Oxygen and sodium plasma-implanted nickel-titanium shape memory alloy: A novel method to promote hydroxyapatite formation and suppress nickel leaching

Y. L. Chan; K. W K Yeung; W. W. Lu; A. H W Ngan; K. D K Luk; D. Chan; S. L. Wu; X. M. Liu; Paul K. Chu; K. M C Cheung

doi:10.1016/j.nimb.2007.01.072

Oxygen and sodium plasma-implanted nickel-titanium shape memory alloy: A novel method to promote hydroxyapatite formation and suppress nickel leaching

Y. L. Chan, K. W K Yeung, W. W. Lu, A. H W Ngan, K. D K Luk, D. Chan, S. L. Wu, X. M. Liu, Paul K. Chu, K. M C Cheung

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

5 Citations (Scopus)

Abstract

This study aims at modifying the surface bioactivity of NiTi by sodium and oxygen plasma immersion ion implantation (PIII). Sodium ions were implanted into oxygen plasma-implanted NiTi and untreated NiTi. X-ray photoelectron spectroscopy (XPS) revealed that more sodium was implanted into the oxygen pre-implanted sample in comparison with the untreated surface. Scanning electron microscopy (SEM) coupled with energy dispersive X-ray analysis (EDX) detected calcium and phosphorus rich deposits on both samples after immersion in simulated body fluids for 7 and 21 days. Inductively-coupled plasma mass spectrometry (ICPMS) conducted on the deposits dissolved in diluted hydrochloric acid showed more calcium on the oxygen PIII samples. The improved corrosion resistance of the oxygen PIII NiTi was retained after sodium PIII as evaluated by potentiodynamic polarization tests. Better spreading and proliferation of osteoblasts were also observed on the treated samples. © 2007 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	687-691
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	257
Issue number	1-2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.nimb.2007.01.072
Publication status	Published - Apr 2007

Research Keywords

Bioactivity
Corrosion resistance
NiTi
Plasma immersion ion implantation

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Chan, Y. L., Yeung, K. W. K., Lu, W. W., Ngan, A. H. W., Luk, K. D. K., Chan, D., Wu, S. L., Liu, X. M., Chu, P. K., & Cheung, K. M. C. (2007). Oxygen and sodium plasma-implanted nickel-titanium shape memory alloy: A novel method to promote hydroxyapatite formation and suppress nickel leaching. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 257(1-2 SPEC. ISS.), 687-691. https://doi.org/10.1016/j.nimb.2007.01.072

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title = "Oxygen and sodium plasma-implanted nickel-titanium shape memory alloy: A novel method to promote hydroxyapatite formation and suppress nickel leaching",

abstract = "This study aims at modifying the surface bioactivity of NiTi by sodium and oxygen plasma immersion ion implantation (PIII). Sodium ions were implanted into oxygen plasma-implanted NiTi and untreated NiTi. X-ray photoelectron spectroscopy (XPS) revealed that more sodium was implanted into the oxygen pre-implanted sample in comparison with the untreated surface. Scanning electron microscopy (SEM) coupled with energy dispersive X-ray analysis (EDX) detected calcium and phosphorus rich deposits on both samples after immersion in simulated body fluids for 7 and 21 days. Inductively-coupled plasma mass spectrometry (ICPMS) conducted on the deposits dissolved in diluted hydrochloric acid showed more calcium on the oxygen PIII samples. The improved corrosion resistance of the oxygen PIII NiTi was retained after sodium PIII as evaluated by potentiodynamic polarization tests. Better spreading and proliferation of osteoblasts were also observed on the treated samples. {\textcopyright} 2007 Elsevier B.V. All rights reserved.",

keywords = "Bioactivity, Corrosion resistance, NiTi, Plasma immersion ion implantation",

author = "Chan, {Y. L.} and Yeung, {K. W K} and Lu, {W. W.} and Ngan, {A. H W} and Luk, {K. D K} and D. Chan and Wu, {S. L.} and Liu, {X. M.} and Chu, {Paul K.} and Cheung, {K. M C}",

year = "2007",

month = apr,

doi = "10.1016/j.nimb.2007.01.072",

language = "English",

volume = "257",

pages = "687--691",

journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",

issn = "0168-583X",

publisher = "Elsevier B.V.",

number = "1-2 SPEC. ISS.",

}

Chan, YL, Yeung, KWK, Lu, WW, Ngan, AHW, Luk, KDK, Chan, D, Wu, SL, Liu, XM, Chu, PK & Cheung, KMC 2007, 'Oxygen and sodium plasma-implanted nickel-titanium shape memory alloy: A novel method to promote hydroxyapatite formation and suppress nickel leaching', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 257, no. 1-2 SPEC. ISS., pp. 687-691. https://doi.org/10.1016/j.nimb.2007.01.072

Oxygen and sodium plasma-implanted nickel-titanium shape memory alloy: A novel method to promote hydroxyapatite formation and suppress nickel leaching. / Chan, Y. L.; Yeung, K. W K; Lu, W. W. et al.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 257, No. 1-2 SPEC. ISS., 04.2007, p. 687-691.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Oxygen and sodium plasma-implanted nickel-titanium shape memory alloy

T2 - A novel method to promote hydroxyapatite formation and suppress nickel leaching

AU - Chan, Y. L.

AU - Yeung, K. W K

AU - Lu, W. W.

AU - Ngan, A. H W

AU - Luk, K. D K

AU - Chan, D.

AU - Wu, S. L.

AU - Liu, X. M.

AU - Chu, Paul K.

AU - Cheung, K. M C

PY - 2007/4

Y1 - 2007/4

N2 - This study aims at modifying the surface bioactivity of NiTi by sodium and oxygen plasma immersion ion implantation (PIII). Sodium ions were implanted into oxygen plasma-implanted NiTi and untreated NiTi. X-ray photoelectron spectroscopy (XPS) revealed that more sodium was implanted into the oxygen pre-implanted sample in comparison with the untreated surface. Scanning electron microscopy (SEM) coupled with energy dispersive X-ray analysis (EDX) detected calcium and phosphorus rich deposits on both samples after immersion in simulated body fluids for 7 and 21 days. Inductively-coupled plasma mass spectrometry (ICPMS) conducted on the deposits dissolved in diluted hydrochloric acid showed more calcium on the oxygen PIII samples. The improved corrosion resistance of the oxygen PIII NiTi was retained after sodium PIII as evaluated by potentiodynamic polarization tests. Better spreading and proliferation of osteoblasts were also observed on the treated samples. © 2007 Elsevier B.V. All rights reserved.

AB - This study aims at modifying the surface bioactivity of NiTi by sodium and oxygen plasma immersion ion implantation (PIII). Sodium ions were implanted into oxygen plasma-implanted NiTi and untreated NiTi. X-ray photoelectron spectroscopy (XPS) revealed that more sodium was implanted into the oxygen pre-implanted sample in comparison with the untreated surface. Scanning electron microscopy (SEM) coupled with energy dispersive X-ray analysis (EDX) detected calcium and phosphorus rich deposits on both samples after immersion in simulated body fluids for 7 and 21 days. Inductively-coupled plasma mass spectrometry (ICPMS) conducted on the deposits dissolved in diluted hydrochloric acid showed more calcium on the oxygen PIII samples. The improved corrosion resistance of the oxygen PIII NiTi was retained after sodium PIII as evaluated by potentiodynamic polarization tests. Better spreading and proliferation of osteoblasts were also observed on the treated samples. © 2007 Elsevier B.V. All rights reserved.

KW - Bioactivity

KW - Corrosion resistance

KW - NiTi

KW - Plasma immersion ion implantation

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-33947649137&origin=recordpage

U2 - 10.1016/j.nimb.2007.01.072

DO - 10.1016/j.nimb.2007.01.072

M3 - RGC 21 - Publication in refereed journal

SN - 0168-583X

VL - 257

SP - 687

EP - 691

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

IS - 1-2 SPEC. ISS.

ER -

Chan YL, Yeung KWK, Lu WW, Ngan AHW, Luk KDK, Chan D et al. Oxygen and sodium plasma-implanted nickel-titanium shape memory alloy: A novel method to promote hydroxyapatite formation and suppress nickel leaching. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 2007 Apr;257(1-2 SPEC. ISS.):687-691. doi: 10.1016/j.nimb.2007.01.072

Oxygen and sodium plasma-implanted nickel-titanium shape memory alloy: A novel method to promote hydroxyapatite formation and suppress nickel leaching

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