Synthesis, microstructure and biodegradation behavior of nano-Si and nano-ZnO/Si coatings on a Mg/HA/TiO2/MgO nanocomposite
In this study, a successful synthesis of nano-Si single-layer and nano-ZnO/Si double-layer coatings on Mg/HA/TiO2/MgO nanocomposite using radio frequency magnetron sputtering was investigated by X-ray diffraction, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, transmi...
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my.utm.588752021-08-08T08:57:46Z http://eprints.utm.my/id/eprint/58875/ Synthesis, microstructure and biodegradation behavior of nano-Si and nano-ZnO/Si coatings on a Mg/HA/TiO2/MgO nanocomposite Khalajabadi, Shahrouz Zamani Abdul Kadir, Mohammed Rafiq Izman, S. Samavati, Alireza R. Othaman, Zulkafli TJ Mechanical engineering and machinery In this study, a successful synthesis of nano-Si single-layer and nano-ZnO/Si double-layer coatings on Mg/HA/TiO2/MgO nanocomposite using radio frequency magnetron sputtering was investigated by X-ray diffraction, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, transmission electron microscopy and atomic force microscopy. The double-layered ZnO/Si nano-composite coating consisted of ZnO nanospheres with an average particle size of 28 nm as the outer layer (~0.6-µm-thick, sputtering pressure of 0.16 Pa) and the columnar microstructure of Si with an average particle size of 32 nm in length and 21 nm in width as the inner layer (~1.1-µm-thick, sputtering pressure of 0.24 Pa). Microstructural analysis reveals little surface damage after ZnO/Si coatings initially and after 168 h immersion in simulated body fluid, corrosion protective products including Mg(OH)2, Ca10(PO4)6(OH)2 and carbonate ions are formed on the uncoated and coated samples. A significant increase in the corrosion resistance (~2.55 kO cm2) of the nano-ZnO/Si-coated sample was observed in simulated body fluid compared to the Si-only coated samples (~2.17 kO cm2) and the uncoated samples (~0.14 kO cm2). Hydrogen evolution studies showed that the nano-ZnO/Si-coated sample (1.07 ml/cm2/day) had a lower degradation rate than the Si-only coated sample (2.17 ml/cm2/day) and uncoated sample (4.42 ml/cm2/day). Taylor and Francis Inc. 2015 Article PeerReviewed Khalajabadi, Shahrouz Zamani and Abdul Kadir, Mohammed Rafiq and Izman, S. and Samavati, Alireza R. and Othaman, Zulkafli (2015) Synthesis, microstructure and biodegradation behavior of nano-Si and nano-ZnO/Si coatings on a Mg/HA/TiO2/MgO nanocomposite. Ceramics International, 41 (9). pp. 11346-11358. ISSN 2728-8421 http://dx.doi.org/10.1016/j.ceramint.2015.05.093 |
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TJ Mechanical engineering and machinery Khalajabadi, Shahrouz Zamani Abdul Kadir, Mohammed Rafiq Izman, S. Samavati, Alireza R. Othaman, Zulkafli Synthesis, microstructure and biodegradation behavior of nano-Si and nano-ZnO/Si coatings on a Mg/HA/TiO2/MgO nanocomposite |
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In this study, a successful synthesis of nano-Si single-layer and nano-ZnO/Si double-layer coatings on Mg/HA/TiO2/MgO nanocomposite using radio frequency magnetron sputtering was investigated by X-ray diffraction, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, transmission electron microscopy and atomic force microscopy. The double-layered ZnO/Si nano-composite coating consisted of ZnO nanospheres with an average particle size of 28 nm as the outer layer (~0.6-µm-thick, sputtering pressure of 0.16 Pa) and the columnar microstructure of Si with an average particle size of 32 nm in length and 21 nm in width as the inner layer (~1.1-µm-thick, sputtering pressure of 0.24 Pa). Microstructural analysis reveals little surface damage after ZnO/Si coatings initially and after 168 h immersion in simulated body fluid, corrosion protective products including Mg(OH)2, Ca10(PO4)6(OH)2 and carbonate ions are formed on the uncoated and coated samples. A significant increase in the corrosion resistance (~2.55 kO cm2) of the nano-ZnO/Si-coated sample was observed in simulated body fluid compared to the Si-only coated samples (~2.17 kO cm2) and the uncoated samples (~0.14 kO cm2). Hydrogen evolution studies showed that the nano-ZnO/Si-coated sample (1.07 ml/cm2/day) had a lower degradation rate than the Si-only coated sample (2.17 ml/cm2/day) and uncoated sample (4.42 ml/cm2/day). |
format |
Article |
author |
Khalajabadi, Shahrouz Zamani Abdul Kadir, Mohammed Rafiq Izman, S. Samavati, Alireza R. Othaman, Zulkafli |
author_facet |
Khalajabadi, Shahrouz Zamani Abdul Kadir, Mohammed Rafiq Izman, S. Samavati, Alireza R. Othaman, Zulkafli |
author_sort |
Khalajabadi, Shahrouz Zamani |
title |
Synthesis, microstructure and biodegradation behavior of nano-Si and nano-ZnO/Si coatings on a Mg/HA/TiO2/MgO nanocomposite |
title_short |
Synthesis, microstructure and biodegradation behavior of nano-Si and nano-ZnO/Si coatings on a Mg/HA/TiO2/MgO nanocomposite |
title_full |
Synthesis, microstructure and biodegradation behavior of nano-Si and nano-ZnO/Si coatings on a Mg/HA/TiO2/MgO nanocomposite |
title_fullStr |
Synthesis, microstructure and biodegradation behavior of nano-Si and nano-ZnO/Si coatings on a Mg/HA/TiO2/MgO nanocomposite |
title_full_unstemmed |
Synthesis, microstructure and biodegradation behavior of nano-Si and nano-ZnO/Si coatings on a Mg/HA/TiO2/MgO nanocomposite |
title_sort |
synthesis, microstructure and biodegradation behavior of nano-si and nano-zno/si coatings on a mg/ha/tio2/mgo nanocomposite |
publisher |
Taylor and Francis Inc. |
publishDate |
2015 |
url |
http://eprints.utm.my/id/eprint/58875/ http://dx.doi.org/10.1016/j.ceramint.2015.05.093 |
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1707765848842698752 |