High strength, low modulus and biocompatible porous Ti–Mo–Fe alloys

Bao, Yanping; Zhang, Mu; Liu, Yi; Yao, Jijuan; Xiu, Zhimeng; Xie, Minzhu; Sun, Xudong

doi:10.1007/s10934-014-9837-0

Cited by 19 publications

(11 citation statements)

References 34 publications

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“…It is known that increased porosity is beneficial for bone in-growth, however porosity results in a decrease in mechanical properties. Thus, a balance should be find between mechanical and biological performance [15,16]. There are several studies in the literature on microstructural characterization, mechanical properties, and biological response of the porous metallic implants [2,3,5,12,[17][18][19][20][21] but, there is a limited information on their electrochemical behaviour [22,23].…”

Section: Introductionmentioning

confidence: 99%

Corrosion behaviour of porous Ti intended for biomedical applications

et al. 2016

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Porous Ti implants are being developed in order to reduce the biomechanical mismatch between the implant and the bone, as well as increasing the osseointegration by improving the bone in-growth. Most of the focus in the literature has been on the structural, biological and mechanical characterization of porous Ti whereas there is limited information on the electrochemical characterization. Therefore, the present work aims to study the corrosion behaviour of porous Ti having 30 and 50 % of nominal porosity, produced by powder metallurgy route using the space holder technique. The percentage, size and distribution of the pores were determined by image analysis. Electrochemical tests consisting of potentiodynamic polarization and electrochemical impedance spectroscopy were performed in 9 g/L NaCl solution at body temperature. Electrochemical studies revealed that samples presented a less stable oxide film at increased porosity, more specifically, the complex geometry and the interconnectivity of the pores resulted in formation of less protective oxide film in the pores.

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Section: Introductionmentioning

confidence: 99%

Corrosion behaviour of porous Ti intended for biomedical applications

et al. 2016

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“…The compressive strength (500 -800 MPa) of porous Ti10Mo-(2 -5)Fe alloy is much larger than that (260 MPa) of porous Ti-10Mo alloy. Young's modulus of porous Ti10Mo-(2 -5) Fe alloy is less than 10 GPa [30].…”

Section: Mechanical Propertiesmentioning

confidence: 94%

“…As an alternative route, multi-element alloying can be used to enhance compressive strength while maintaining low Young's modulus of Ti-Mo based alloy [30,31]. The investigations demonstrate that the distinct strengthening effect of Fe and effective b-stabilizer of Mo could provide a good combination of adequate strength and ductility as well as relatively low Young's modulus in porous Ti10Mo-(2 -5)Fe alloys fabricated by powder metallurgy.…”

Section: Mechanical Propertiesmentioning

confidence: 98%

Current developments of biomedical porous Ti–Mo alloys

Wang

2017

International Journal of Materials Research

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Current developments of biomedical porous Ti-Mo alloysAs a biomedical hard tissue implant candidate, porous Ti-Mo alloy has received considerable attention because of its special porous structure, appropriate Young's modulus and compressive strength as well as good corrosion resistance. As a bioactive coating, hydroxyapatite is commonly used to cover the surface of bioinert metallic prostheses due to its excellent biocompatibility, bone-like structure and composition. This article reviews the current developments and the relationships between the fabrication methods, porous structure, mechanical properties, bioactive surface modification and corrosion behavior of porous Ti-Mo alloy used for hard tissue implant application. Furthermore, the future research directions are discussed to optimize the porous structure and improve the properties of porous Ti-Mo alloys.

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“…Iron, an inexpensive element, has a strong β-stabilizer effect and a good reinforcing effect on non-toxic and non-allergic titanium alloys [14]. In addition, it is reported to improve the sintering reaction of titanium alloys [15] because it represents a faster diffusion rate than the atom of titanium itself in the β phase as a rapidly diffused element [16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Molybdenum Content on Microstructure and Mechanical Properties of Ti-Mo-Fe Alloys by Powder Metallurgy

Hwang

Park²,

Lee

2022

Applied Sciences

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Titanium has many limitations in coverage and frequency of application due to its expensive alloying elements and complex manufacturing process. The biocompatible Ti-Mo-Fe ternary beta titanium alloys were designed by replacing high-cost beta-stabilizer elements (V, Nb, Zr, etc.) with low-cost Mo and Fe elements. In addition, it was attempted to obtain a low-cost, high-strength beta-titanium alloy with 800 MPa or more by applying the powder metallurgy process technology to the Ti-Mo-Fe alloy system. The added Mo element has the effect of reducing the elastic modulus of the titanium alloy without reducing its strength. In this study, Ti-Mo-Fe alloys designed with different Mo contents were fabricated using a powder metallurgy process and analyzed in connection with microstructural properties, phase changes, and mechanical properties. As Mo contents are increased, the α-lath thickness of Widmanstätten decreases and the size of prior β grain decreases. It was confirmed that the hardness and tensile strength were excellent and were compared with the ingot material of the same alloy system.

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High strength, low modulus and biocompatible porous Ti–Mo–Fe alloys

Cited by 19 publications

References 34 publications

Corrosion behaviour of porous Ti intended for biomedical applications

Corrosion behaviour of porous Ti intended for biomedical applications

Current developments of biomedical porous Ti–Mo alloys

Effect of Molybdenum Content on Microstructure and Mechanical Properties of Ti-Mo-Fe Alloys by Powder Metallurgy

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