Electrochemical behavior of new experimental TiNbZrAl alloys for dental applications

Dragan-Raileanu, L. A.; Chelariu, R.; Mareci, Daniel; Munteanu, Corneliu

doi:10.1002/maco.201307126

Cited by 5 publications

(5 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, in order to obtain quantitative information about the EIS data, the equivalent circuit model was employed. Considering all the Nyquist plots are characterized by a semicircle and the phase angle shows only one “peak” over the whole frequency range in the Bode plots for all samples, which is a typical nature of the single film on the surface of the alloys, an equivalent circuit model (R s (Q p R P )), widely used for the fit of a single film on the surface of titanium alloys is adopted , as illustrated in Fig. .…”

Section: Resultsmentioning

confidence: 99%

Influence of Nb addition on the corrosion behavior of a Ti₆₀Zr₁₀Si₁₅Ta₁₅ alloy in PBS solution

Lin

2015

Materials & Corrosion

View full text Add to dashboard Cite

The Ti60 Zr10Si15Ta15‐xNbx (x = 0, 3, 7, 11 at.%) alloys were casted by an arc melting method, and the Ti60Zr10Si15Ta15 ribbon was prepared by the single roll melt‐spinning method. The identifications of the microstructure of the Ti alloys were carried out by X‐ray diffraction (XRD) instruments. The effects of the Nb addition on the corrosion behavior of the Ti60 Zr10Si15Ta15‐xNbx (x = 0, 3, 7, 11 at.%) alloys in phosphate buffer solution (PBS) were investigated using electrochemical polarization and electrochemical impedance spectroscopy (EIS) tests. It was found that the microstructure of the as‐cast Ti60 Zr10Si15Ta15‐xNbx (x = 0, 3, 7, 11 at.%) alloys mainly contained β phase, and the as‐spun Ti60 Zr10Si15Ta15 ribbon shows amorphous structure. The crystalline Ti60 Zr10Si15Ta15‐xNbx (x = 0, 3, 7, 11 at.%) alloys and amorphous ribbon all exhibited the passivation characterization with the formation of a stable passive film on their surfaces during the immersion in PBS solution. For the Ti60Zr10Si15Ta15‐xNbx (x = 0, 3, 7, 11 at.%) alloys, the addition of Nb decreased the passive current density, thus the corrosion resistance increased with the Nb content increasing from 0 to 11 at.%. But the as‐spun amorphous Ti60Zr10Si15Ta15 ribbon exhibited the lowest passive current density, which indicated the better corrosion resistance in comparison with the as‐cast Ti60Zr10Si15Ta15‐xNbx (x = 0, 3, 7, 11 at.%) alloys.

show abstract

Section: Resultsmentioning

confidence: 99%

Influence of Nb addition on the corrosion behavior of a Ti₆₀Zr₁₀Si₁₅Ta₁₅ alloy in PBS solution

Lin

2015

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…The impedance spectra were displayed as Nyquist and Bode (impedance modulus and phase angle vs . frequency) diagrams .…”

Section: Methodsmentioning

confidence: 99%

Long-term corrosion behavior and biocompatibility testing of titanium-based alloy covered with nano-crystalline hydroxyapatite

Popa

Vasilescu

Drob

et al. 2014

Materials and Corrosion

View full text Add to dashboard Cite

In this paper, we applied on the surface of the new Ti-20Nb-10Zr-5Ta alloy nano-crystalline hydroxyapatite (HA) coating by the method of the chemical deposition in a solution supersaturated with Ca 2þ and PO 3À 4 ions. The composition and crystallinity of the obtained coating was determined by X-ray diffraction, micro-Raman, infrared, and energy dispersive X-ray spectroscopies and its morphology and porosity by scanning electron microscopy. The coating long-term corrosion behavior for 3000 soaking hours in simulated human fluids (Ringer's solutions of different pH values) was studied by cyclic potentiodynamic and linear polarization, electrochemical impedance spectroscopy and monitoring of the open circuit potentials and corresponding open circuit potential gradient due to the pH non-uniformity of the biofluid. Also, the coating biocompatibility was performed by cells (human osteoblast -HOS and human immortalized pulmonary fibroblast -Wi-38) adhesion and proliferation testing in the HA coated bioalloy extract compared to respective effects of the uncoated bioalloy extract. The initial HA nano-coating promoted the deposition of new HA layers, thickening itself and showing its ability to induce the formation of this main inorganic component of the human bone, therefore denoting bioactivity of the HA nano-coated alloy.

show abstract

“…Moreover, good cell adhesion is greatly attributed to the presence of a 2-nm thick layer of amorphous Nb 2 O 5 on them. In addition, they also found that the Ti-19.1Nb-8.8Zr (wt.%) SMA exhibit higher corrosion resistance than NiTi SMAs [ 193 ], and even compared with pure Ti [ 232 ]. Bai et al further compared in vivo bone tissue biocompatibility of Ti-Nb alloys with pure Ti, the results indicated that Ti-Nb alloys had a comparable osteocompatibility to pure Ti while using micro-CT and histological evaluations, as shown in Figure 33 [ 231 ].…”

Section: Porous Ni-free Shape Memory Alloysmentioning

confidence: 99%

“…By controlling pore forming agent, the larger pore size of 800–1000 μm and high open porosity can be obtained by vacuum sintering from alloy powders, as shown in Figure 35 d. Xu et al fabricated porous Ti-25 wt.% Nb alloys with porosity even reaching 70% by sintering using polyurethane as space-holder, as shown in Figure 36 [ 243 ]. In addition, the pores shape of porous Ni-free SMAs is mainly determined by the particle shape of the pore-forming agent and it can be easily adjusted [ 232 ].…”

Section: Porous Ni-free Shape Memory Alloysmentioning

confidence: 99%

Biomedical Porous Shape Memory Alloys for Hard-Tissue Replacement Materials

2018

View full text Add to dashboard Cite

Porous shape memory alloys (SMAs), including NiTi and Ni-free Ti-based alloys, are unusual materials for hard-tissue replacements because of their unique superelasticity (SE), good biocompatibility, and low elastic modulus. However, the Ni ion releasing for porous NiTi SMAs in physiological conditions and relatively low SE for porous Ni-free SMAs have delayed their clinic applications as implantable materials. The present article reviews recent research progresses on porous NiTi and Ni-free SMAs for hard-tissue replacements, focusing on two specific topics: (i) synthesis of porous SMAs with optimal porous structure, microstructure, mechanical, and biological properties; and, (ii) surface modifications that are designed to create bio-inert or bio-active surfaces with low Ni releasing and high biocompatibility for porous NiTi SMAs. With the advances of preparation technique, the porous SMAs can be tailored to satisfied porous structure with porosity ranging from 30% to 85% and different pore sizes. In addition, they can exhibit an elastic modulus of 0.4–15 GPa and SE of more than 2.5%, as well as good cell and tissue biocompatibility. As a result, porous SMAs had already been used in maxillofacial repairing, teeth root replacement, and cervical and lumbar vertebral implantation. Based on current research progresses, possible future directions are discussed for “property-pore structure” relationship and surface modification investigations, which could lead to optimized porous biomedical SMAs. We believe that porous SMAs with optimal porous structure and a bioactive surface layer are the most competitive candidate for short-term and long-term hard-tissue replacement materials.

show abstract

Electrochemical behavior of new experimental TiNbZrAl alloys for dental applications

Cited by 5 publications

References 63 publications

Influence of Nb addition on the corrosion behavior of a Ti₆₀Zr₁₀Si₁₅Ta₁₅ alloy in PBS solution

Influence of Nb addition on the corrosion behavior of a Ti₆₀Zr₁₀Si₁₅Ta₁₅ alloy in PBS solution

Long-term corrosion behavior and biocompatibility testing of titanium-based alloy covered with nano-crystalline hydroxyapatite

Biomedical Porous Shape Memory Alloys for Hard-Tissue Replacement Materials

Contact Info

Product

Resources

About

Electrochemical behavior of new experimental TiNbZrAl alloys for dental applications

Cited by 5 publications

References 63 publications

Influence of Nb addition on the corrosion behavior of a Ti60Zr10Si15Ta15 alloy in PBS solution

Influence of Nb addition on the corrosion behavior of a Ti60Zr10Si15Ta15 alloy in PBS solution

Long-term corrosion behavior and biocompatibility testing of titanium-based alloy covered with nano-crystalline hydroxyapatite

Biomedical Porous Shape Memory Alloys for Hard-Tissue Replacement Materials

Contact Info

Product

Resources

About

Influence of Nb addition on the corrosion behavior of a Ti₆₀Zr₁₀Si₁₅Ta₁₅ alloy in PBS solution

Influence of Nb addition on the corrosion behavior of a Ti₆₀Zr₁₀Si₁₅Ta₁₅ alloy in PBS solution