کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5355770 | 1503629 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of indium (In) on corrosion and passivity of a beta-type Ti-Nb alloy in Ringer's solution
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Beta-phase Ti-Nb-based alloys are considered as new generation of biomaterials with improved mechanical compatibility for load-bearing implant applications. Small homogeneously dissolved In additions have a positive impact on the elastic properties of beta-type Ti-40Nb. For (Ti-40Nb)-4In the best match between low Young's modulus, high elastic energy and appropriate strength was achieved. In the present study the effect of In addition to Ti-40Nb on the corrosion and passivation behavior in Ringer's solution is assessed by means of potentiodynamic polarization, ICP-OES metal release analysis, XPS and ToF-SIMS for passive film characterization. Like Ti-40Nb, (Ti-40Nb)-4In exhibits very low corrosion rates (icorr = 0.1-0.2 μA/cm2) and stable anodic passivity (ipass = 3-4 μA/cm2). Small In additions do not have a detectable effect on the anodic response of the alloy. For both beta-phase alloys metal release rates are below the quantification limits of ICP-OES. Their strong passivating nature is governed by the formation of thin barrier-type Ti- and Nb-oxide films. Passive films on (Ti-40Nb)-4In surfaces which were formed during OCP exposure or anodic polarization comprise oxidized In species (In2O3, In(OH3)). From the viewpoint of corrosion stability (Ti-40Nb)-4In appears to be suitable for implant applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 335, 30 April 2015, Pages 213-222
Journal: Applied Surface Science - Volume 335, 30 April 2015, Pages 213-222
نویسندگان
Annett Gebert, Steffen Oswald, Arne Helth, Andrea Voss, Petre Flaviu Gostin, Marcus Rohnke, Jürgen Janek, Mariana Calin, Jürgen Eckert,