A comparative study of the cytotoxicity and corrosion resistance of nickel–titanium and titanium–niobium shape memory alloys

McMahon, Rebecca E.; Ma, Ji; Verkhoturov, Stanislav V.; Muñoz-Pinto, Dany J.; Караман, И.; Rubitschek, F.; Maier, Hans Jürgen; Hahn, Mariah S.

doi:10.1016/j.actbio.2012.03.034

Cited by 105 publications

(62 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although it is known that pure Ni is a toxic element, Ni-hypersensitivity of the human body has not been reported [11]. While research on Ni-free Ti-based SMAs for biomedical applications is still ongoing [12][13][14][15], NiTi is still among the popular SMAs in biomedical applications.…”

Section: Introductionmentioning

confidence: 99%

Micromachined Shape-Memory-Alloy Microactuators and Their Application in Biomedical Devices

2015

View full text Add to dashboard Cite

Shape memory alloys (SMAs) are a class of smart materials characterized by shape memory effect and pseudo-elastic behavior. They have the capability to retain their original form when subjected to certain stimuli, such as heat or a magnetic field. These unique properties have attracted many researchers to seek their application in various fields including transportation, aerospace, and biomedical. The ease process adaption from semiconductor manufacturing technology provides many opportunities for designing micro-scale devices using this material. This paper gives an overview of the fabrication and manufacturing technique of thin-film and bulk micromachined SMAs. Key features such as material properties, transformation temperature, material composition, and actuation method are also presented. The application and micromechanism for both thin-film and bulk SMA are described. Finally, the microactuator devices emphasized for biomedical applications such as microgrippers and micropumps are highlighted. The presented review will provide information for researchers who are actively working on the development of SMA-based microscale biomedical devices.

show abstract

Section: Introductionmentioning

confidence: 99%

Micromachined Shape-Memory-Alloy Microactuators and Their Application in Biomedical Devices

2015

View full text Add to dashboard Cite

show abstract

“…Comparative studies of biocompatibility between alloys 2 show that the solubilized nickel may present several adverse reactions. Despite the reports of some authors 3,4 of the lack of cytotoxicity of alloys, a study conducted by Fili 5 found that Ni-rich precipitates in NiTi osseous implants chemically passivized with HF, HNO 3 and H 2 O 300 days after implantation.…”

Section: Introductionmentioning

confidence: 99%

The Electrochemical Behavior of the NiTi Alloy in Different Simulated Body Fluids

et al. 2015

View full text Add to dashboard Cite

“…The corrosion resistance of the TiNb alloys has also been shown to be similar or superior to that of Ti alone. Despite the potential benefits of the TiNb alloys, their development for biomedical applications is still at the beginning 7 .…”

Section: Introductionmentioning

confidence: 99%

Electrochemical behavior of biocompatible alloys

Petrášová¹,

Losertová²

2015

Mater. Tehnol.

View full text Add to dashboard Cite

The electrochemical behavior of Ti6Al4V and Ti22Nb alloys was studied in a 0.15 M (0.9 %) physiological sodium chloride solution at room temperature (22 ± 1)°C. The experimental samples of the Ti6Al4V alloy were in different states of the thermomechanical treatment: as-received and hot rolled. The samples of Ti22Nb were studied in the as-cast, heat-treated and aged stages. The microstructural features of the Ti6Al4V alloy in three different states influenced not only the passivation but also the rate of corrosion that was (0.12, 0.07 and 0.10) mm per year for the equiaxed (a + b), acicular a in the transformed b grains and coarse lamellar (a + b) phases, respectively. The as-cast TiNb sample with a dendritic microstructure and very fine martensite showed the lowest corrosion rate of 0.26 mm per year unlike the specimens after the heat treatment and aging with the rate of 0.34 mm and 0.33 mm per year, respectively. Keywords: Ti6Al4V, Ti22Nb, electrochemical behavior Preu~evano je bilo elektrokemijsko vedenje zlitin Ti6Al4V in Ti22Nb v fiziolo{ki raztopini natrijevega klorida 0,15 M (0,9 %) pri sobni temperaturi (22 ± 1)°C. Vzorci zlitine Ti6Al4V za preizkuse so bili v razli~nih termomehanskih stanjih: v dobavljenem stanju in vro~e valjani. Vzorci Ti22Nb so bili v litem stanju, toplotno obdelani in starani. Razlike v mikrostrukturi zlitine Ti6Al4V v treh razli~nih stanjih vplivajo na pasivacijo in na hitrost korozije, ki je bila (0,12, 0,07 in 0,10) mm na leto pri enakoosnih (a + b), igli~astih a-in transformiranih b-zrnih ter grobo lamelarnih fazah (a + b). Vzorci TiNb z dendritno mikrostrukturo in drobnim martenzitom so pokazali najmanj{o hitrost korozije 0,26 mm na leto, v primerjavi z vzorci po toplotni obdelavi in staranju pa z 0,34 mm in 0,33 mm na leto.

show abstract

A comparative study of the cytotoxicity and corrosion resistance of nickel–titanium and titanium–niobium shape memory alloys

Cited by 105 publications

References 51 publications

Micromachined Shape-Memory-Alloy Microactuators and Their Application in Biomedical Devices

Micromachined Shape-Memory-Alloy Microactuators and Their Application in Biomedical Devices

The Electrochemical Behavior of the NiTi Alloy in Different Simulated Body Fluids

Electrochemical behavior of biocompatible alloys

Contact Info

Product

Resources

About