uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Nano-porous Alumina Coatings for Improved Bone Implant Interfaces
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Surface Biotechnology.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Surface Biotechnology.
Show others and affiliations
2003 (English)In: Materialwissenschaft und Werkstofftechnik, ISSN 0933-5137, E-ISSN 1521-4052, Vol. 34, no 12, 1064-1068 p.Article in journal (Refereed) Published
Abstract [en]

A new method is proposed for coating implants that produces a metal implant covered in a layer of nano-porous alumina ceramic. These layers are produced by first depositing a layer of aluminium on the implant surface and then anodising it in phosphoric acid to produce the nano-porous structure. This process results in the conversion of the aluminium to alumina containing 6-8wt% phosphate ions. The surface alumina layer is bonded to the substrate via an interfacial layer of fully dense anodised titanium oxide. Mechanical measurements have shown that the shear and tensile strength of this coating are in excess of 20MPa and 10MPa, respectively.

The biological performance of nano-porous alumina material has been assessed and shown to be highly favourable, supporting normal osteoblastic activity and maintaining the osteoblastic phenotype. The filling of the nano-porous coating with bioactive material to achieve enhanced biological performance has been investigated using colloidal silica as an analogue for a Bioglass sol. The coating has been loaded with silica by dipping in colloidal silica with a pH of 5.6. Pore filling equivalent to 1.3 wt% SiO2 in the coating as a whole has been achieved in this way.

Place, publisher, year, edition, pages
2003. Vol. 34, no 12, 1064-1068 p.
Keyword [en]
Cementless, Implant, Anodisation, Electrophoresis, Bone, Alumina
National Category
Engineering and Technology
URN: urn:nbn:se:uu:diva-48978DOI: 10.1002/mawe.200300707ISI: 000188374700007OAI: oai:DiVA.org:uu-48978DiVA: diva2:76885
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2014-01-28Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Pålsgård, Eva
By organisation
Surface Biotechnology
In the same journal
Materialwissenschaft und Werkstofftechnik
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 161 hits
ReferencesLink to record
Permanent link

Direct link