Development and degradation behavior of protective multilayer coatings for aluminum reflectors for solar thermal applications
IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur
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| Title |
Development and degradation behavior of protective multilayer coatings for aluminum reflectors for solar thermal applications
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| Creator |
Mishra, Suman K
Kumar, V Tiwari, S K Mishra, T Angula, G Adhikari, S |
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| Subject |
Mechanical Engineering
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| Description |
The fabrication of multilayers Al-SiO2, Al-SiO2-TiO2, Al-Ni-Ag-SiO2, Al-Ni-Ag-SiO2-TiO2 on anodized aluminum sheet by the combination of physical vapor deposition sputtering and sol-gel coating process has been done. The multilayers of very high reflectivity (95% or more) could be developed on Al. The Al mirror reflectivity has been enhanced to 95% by a thin coating of Ag on aluminum in between the substrate and transparent and protective layers of SiO2 and SiO2-TiO2 The degradation behavior of these multilayers in accelerated weathering condition and under salt spray with different hours of exposure vis a vis reflectance is investigated. These coatings showed higher reflectance and sustenance in accelerated weathering and salt spray environment making it potential multilayered coating for solar thermal applications.
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| Publisher |
Elsevier
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| Date |
2016-11-30
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| Type |
Article
PeerReviewed |
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| Relation |
http://www.sciencedirect.com/science/article/pii/S0040609016306769
http://eprints.nmlindia.org/7516/ |
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| Identifier |
Mishra, Suman K and Kumar, V and Tiwari, S K and Mishra, T and Angula, G and Adhikari, S (2016) Development and degradation behavior of protective multilayer coatings for aluminum reflectors for solar thermal applications. Thin Solid Films, 619 (IF- 1.879). pp. 202-207.
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