Particle characteristics and metal release from natural rutile (TiO2) and zircon particles in synthetic body fluids
2012 (English)In: Journal of Biomaterials and Nanobiotechnology, ISSN 2158-7027, E-ISSN 2158-7043, Vol. 3, no 1, 37-49 p.Article in journal (Refereed) Published
Titanium oxide (rutile, TiO2) and zircon (ZrSiO4), known insoluble ceramic materials, are commonly used for coatings of implant materials. We investigate the release of zirconium, titanium, aluminum, iron, and silicon from different micron-sized powders of 6 powders of natural rutile (TiO2) and zircon (ZrSiO4) from a surface perspective. The investiga- tion includes five different synthetic body fluids and two time periods of exposure, 2 and 24 hours. The solution chemi- cals rather than pH are important for the release of zirconium. When exceeding a critical amount of aluminum and sili- con in the surface oxide, the particles seem to be protected from selective pH-specific release at neutral or weakly alka- line pH. The importance of bulk and surface composition and individual changes between different kinds of the same material is elucidated. Changes in material properties and metal release characteristics with particle size are presented for zircon.
Place, publisher, year, edition, pages
2012. Vol. 3, no 1, 37-49 p.
Rutile, Zircon, Metal Ion Release, Particles, Surface Analysis
IdentifiersURN: urn:nbn:se:kth:diva-107900DOI: 10.4236/jbnb.2012.31006OAI: oai:DiVA.org:kth-107900DiVA: diva2:578756
QC 201305022012-12-182012-12-182013-05-03Bibliographically approved