Surface characterization of Ti–7.5Mo alloy modified by biomimetic method

Escada, Ana Lúcia do Amaral; Rodrigues, Durval; Machado, João Paulo Barros; Claro, Ana Paula Rosifini Alves

doi:10.1016/j.surfcoat.2010.06.067

Cited by 21 publications

(17 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to the results of SEM, XRD and EDS, it can be concluded that the hydrothermally treated porous Ti15Mo alloy possesses high apatite-forming ability in vitro, the apatite begins to deposit after immersed in SBF for 3 d and fully covers the inner and outer surface of the porous Ti-15Mo alloy as the immersion time increased to 14 d. On the other hand, the untreated porous Ti-15Mo alloy has no apatite-forming ability and it cannot induce the apatite deposition on the sample even immersed in the SBF solution for 14 d. This result is well consistent with the previous reports [21,38], in which the porous Ti-7.5Mo alloy or as-cast Ti-7.5Mo alloy did not induce apatite deposition even after immersed in SBF for 28 d. The apatite-forming mechanism of the hydrothermally treated porous Ti-15Mo alloy is similar with the other NaOH treated Ti alloys [10,11,21,38,39]. The sodium titanate (Na 2 Ti 6 O 13 ) layers are formed on the inner and outer surface of the porous Ti-15Mo alloy after hydrothermal treatment.…”

Section: Mechanical Properties Of the Porous Ti-15mo Alloyssupporting

confidence: 91%

“…So far, several surface modification methods have been employed to activate the Ti-Mo alloys, such as thermal oxidation [18], plasma electrolytic oxidation [34,35], anodic oxidation [36,37] and alkaliheat treatment [10,11,21,38,39]. Among these processes, the alkali-heat treatment proposed by Kokubo's team [40] is a cost-effective and efficient way to induce apatite layer formation on the Ti-based alloys substrate.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Preparation and bioactive surface modification of the microwave sintered porous Ti-15Mo alloys for biomedical application

Zhang

Bao

et al. 2017

Sci. China Mater.

View full text Add to dashboard Cite

Biomedical porous Ti-15Mo alloys were prepared by microwave sintering using ammonium hydrogen carbonate (NH 4 HCO 3 ) as the space holder agent to adjust the porosity and mechanical properties. The porous Ti-15Mo alloys are dominated by β-Ti phase with a little α-Ti phase, and the proportion of α and β phase has no significant difference as the NH 4 HCO 3 content increases. The porosities and the average pore sizes of the porous Ti-15Mo alloys increase with increase of the contents of NH 4 HCO 3 , while all of the compressive strength, elastic modulus and bending strength decrease. However, the compressive strength, bending strength and the elastic modulus are higher or close to those of natural bone. The surface of the porous Ti-15Mo alloy was further modified by hydrothermal treatment, after which Na 2 Ti 6 O 13 layers with needle and flake-like clusters were formed on the outer and inner surface of the porous Ti-15Mo alloy. The hydrothermally treated porous Ti-15Mo alloy is completely covered by the Ca-deficient apatite layers after immersed in SBF solution for 14 d, indicating that it possesses high apatiteforming ability and bioactivity. These results demonstrate that the hydrothermally treated microwave sintered porous Ti15Mo alloys could be a promising candidate as the bone implant.

show abstract

Section: Mechanical Properties Of the Porous Ti-15mo Alloyssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Preparation and bioactive surface modification of the microwave sintered porous Ti-15Mo alloys for biomedical application

Zhang

Bao

et al. 2017

Sci. China Mater.

View full text Add to dashboard Cite

show abstract

“…Titanium based alloys with different compositions such as Ti-7.5Mo 3,4 , Ti-10Mo 5,6 , Ti-15Mo 7 , Ti-29Nb-13Ta-4.6Zr 8 and Ti-13Nb-13Zr 9 have been studied for biomedical applications. Lin et al 8,9 developed a binary alloy, Ti-7.5Mo, with a low elastic modulus and a high strength/modulus ratio.…”

Section: Introductionmentioning

confidence: 99%

Influence of Anodization Parameters in the TiO2 Nanotubes Formation on Ti-7.5Mo Alloy Surface for Biomedical Application

2017

View full text Add to dashboard Cite

In this study, the effects of the parameters such as applied potential difference, time and annealing temperature in the titania nanotubes formation were evaluated. The morphology of the nanotubes was evaluted by using Field Emission Gun -Scanning Electron Microscope (FEG-SEM), Atomic Force Microscope (AFM), contact angle and X-rays diffraction (XRD). Self-organized nano-structures were formed on the Ti-7.5Mo alloy surface from the same electrolyte (glycerol/NH4F) for all conditions. It was observed that the potential influenced the diameter while the length was changed according to the anodization time lenght. The presence of the phases anatase and rutile was altered by annealing temperature. Results showed that 20V-48h-450 ºC was the better than other conditions for application as biomaterial.

show abstract

“…In addition to the various types of reagents, it had also been proposed different pHs due to improvements on Ca and P precipitation process. All procedures were performed in two dimensional surfaces using, in most cases, Ti alloys 13 . VAMWCNT-O 2 can be considered candidate to SBF biomineralization process too due to the presence of calcium carbonate 7 .…”

Section: Resultsmentioning

confidence: 99%

In vitro biomineralization of a novel hydroxyapatite/superhydrophilic multiwalled carbon nanotube nanocomposite using simulated body fluids

et al. 2013

View full text Add to dashboard Cite

Nanobiomaterials based on superhydrophilic vertically-aligned multi-walled carbon nanotubes (VAMWCNT-O 2 ) are promising for their properties and bone tissue biocompatibility. VAMWCNT-O 2 films with nanohydroxyapatite (nHAp) aim to improve mechanical properties and biocompatibility of this new nanocomposite due to its resemblance to bone matrix structure. This study aimed to produce in vitro biomineralized nHAp/VAMWCNT-O 2 nanocomposites using simulated body fluid (SBF) with two different pHs (6.10 and 7.40) during 7 days to obtain a new surface design with higher crystalinity and better morphology of nHAp/VAMWCANT-O 2 nanocomposites. The objective is to obtain biomineralized nanobiomaterials to enable its applicability as "scaffold" to cellular support and consequent bone tissue formation, accelerating the osseointegration. Layer densification has been achieved due to polycrystalline nanoapatites deposition on surface and between the biomineralized nHAp/VAMWCNT-O 2 nanocomposites, without any heat treatment. Therefore, through its characteristics and properties these nanocomposite applications can be considered extremely viable for acceleration of in vivo regenerative processes.

show abstract

Surface characterization of Ti–7.5Mo alloy modified by biomimetic method

Cited by 21 publications

References 32 publications

Preparation and bioactive surface modification of the microwave sintered porous Ti-15Mo alloys for biomedical application

Preparation and bioactive surface modification of the microwave sintered porous Ti-15Mo alloys for biomedical application

Influence of Anodization Parameters in the TiO2 Nanotubes Formation on Ti-7.5Mo Alloy Surface for Biomedical Application

In vitro biomineralization of a novel hydroxyapatite/superhydrophilic multiwalled carbon nanotube nanocomposite using simulated body fluids

Contact Info

Product

Resources

About