-7Zr-5Ta Processed by the Spacer Method for Use in Biomedical Applications", Materials Science Forum, Vols. 591-593, pp. 224-229, 2008

Online since:

August 2008

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Price:

$35.00

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