Abstract
Porous Ti–4Mo alloy was prepared by indirect selective laser sintering and investigated with focuses on its porous structure, microstructural characteristic, mechanical properties and corrosion behavior. The results indicate that as the porous alloy is sintered from 1000 to 1200 °C, the pore morphology changes gradually from interconnected to closed pores, meanwhile the porosity level and pore size reduce in the ranges 54–20 % and 103–35 μm, respectively. A laminar microstructure composed of dominant α and minor β phases is observed in pore walls together with slight α precipitations. Elastic modulus and yield strength increase with decreased porosity in the ranges 2.56–10.8 GPa and 47.0–162.4 MPa, respectively. The relationship between the relative mechanical properties and relative density obeys a power law relation. All the polarization curves exhibit an obvious passive characteristic despite different pore features, and the passive film could protect the porous alloy against corrosion in simulated body fluids. Overall, the porous Ti–4Mo alloy may be a potential candidate material for biomedical implants.
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This work was supported by the National Natural Science Foundation of China (51501073, 51375209), Jiangsu Provincial Natural Science Foundation of China (BK20140162), and the Fundamental Research Funds for the Central Universities (JUSRP11455).
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Xie, F., He, X., Yu, J. et al. Fabrication and characterization of porous Ti–4Mo alloy for biomedical applications. J Porous Mater 23, 783–790 (2016). https://doi.org/10.1007/s10934-016-0133-z
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DOI: https://doi.org/10.1007/s10934-016-0133-z