Evaluation of mechanical properties, in vitro corrosion resistance and biocompatibility of Gum Metal in the context of implant applications

Golasiński, Karol; Detsch, Rainer; Szklarska, Magdalena; Łosiewicz, B.; Zubko, Maciej; Mackiewicz, Sławomir; Pieczyska, E. A.; Boccaccını, Aldo R.

doi:10.1016/j.jmbbm.2020.104289

Cited by 8 publications

(4 citation statements)

References 34 publications

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Section: Electrochemical Impedance Spectroscopy Studysupporting

confidence: 87%

“…It can be assumed that the coatings consisted of a porous outer layer and a dense inner layer, which acted as a barrier layer against corrosion. This long-term behavior is similar to the previously noted behavior of passivated Ti alloys in solutions containing chlorides which initiated pitting corrosion [25,37,38]. The EIS experimental data on the protective properties of the surface of the sandblasted and autoclaved CpTi G4 and CpTi G4|TiO2|ACP electrodes, recorded during the first 7 days of immersion, were approximated using the equivalent electrical circuit mode for the pitting corrosion process which is called one-CPE model (Figure 3e).…”

Section: Electrochemical Impedance Spectroscopy Studysupporting

confidence: 78%

“…This indicates that the electrode surface was not stable during the corrosion test. Such long-term impedance behavior characterizes titanium and its alloys coated with passive layers in a biological milieu [25,37,38]. The experimental high values of |Z| f→0 and ϕ, presented in Figure 3a The parameter log|Z| f=0.1Hz can be used for the comparative assessment of in vitro corrosion resistance of the tested materials (Figure 4).…”

Section: Electrochemical Impedance Spectroscopy Studymentioning

confidence: 98%

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Long-Term Assessment of the In Vitro Corrosion Resistance of Biomimetic ACP Coatings Electrodeposited from an Acetate Bath

Osak

Maszybrocka

Kubisztal

et al. 2021

JFB

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Calcium phosphate coatings are able to improve the osseointegration process due to their chemical composition, which is similar to that of bone tissues. In this work, to increase the long-term corrosion resistance and to improve the osseointegration process of commercially pure titanium Grade 4 (CpTi G4), biomimetic amorphous calcium phosphate (ACP) coatings were electrodeposited for the first time from an acetate bath with a pH level of 7.0 and a Ca:P ratio of 1.67. ACP coatings were obtained on CpTi G4 substrate subjected to sandblasting and autoclaving using electrochemically assisted deposition at a potential of −3 V relative to the open circuit potential for 30 min at room temperature. SEM, EDS, 2D roughness profiles, amplitude-sensitive eddy current method, and Kelvin scanning probe were used for the surface characterization of the biomaterial under study. In vitro corrosion resistance tests were conducted for 21 days in artificial saliva using open circuit potential, polarization curves, and electrochemical impedance spectroscopy measurements. The passive-transpassive behavior was revealed for the obtained ACP coatings. The long-term corrosion resistance test showed a deterioration of the protective properties for CpTi G4 uncoated and coated with ACP with immersion time. The mechanism and kinetics of the pitting corrosion on the CpTi G4|TiO2|ACP coating system are discussed in detail.

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Section: Electrochemical Impedance Spectroscopy Studysupporting

confidence: 87%

Section: Electrochemical Impedance Spectroscopy Studysupporting

confidence: 78%

Section: Electrochemical Impedance Spectroscopy Studymentioning

confidence: 98%

See 1 more Smart Citation

Long-Term Assessment of the In Vitro Corrosion Resistance of Biomimetic ACP Coatings Electrodeposited from an Acetate Bath

Osak

Maszybrocka

Kubisztal

et al. 2021

JFB

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“…[2,3] The mechanical properties combined with the nontoxic and nonallergic chemical composition of Gum Metal make it a promising candidate for orthopedic and dental implants. [4][5][6] Conventional Ti-based materials used in the medical industry, such as pure titanium or Ti-6Al-4V, are characterized by a relatively high Young's modulus (> 100 GPa) which is over five times higher compared to that of a human bone. [4] Moreover, aluminum is considered a factor causing Alzheimer's disease, and the content of vanadium can be toxic.…”

Section: Introductionmentioning

confidence: 99%

Quasi-Static and Dynamic Compressive Behavior of Gum Metal: Experiment and Constitutive Model

Golasiński

Janiszewski

Sienkiewicz

et al. 2021

Metall Mater Trans A

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The quasi-static and high strain rate compressive behavior of Gum Metal with composition Ti-36Nb-2Ta-3Zr-0.3O (wt pct) has been investigated using an electromechanical testing machine and a split Hopkinson pressure bar, respectively. The stress–strain curves obtained for Gum Metal tested under monotonic and dynamic loadings revealed a strain-softening effect which intensified with increasing strain rate. Moreover, the plastic flow stress was observed to increase for both static and dynamic loading conditions with increasing strain rate. The microstructural characterization of the tested Gum Metal specimens showed particular deformation mechanisms regulating the phenomena of strain hardening and strain softening, namely an adiabatic shear band formed at ~ 45 deg with respect to the loading direction as well as widely spaced deformation bands (kink bands). Dislocations within the channels intersecting with twins may cause strain hardening while recrystallized grains and kink bands with crystal rotation inside the grains may lead to strain softening. A constitutive description of the compressive behavior of Gum Metal was proposed using a modified Johnson–Cook model. Good agreement between the experimental and the numerical data obtained in the work was achieved.

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Surface modification techniques of magnesium-based alloys for implant applications

Mahto

Singh²,

Malik³

2022

J Coat Technol Res

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Evaluation of mechanical properties, in vitro corrosion resistance and biocompatibility of Gum Metal in the context of implant applications

Cited by 8 publications

References 34 publications

Long-Term Assessment of the In Vitro Corrosion Resistance of Biomimetic ACP Coatings Electrodeposited from an Acetate Bath

Long-Term Assessment of the In Vitro Corrosion Resistance of Biomimetic ACP Coatings Electrodeposited from an Acetate Bath

Quasi-Static and Dynamic Compressive Behavior of Gum Metal: Experiment and Constitutive Model

Surface modification techniques of magnesium-based alloys for implant applications

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