ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Scanning (SEM) and cross-sectional transmission (TEM) electron microscopy analyseshave been performed to study the transformations induced on the surface of titanium implants by asequence of chemical treatments having as goal to induce the nucleation and growth of hydroxycarbonatedapatite (HCA). In the first step, an acid etching forms a rough titanium hydride layer,which remains unchanged after subsequent treatments. In a second step, soaking in a NaOHsolution induces the growth of nanobelt tangles of nanocrystallized, monoclinic sodium titanate. Ina third step, soaking in a simulated body fluid transforms sodium titanate into calcium andphosphorus titanate, by ion exchange in the monoclinic structure. Then, HCA grows and embodiesthe tangled structure. The interfaces between the different layers are shown to be strong enough toprevent from interfacial decohesion. The role of the titanate structure in the nucleation of HCA isfinally discussed
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.361-363.637.pdf
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