期刊
JOURNAL OF MAGNESIUM AND ALLOYS
卷 9, 期 3, 页码 910-926出版社
KEAI PUBLISHING LTD
DOI: 10.1016/j.jma.2020.10.002
关键词
ZM21; ZrO2 nanoparticle; PEO-EPD; Laser texturing; Corrosion resistance; L-929 cells
资金
- Science and Engineering Research Board (SERB), New Delhi [SR/S3/ME/0024/2011]
Zirconia (ZrO2) incorporated ceramic coatings were fabricated on biodegradable ZM21 Mg alloy by the PEO coupled with EPD process, followed by laser texturing to enhance corrosion resistance and cell growth. The fabricated samples showed better contact and response with fibroblast cells compared to the substrate, possibly due to the PEO coupled EPD process.
Zirconia (ZrO2) incorporated ceramic coatings were fabricated on biodegradable ZM21 Mg alloy by the PEO coupled with EPD process. Subsequently, the sample surface was modified by laser texturing to improve the corrosion resistance, roughness and cell proliferation and growth properties. The corrosion performance of the fabricated samples along with the substrate was studied by electrochemical measurements under simulated body fluid (SBF) environment. The cell direct contact assay was conducted for the substrate and fabricated samples using L-929 mouse fibroblast cells for 24 h. The phase contrast images of cell direct contact assay revealed that fabricated samples exhibited better contact and response with the fibroblast cells, compared to the substrate. The addition of nanoparticles in the PEO process, called PEO coupled EPD process, resulted in attaining a higher thickness and improved corrosion performance of the samples than the PEO coated samples. Among all the samples, laser surface textured PEO, and PEO-EPD coated samples unveiled enhanced corrosion resistance, cell growth, thereby enabling it as a suitable prototype for biodegradable implant applications. (C) 2020 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.
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