ISSN:
1662-8985
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:
Electro-Fenton process as a modified Fenton’s oxidation method in waster watertreatment can provide a stable hydroxyl radical (·OH) source by continuous reaction ofelectrochemically generated H2O2 with Fe2+ ions for surface oxidation modification of NiTi shapememory alloy (SMA). In this work, effects of electro-Fenton process on blood compatibility andnickel suppression of NiTi SMA were investigated by SEM and XPS, inductively-coupled plasmamass spectrometry (ICPMS), hemolysis analysis and blood platelet adhesion test. It is found thatelectro-Fenton process is a notably effective way to impede out-diffusion of Ni from NiTi SMA insimulated body fluids during the entire ten week immersion period. It can also improve thehemolysis resistance and thromboresistance of biomedical NiTi SMA. The improvement of bloodcompatibility and nickel suppression of NiTi SMA can be attributed to the formation of surfacetitania film with a Ni-free zone near its top surface by electro-Fenton process
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.47-50.314.pdf
Permalink