Abstract
Thin calcium phosphate coatings were deposited on NiTi substrates (plates) by rf-magnetron sputtering. The release of nickel upon immersion in water or in saline solution (0.9% NaCl in water) was measured by atomic absorption spectroscopy (AAS) for 42 days. The coating was analyzed before and after immersion by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). After an initial burst during the first 7 days that was observed for all samples, the rate of nickel release decreased 0.4-0.5 ng cm-2 d-1 for a 0.5 μm-thick calcium phosphate coating (deposited at 290 W). This was much less than the release from uncoated NiTi (3.4-4.4 ng cm-2 d-1). Notably, the nickel release rate was not significantly different in pure water and in aqueous saline solution.
| Original language | English |
|---|---|
| Pages (from-to) | 1233-1239 |
| Number of pages | 7 |
| Journal | Journal of Materials Science: Materials in Medicine |
| Volume | 21 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 2010 |
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ASJC Scopus subject areas
- Biophysics
- Biomaterials
- Bioengineering
- Biomedical Engineering
Cite this
The release of nickel from nickel-titanium (NiTi) is strongly reduced by a sub-micrometer thin layer of calcium phosphate deposited by rf-magnetron sputtering. / Surmenev, R. A.; Ryabtseva, M. A.; Shesterikov, Evgeniy Viktorovich; Pichugin, V. F.; Peitsch, T.; Epple, M.
In: Journal of Materials Science: Materials in Medicine, Vol. 21, No. 4, 04.2010, p. 1233-1239.Research output: Contribution to journal › Article
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TY - JOUR
T1 - The release of nickel from nickel-titanium (NiTi) is strongly reduced by a sub-micrometer thin layer of calcium phosphate deposited by rf-magnetron sputtering
AU - Surmenev, R. A.
AU - Ryabtseva, M. A.
AU - Shesterikov, Evgeniy Viktorovich
AU - Pichugin, V. F.
AU - Peitsch, T.
AU - Epple, M.
PY - 2010/4
Y1 - 2010/4
N2 - Thin calcium phosphate coatings were deposited on NiTi substrates (plates) by rf-magnetron sputtering. The release of nickel upon immersion in water or in saline solution (0.9% NaCl in water) was measured by atomic absorption spectroscopy (AAS) for 42 days. The coating was analyzed before and after immersion by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). After an initial burst during the first 7 days that was observed for all samples, the rate of nickel release decreased 0.4-0.5 ng cm-2 d-1 for a 0.5 μm-thick calcium phosphate coating (deposited at 290 W). This was much less than the release from uncoated NiTi (3.4-4.4 ng cm-2 d-1). Notably, the nickel release rate was not significantly different in pure water and in aqueous saline solution.
AB - Thin calcium phosphate coatings were deposited on NiTi substrates (plates) by rf-magnetron sputtering. The release of nickel upon immersion in water or in saline solution (0.9% NaCl in water) was measured by atomic absorption spectroscopy (AAS) for 42 days. The coating was analyzed before and after immersion by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). After an initial burst during the first 7 days that was observed for all samples, the rate of nickel release decreased 0.4-0.5 ng cm-2 d-1 for a 0.5 μm-thick calcium phosphate coating (deposited at 290 W). This was much less than the release from uncoated NiTi (3.4-4.4 ng cm-2 d-1). Notably, the nickel release rate was not significantly different in pure water and in aqueous saline solution.
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U2 - 10.1007/s10856-010-3989-5
DO - 10.1007/s10856-010-3989-5
M3 - Article
VL - 21
SP - 1233
EP - 1239
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
SN - 0957-4530
IS - 4
ER -