Microstructure and biocompatibility investigation of biomaterial alumina after 30 keV and 60 keV nitrogen ion implantation

Polycrystalline alumina is widely used as biomaterial. It is being used as hip joints, tooth roots etc. Commercially available polycrystalline alumina samples were implanted with 30 keV and 60 keV energy N + ions at different ion doses ranging from 5 × 10 15 ions/cm 2 to 5 × 10 17 ions/cm 2. Change...

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Bibliographic Details
Published inSurface & coatings technology Vol. 203; no. 17; pp. 2541 - 2545
Main Authors Shikha, Deep, Jha, Usha, Sinha, S.K., Barhai, P.K., Nair, K.G.M., Dash, S., Tyagi, A.K., Kalavathy, S., Kothari, D.C.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier B.V 15.06.2009
Elsevier
Subjects
Alumina
Applied sciences
Biocompatibility
Compound formation
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Materials science
Metals. Metallurgy
Nanohardness
Other surface treatments
Physics
Production techniques
Surface roughness
Surface treatment
Surface treatments
Nanohardness
Biocompatibility
Surface roughness
Compound formation
Alumina
Ion implantation
Roughness
Surface treatments
Nitrogen
Surface states
Biomedical materials
Nitrogen ions
Microstructure
Application
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Summary:Polycrystalline alumina is widely used as biomaterial. It is being used as hip joints, tooth roots etc. Commercially available polycrystalline alumina samples were implanted with 30 keV and 60 keV energy N + ions at different ion doses ranging from 5 × 10 15 ions/cm 2 to 5 × 10 17 ions/cm 2. Change in surface structure is studied using optical microscope. Compound formation at the surface of alumina is confirmed with GXRD. The change in nanohardness at different energies and different ion doses is studied. Improvement in corrosion resistance in Ringer solution is observed implying improvement in biocompatibility of alumina after nitrogen ion implantation. The thrombogenicity of unimplanted and implanted alumina was evaluated using whole blood kinetic clotting time method. Wettability test was carried to judge cell–material adhesion by measuring the contact angle. A comparison of the change in properties after 30 keV and 60 keV nitrogen ion implantation is described in the paper.
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ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2009.02.071