The preparation of calcium phosphate coatings on titanium and nickel-titanium by rf-magnetron-sputtered deposition

Composition, structure and micromechanical properties

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74 Citations (Scopus)

Abstract

Thin calcium phosphate coatings with a thickness of 0.09 to 2.7 μm were prepared by radio-frequency magnetron sputtering deposition on NiTi and Ti substrates at a substrate temperature of 500 °C in argon atmosphere. Scanning electron microscopy (SEM) showed that the surface structure is uniform and dense without visible defects (pores and microcracks). Rutherford backscattering spectroscopy (RBS) and energy-dispersive X-ray spectroscopy (EDX) confirmed that the coating contains calcium, phosphorus, and oxygen with a uniform composition. Crystallographically, the coating consists of crystalline hydroxyapatite which is also supported by infrared spectroscopy. The mechanical characteristics of the coating were measured by nanoindentation (Vickers indenter), giving a nanohardness of 10 GPa and a Young's modulus of 110 GPa. The strength of adhesion of the calcium phosphate coating to the metallic substrates depended on the coating's thickness and decreased for a thickness larger than 1.6 μm. No difference was observed between NiTi and Ti substrates.

Original languageEnglish
Pages (from-to)3913-3920
Number of pages8
JournalSurface and Coatings Technology
Volume202
Issue number16
DOIs
Publication statusPublished - 15 May 2008

Fingerprint

Phosphate coatings
calcium phosphates
Calcium phosphate
Titanium
titanium
Nickel
nickel
coatings
Coatings
preparation
Substrates
Chemical analysis
Nanohardness
Rutherford backscattering spectroscopy
Microcracks
Nanoindentation
Hydroxyapatite
Surface structure
Magnetron sputtering
Phosphorus

Keywords

  • Adhesion strength
  • Calcium phosphate coating
  • rf-magnetron sputtering

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

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title = "The preparation of calcium phosphate coatings on titanium and nickel-titanium by rf-magnetron-sputtered deposition: Composition, structure and micromechanical properties",
abstract = "Thin calcium phosphate coatings with a thickness of 0.09 to 2.7 μm were prepared by radio-frequency magnetron sputtering deposition on NiTi and Ti substrates at a substrate temperature of 500 °C in argon atmosphere. Scanning electron microscopy (SEM) showed that the surface structure is uniform and dense without visible defects (pores and microcracks). Rutherford backscattering spectroscopy (RBS) and energy-dispersive X-ray spectroscopy (EDX) confirmed that the coating contains calcium, phosphorus, and oxygen with a uniform composition. Crystallographically, the coating consists of crystalline hydroxyapatite which is also supported by infrared spectroscopy. The mechanical characteristics of the coating were measured by nanoindentation (Vickers indenter), giving a nanohardness of 10 GPa and a Young's modulus of 110 GPa. The strength of adhesion of the calcium phosphate coating to the metallic substrates depended on the coating's thickness and decreased for a thickness larger than 1.6 μm. No difference was observed between NiTi and Ti substrates.",
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author = "Pichugin, {V. F.} and Surmenev, {R. A.} and Shesterikov, {E. V.} and Ryabtseva, {M. A.} and Eshenko, {E. V.} and Tverdokhlebov, {S. I.} and O. Prymak and M. Epple",
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T1 - The preparation of calcium phosphate coatings on titanium and nickel-titanium by rf-magnetron-sputtered deposition

T2 - Composition, structure and micromechanical properties

AU - Pichugin, V. F.

AU - Surmenev, R. A.

AU - Shesterikov, E. V.

AU - Ryabtseva, M. A.

AU - Eshenko, E. V.

AU - Tverdokhlebov, S. I.

AU - Prymak, O.

AU - Epple, M.

PY - 2008/5/15

Y1 - 2008/5/15

N2 - Thin calcium phosphate coatings with a thickness of 0.09 to 2.7 μm were prepared by radio-frequency magnetron sputtering deposition on NiTi and Ti substrates at a substrate temperature of 500 °C in argon atmosphere. Scanning electron microscopy (SEM) showed that the surface structure is uniform and dense without visible defects (pores and microcracks). Rutherford backscattering spectroscopy (RBS) and energy-dispersive X-ray spectroscopy (EDX) confirmed that the coating contains calcium, phosphorus, and oxygen with a uniform composition. Crystallographically, the coating consists of crystalline hydroxyapatite which is also supported by infrared spectroscopy. The mechanical characteristics of the coating were measured by nanoindentation (Vickers indenter), giving a nanohardness of 10 GPa and a Young's modulus of 110 GPa. The strength of adhesion of the calcium phosphate coating to the metallic substrates depended on the coating's thickness and decreased for a thickness larger than 1.6 μm. No difference was observed between NiTi and Ti substrates.

AB - Thin calcium phosphate coatings with a thickness of 0.09 to 2.7 μm were prepared by radio-frequency magnetron sputtering deposition on NiTi and Ti substrates at a substrate temperature of 500 °C in argon atmosphere. Scanning electron microscopy (SEM) showed that the surface structure is uniform and dense without visible defects (pores and microcracks). Rutherford backscattering spectroscopy (RBS) and energy-dispersive X-ray spectroscopy (EDX) confirmed that the coating contains calcium, phosphorus, and oxygen with a uniform composition. Crystallographically, the coating consists of crystalline hydroxyapatite which is also supported by infrared spectroscopy. The mechanical characteristics of the coating were measured by nanoindentation (Vickers indenter), giving a nanohardness of 10 GPa and a Young's modulus of 110 GPa. The strength of adhesion of the calcium phosphate coating to the metallic substrates depended on the coating's thickness and decreased for a thickness larger than 1.6 μm. No difference was observed between NiTi and Ti substrates.

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