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Design and Characterization of New Ti-Ag and Ti-Ag-Sn Alloys for Cranio-Maxillo-Facial Prostheses Made by Three-Dimensional Printing

Published online by Cambridge University Press:  15 March 2011

Sang-Bum Hong ,
Noam Eliaz ,
Gary G. Leisk ,
Emanuel M. Sachs ,
Ronald M. Latanision  and
Samuel M. Allen
Sang-Bum Hong
Affiliation:
Harvard School of Dental Medicine, Boston, MA 02115-5888, U.S.A. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, U.S.A.
Noam Eliaz
Affiliation:
H.H. Uhlig Corrosion Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, U.S.A.
Gary G. Leisk
Affiliation:
H.H. Uhlig Corrosion Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, U.S.A.
Emanuel M. Sachs
Affiliation:
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, U.S.A.
Ronald M. Latanision
Affiliation:
H.H. Uhlig Corrosion Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, U.S.A.
Samuel M. Allen
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, U.S.A.
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Abstract

new Ti-5Ag and Ti-5Ag-35Sn (wt.%) alloys were designed and synthesized by threedimensionalprinting (3DP). The identification of an appropriate binder, densificationtechnique, and densification parameters for fabricating cranio-maxillo-facial prostheses wasundertaken using microscopic observations, x-ray diffraction tests, microhardness testing, linearshrinkage and wettability measurements. Moreover, electrochemical tests and surface analysiswere used to evaluate the corrosion resistance and passivation behavior of the materials ofinterest. Silver nitrate was found to be an appropriate inorganic reactive binder for atomizedtitanium powder. The optimal temperature for densification of as-printed parts using sinteringwas determined for Ti-Ag alloys. In addition, the type of infiltrant material and use ofhomogenization in liquid-Sn infiltration was explored for Ti-Ag-Sn alloys. While the Ti-Agalloy exhibited superior corrosion and mechanical behavior to the Ti-Ag-Sn alloy, the lattershowed better dimensional stability.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 662: Symposia LL/MM/NN/OO – Biomaterials for Drug Delivery & Tissue Engineering , 2000 , LL2.2
Copyright
Copyright © Materials Research Society 2001

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References

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