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Abstract:
Ag-containing bioactive glass films (Ag/Ca atomic ratios of 0, 5% and 10%) were sol-gel prepared for bioactive and antibacterial modification of titanium. The gel powders calcined at 610 degrees C are mainly amorphous confirmed by x-ray diffraction, but small diffraction peaks of Ca3SiO5 and silver are detected. The film surface is porous with the pore size of similar to 200nm. Silver-rich sub-micro particles with sizes of 100-480nm are present at the surface of Ag-glass films. CaP phase, metallic silver and silica are detected by x-ray photoelectron spectroscopy. The mean apparent bonding strength of the films is as high as 21 +/- 1MPa measured by the pull-off test. The potentiodynamic polarization test shows that the coated samples have better corrosion resistance than the polished sample. The Ag-glass coatings and their wafer samples exhibit antibacterial activity against S.aureus. The coated samples are covered by apatite layer after soaked in the simulated body fluid for 2weeks, demonstrating their bioactivity.
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INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
ISSN: 1546-542X
Year: 2017
Issue: 6
Volume: 14
Page: 1117-1124
1 . 1 6 5
JCR@2017
1 . 9 6 8
JCR@2020
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:217
JCR Journal Grade:2
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 9
SCOPUS Cited Count: 15
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 10
Affiliated Colleges: