Laser and chemical surface modifications of titanium grade 2 for medical application

Kwaśniak, Piotr; Pura, Jarosław; Zwolińska, Marta; Wieciński, Piotr; Skarżyńśki, Henryk; Olszewski, Łukasz; Marczak, J.; Garbacz, Halina; Kurzydłowski, K. J.

doi:10.1016/j.apsusc.2014.11.178

Cited by 28 publications

(5 citation statements)

References 44 publications

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“…The biocompatibility performance of a Ti-based alloy is closely related to its corrosion resistance [4,[22][23][24], and the scientific community is making efforts to optimize the composition of the alloy [25][26][27][28][29][30][31][32][33][34][35][36], modify the surface properties [37][38][39][40][41][42][43][44], and replace the alloying elements that induce adverse physiological reactions [45,46]. In the search for the development of new Ti alloys with optimized corrosion resistance and biocompatibility, the β-stabilizing elements are multifunctional candidates with a low elastic modulus closer to that of the human bone, high strength and good corrosion resistance that they may ensure convenient biocompatibility and osseointegration [47][48][49][50].…”

Section: Introductionmentioning

confidence: 99%

REMOVED: In vitro corrosion resistance and in vivo osseointegration testing of new multifunctional beta-type quaternary TiMoZrTa alloys

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Solcan

et al. 2020

Materials Science and Engineering: C

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The present study explores the in vitro and in vivo responses of new multifunctional quaternary beta-type TiMoZrTa alloys designed for biomedical implantation. The electrochemical resistance to corrosion of the alloys was investigated in vitro, using linear potentiodynamic polarization (LPP) and electrochemical impedance spectroscopy (EIS) tests in acidified physiological saline solution at 37 o C. The pH was adjusted to 4.0 by adding lactic acid in order to simulate the hypoxia stress condition that may occur in the healing process of fractures. The biomaterial alloys spontaneously formed a passivation oxide film on their surfaces, which remained stable for polarizations up to +1.0 V SCE , and became more resistant with the increased amount of Ta in the alloy composition. The animal tests of the quaternary Ti-20Mo-7Zr-xTa alloys showed adequate biocompatibility as a tibial implant. Among them, the 15% Ta-alloy implant showed the best osseointegration according to the results of the biochemical, histological and computed tomography characterizations, and can be considered as a potential biomaterial with low elastic modulus (43.6 GPa).

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Section: Introductionmentioning

confidence: 99%

REMOVED: In vitro corrosion resistance and in vivo osseointegration testing of new multifunctional beta-type quaternary TiMoZrTa alloys

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Solcan

et al. 2020

Materials Science and Engineering: C

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“…Conversely, the Zr25Ti specimen preserved the lowest proportion of the HAP-ZrO 2 -Ag layer initial structure. Nevertheless, the highest values of the average roughness and root-mean-square roughness, showing the closely spaced irregularities that would assure a better osseointegration process [34][35][36], were monitored in the case of HAP-ZrO 2 -Ag coated Zr45Ti specimen, in good accordance with our previous reports [14].…”

Section: Microstructural Characterization Of Zrti Implants With Hap -Zro 2 -Ag Coating Layersupporting

confidence: 85%

Osseointegration evaluation of ZrTi alloys with hydroxyapatite-zirconia-silver layer in pig's tibiae

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Lozano-Gorrı́n

et al. 2019

Applied Surface Science

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In this work we studied the main surface characteristics together with the in vivo osseointegration of three Zr-Ti alloys with hydroxyapatite-zirconia-silver (HAP-ZrO 2 -Ag) coating layer. The main purpose was to provide a quantitative evaluation and interpretation from micro to nano scale of the processes involved in the osseointegration of the HAP-ZrO 2 -Ag coated Zr-Ti specimens in a pig model. The surface characteristics were studied by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD). After the insertion of the implants into pig tibia, the osseointegration was investigated by means of biochemical analysis as well as bone histomorphometric and computed tomography measurements. The results of this in vivo study sustains that the capacity of the Zr-Ti specimens coated with HAP-ZrO 2 -Ag to promote osteogenesis is significant during the first month after implantation as compared with the control, being influenced by the interactions between bone tissue and HAP-ZrO 2 -Ag surfaces, but also by the chemical composition of the alloys.

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“…The local modification of the material properties has been extensively studied in the case of age hardenable Al alloys (as those belonging to the 6xxx series). In fact, according to the well-known precipitation sequence of Al-Mg-Si alloys [14][15][16][17][18][19], the heat treatment can be designed to dissolve precipitates at the grain boundaries (from a T6/T4 state) to improve the material formability or, alternatively, start from a more formable condition and use the local treatment to promote the precipitation of hardening phases. In particular, due to the complexity of the process and the wide number of parameters involved in both steps, the process design is not trivial and a Finite Element (FE) based approach represents an efficient tool able to provide the optimal value of the process parameters to effectively treat selected areas while creating a very small transition region (due to the high material conductivity) [20].…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of the Local Laser Treatment to Improve the Formability of Age Hardenable Aluminium Alloys

Piccininni

Palumbo

2020

Materials

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The research of innovative methodologies to improve the Aluminium alloys formability at room temperature still remains an open question: the local modification of the material properties via short-term heat treatments followed by the stamping at room temperature is reported to be an effective alternative to the forming in warm conditions. In the present work, such a methodology has been applied to the deep drawing of an age-hardenable Aluminium alloy (AA6082-T6) using an experimental/numerical approach. A preliminary extensive material characterization was aimed at investigating the material behaviour: (i) in the as-received condition (peak hardening), (ii) in the supersaturated condition (obtained by physical simulation) and (iii) after being locally solutioned via laser heating. A Finite Element based approach (Abaqus CAE, v. 6.17) was then used to design the laser treatment of the blanks to be subsequently deep drawn at room temperature: a 2D axisymmetric model of the deep drawing process was coupled with the optimization platform modeFRONTIER in order to define the radial extent of the laser heat treated area able to maximize the Limit Drawing Ratio. The experimental tests were finally conducted for validation purposes and revealed the effectiveness of the adopted approach which allowed to improve the drawability of more than 20% with respect to the as received condition (T6).

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Laser and chemical surface modifications of titanium grade 2 for medical application

Cited by 28 publications

References 44 publications

REMOVED: In vitro corrosion resistance and in vivo osseointegration testing of new multifunctional beta-type quaternary TiMoZrTa alloys

REMOVED: In vitro corrosion resistance and in vivo osseointegration testing of new multifunctional beta-type quaternary TiMoZrTa alloys

Osseointegration evaluation of ZrTi alloys with hydroxyapatite-zirconia-silver layer in pig's tibiae

Design and Optimization of the Local Laser Treatment to Improve the Formability of Age Hardenable Aluminium Alloys

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