Abstracts Book - IMRC 2018

• SB6-P084
SYNTHESIS AND CHARACTERIZATION OF TI-ZR ALLOYS WITH
ADDITIONS OF TA OR B FOR BONE IMPLANTS
Azalea Maldonado Pérez 1 , Ismailia Leilani Escalante Garcia 1 , Francisco Alvarado Hernández 2
1 Universidad Autónoma de Zacatecas, Unidad Academica de Ciencias Quimicas, Mexico.
2 Universidad Autónoma de Zacatecas, Unidad Académica de Ingenieria I, Mexico.
Titanium and its alloys with some metals such as zirconium, molibdenum, niobium,
tantalum are positioned as the best material for the manufacture of bone implants
and some other uses such as manufacture of dental implants and artificial heart
valves. Previously steels were used for these purposes but titanium is a better
material due to its low density and low elasticity modulus. In addition, when
titanium is alloyed with zirconium its corrosion resistance increases. It has been
reported that tantalum is an element that improves the biocompatibility of the
alloys and borum allows to decrease the grain size obtaining an improvement in the
mechanical properties for biomedical applications. In this work the mechanical
properties, the microstructure, morphology and corrosion resistance of the alloys
Ti-Zr with additions of tantalum or borum 1-5 at% were studied. The alloys were
prepared in an arc furnace in a high purity argon controlled atmosphere. The
samples were characterized by optical microscopy, microhardness, X-ray diffraction
and electrochemical techniques. The results show that both alloys, with additions
of tantalum or borum, exhibit a dendritic grown associated to the solidification
process. Furthermore, the hardness studies show that the hardness of the alloys
with tantalum decreases as the atomic percentage of tantalum increases; on the
other hand the hardness of the alloys with borum increases as the atomic
percentage of borum increases. According to the microhardness results, the alloys
with tantalum presumably seem to be a possible material to implant fabrication.
However this conclusion will be confirmed by X-ray diffraction and electrochemical
studies.
Acknowledgment: I appreciate the help of the machine and tools laboratory for
the synthesis and preparation of the alloys, the help of the metallography and
optical microscopy laboratory for the preparation and metalography of the
alloys. I would like to thank the electrochemical laboratory for the preparation
and characterization of the electrodes.
Keywords: Biomedical, Ti-Zr, Characterization
Presenting authors email: maldonado.azalea23@gmail.com