Fe–Pd based ferromagnetic shape memory actuators for medical applications: Biocompatibility, effect of surface roughness and protein coatings

Allenstein, Uta; Ma, Yanhong; Arabi-Hashemi, A.; Zink, Mareike; Mayr, Stefan

doi:10.1016/j.actbio.2012.10.040

Cited by 47 publications

(36 citation statements)

References 52 publications

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“…What's more, surface roughness can also be modified with this method by Mordyuk et al [13] showing ultrasonic impact peening via multiple impacts of high velocity impact pins to increase the surface roughness. In the meantime, surface roughness is noticeably connected with the biocompatibility of the titanium alloys as the previous results by many researchers [14,15]. Wei et al [16] prepared diamond-like carbon (DLC) films roughened with 30 wt% KOH in different etching time and for DLC surface properties.…”

Section: Introductionsupporting

confidence: 59%

RETRACTED ARTICLE: Effect of coupling asynchronous acoustoelectric effects on the corrosion behavior, microhardness and biocompatibility of biomedical titanium alloy strips

Tang

2015

J Mater Sci: Mater Med

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The coupling asynchronous acoustoelectric effects (CAAE) of the high-energy electropulsing treatment (EPT) technique and ultrasonic surface strengthening modification (USSM) are innovatively combined in improving the surface microhardness, corrosion behavior and biocompatibility of the pre-deformed titanium alloy strips. Experimental results show that EPT and USSM processes facilitate the surface grain refining and USSM brings in the micro-dimples on the materials surface, which is attributed to the atoms diffusion acceleration under EPT and severe surface plastic deformation under USSM. These microstructure changes can not only enhance the corrosion resistance in the acidic simulated body fluids and fluoridated acidic artificial saliva but also improve the biocompatibility of the titanium alloy strip materials. Moreover, the surface microhardness of the titanium alloy strips is enhanced to improve the wear resistance. Therefore, CAAE processing is a high-efficiency and energy-saving method for obtaining biomedical titanium alloys with superior anti-corrosion performance, microhardness and biocompatibility, which can be widely applied in dental implants and artificial joint.

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Section: Introductionsupporting

confidence: 59%

RETRACTED ARTICLE: Effect of coupling asynchronous acoustoelectric effects on the corrosion behavior, microhardness and biocompatibility of biomedical titanium alloy strips

Tang

2015

J Mater Sci: Mater Med

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“…Excellent mechanical properties (high specific strength, low density and Young's modulus closing to bones) as well as unique biodegradable behavior of Mg and its alloys in physiological environment make them to be promising candidates as orthopedic and cardiovascular implants [1][2][3], which avoid the necessity of a second removal surgery [4]. In spite of these advantages, biodegradable Mg-based alloys corrode in body fluids too fast to retain mechanical integrity during the whole tissue repair period of 6-12 months [2,5,6].…”

Section: Introductionmentioning

confidence: 99%

Surface characteristics and corrosion resistance of biodegradable magnesium alloy ZK60 modified by Fe ion implantation and deposition

Zheng

Chen

et al. 2014

Progress in Natural Science: Materials International

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The ZK60 magnesium alloy has been modified by Fe ion implantation and deposition with a metal vapor vacuum arc plasma source. The surface morphology, phase constituent and elemental distribution are determined by scanning electron microscopy, transmission electron microscopy, X-ray diffractometer and Auger electron spectroscopy. The results show that Fe thin film is deposited on ZK60 alloy and the corresponding thickness increases from 2.73 μm to 6.36 μm with increasing deposition time. A transition layer mainly composed of Mg, Fe and O elements is formed between Fe thin film and ZK60 substrate. The potentiodynamic polarization tests reveal that a high corrosion potential and a low corrosion current density are detected for the Fe deposited ZK60 alloy, indicating the improvement of corrosion resistance. The tensile deformation test indicates that the Fe deposited film on the ZK60 substrate can sustain 1% tensile strain without any cracks.

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“…Allenstein et al [29] employed 2 different routes to produce (i) single crystalline Fe 70 Pd 30 thin films of 500 nm thickness on MgO (001) substrates of size 1 cm 2 by molecular beam epitaxy, and (ii) splats of the same composition by ultra-rapid quenching of 180 mg Fe 70 Pd 30 as explained in the references [30,31]. Splat-quenching of the alloy Fe 70 Pd 30 was found to be an excellent method to obtain thin foils in the fcc austenite phase, which show a martensitic transformation upon cooling.…”

Section: Molecular Beam Epitaxymentioning

confidence: 99%

“…In a more recent study, Allenstein et al [29] introduced a novel ferromagnetic shape memory alloy, Fe 70 -Pd 30 , as a highly promising new class of materials for medical applications, including tissue regeneration, implants, stents, Figure 16 shows the quantitative growth behavior of MCF-10A cells on Fe-Pd compared with that on standard plastic culture dish. It should be noted that the proliferation was modeled by an exponential increase in cellular density over time:…”

Section: Cytotoxicitymentioning

confidence: 99%

See 1 more Smart Citation

Iron and iron-based alloys for temporary cardiovascular applications

Francis

Yang

Virtanen

et al. 2015

J Mater Sci: Mater Med

143

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In the last decade, biodegradable metals have emerged as a topic of interest for particular biomedical applications which require high strength to bulk ratio, including for cardiovascular stents. The advantages of biodegradable materials are related to the reduction of long term risks associated with the presence of permanent metal implants, e.g. chronic inflammation and in-stent restenosis. From a structural point of view, the analysis of the literature reveals that iron-based alloys used as temporary biodegradable stents have several advantages over Mg-based alloys in terms of ductility and strength. Efforts on the modification and tunability of iron-based alloys design and compositions have been mainly focused on controlling the degradation rate while retaining the mechanical integrity within a reasonable period. The early pre-clinical results of many iron-based alloys seem promising for future implants developments. This review discusses the available literature focusing mainly on: (i) Fe and Fe-based alloys design and fabrication techniques; (ii) in vitro and in vivo performance; (iii) cytotoxicity and cell viability tests.

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Fe–Pd based ferromagnetic shape memory actuators for medical applications: Biocompatibility, effect of surface roughness and protein coatings

Cited by 47 publications

References 52 publications

RETRACTED ARTICLE: Effect of coupling asynchronous acoustoelectric effects on the corrosion behavior, microhardness and biocompatibility of biomedical titanium alloy strips

RETRACTED ARTICLE: Effect of coupling asynchronous acoustoelectric effects on the corrosion behavior, microhardness and biocompatibility of biomedical titanium alloy strips

Surface characteristics and corrosion resistance of biodegradable magnesium alloy ZK60 modified by Fe ion implantation and deposition

Iron and iron-based alloys for temporary cardiovascular applications

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