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https://hdl.handle.net/2440/74943
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Type: | Journal article |
Title: | Optical and mechanical characterization of novel cobalt-based metal oxide thin films synthesized using sol-gel dip-coating method |
Author: | Amri, A. Jiang, Z. Pryor, T. Yin, C. Xie, Z. Mondinos, N. |
Citation: | Surface and Coatings Technology, 2012; 207:367-374 |
Publisher: | Elsevier Science SA |
Issue Date: | 2012 |
ISSN: | 0257-8972 |
Statement of Responsibility: | Amun Amri, Zhong-Tao Jiang, Trevor Pryor, Chun-Yang Yin, Zonghan Xie, Nick Mondinos |
Abstract: | New cobalt-based metal oxide thin films (M xCo yO z with M=Mn, Cu, Ni) have been deposited on commercial aluminum and glass substrates using sol-gel dip-coating method. The as-deposited films were characterized by a wide range of complementary techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), spectrophotometry and nanoindentation techniques. A light absorption study for coatings on glass substrates within a wavelength range of 300-1100nm was also conducted. Topographical and morphological investigations showed the presence of nano-sized, grain-like particles in the copper-cobalt oxide coatings, which consequently had the roughest surface among the three coatings. All coatings on glass substrate exhibited higher absorption of ultraviolet (UV) light compared to visible light, while coatings on aluminum substrate generally had low reflectance (<50%) of UV light, moderate reflectance (<80%) of visible light and high reflectance (up to 100%) of infrared light. Implications of optical properties as a function of film thickness controlled by dip-heating cycles were discussed. The elastic modulus (E) and hardness (H) of thin film samples compared with stand-alone commercial aluminum substrate were also measured. © 2012 Elsevier B.V. |
Keywords: | Cobalt-based metal oxides Sol–gel dip-coating Optical and mechanical properties X-ray photoelectron spectroscopy Nanoindentation |
Rights: | © 2012 Elsevier B.V. All rights reserved. |
DOI: | 10.1016/j.surfcoat.2012.07.028 |
Published version: | http://dx.doi.org/10.1016/j.surfcoat.2012.07.028 |
Appears in Collections: | Aurora harvest 4 Materials Research Group publications Mechanical Engineering publications |
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