کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8026796 | 1517610 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrothermal biomimetic modification of microarc oxidized magnesium alloy for enhanced corrosion resistance and deposition behaviors in SBF
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Hydrothermal biomimetic modification of microarc oxidized magnesium alloy for enhanced corrosion resistance and deposition behaviors in SBF Hydrothermal biomimetic modification of microarc oxidized magnesium alloy for enhanced corrosion resistance and deposition behaviors in SBF](/preview/png/8026796.png)
چکیده انگلیسی
Bioactive composite coatings with a microarc oxidation (MAO) bottom layer and a biomimetic top hydrothermal layer were developed on an AZ31B magnesium alloy by combined MAO and hydrothermal treatment. The composition and microstructure of the coatings were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Potentiodynamic polarization and soaking test in simulated body fluid (SBF) were used to evaluate the biodegradation and bioactivity of coated magnesium. The results show that the bioactive top hydrothermal layer containing CaHPO4, HA and Ca3(PO4)2 grows on a 10 μm thick MAO bottom layer. The corrosion current of samples with MAO-hydrothermal duplex layers is reduced to 4.780 Ã 10â 6 A cmâ 2, the corrosion potential is increased to â 0.92 V. The sealing pore effect of the top hydrothermal layer enabled the MAO bottom layer to obtain a significantly improved corrosion resistance property. The MAO-hydrothermal sample had a weight increase of 14.52 mg cmâ 2 compared to 24.7 mg cmâ 2 weight loss for the MAO bottom layer after 28 days, due to the CaP compound deposition induced by the top hydrothermal surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 269, 15 May 2015, Pages 183-190
Journal: Surface and Coatings Technology - Volume 269, 15 May 2015, Pages 183-190
نویسندگان
J.W. Guo, S.Y. Sun, Y.M. Wang, Y. Zhou, D.Q. Wei, D.C. Jia,