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Thermal stability of multilayered Pt-Al2O3 nanocoatings for high temperature CSP systems

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dc.contributor.author Nuru, ZY
dc.contributor.author Kotsedi, L
dc.contributor.author Arendse, CJ
dc.contributor.author Motaung, D
dc.contributor.author Mwakikunga, Bonex W
dc.contributor.author Roro, Kittessa T
dc.contributor.author Maaza, M
dc.date.accessioned 2016-06-27T08:37:14Z
dc.date.available 2016-06-27T08:37:14Z
dc.date.issued 2015-10
dc.identifier.citation Nuru, Z.Y. Kotsedi, L. Arendse, C.J. Motaung, D. Mwakikunga, B. Roro, K.T. and Maaza, M. 2015. Thermal stability of multilayered Pt-Al2O3 nanocoatings for high temperature CSP systems. Vacuum, 120(Part B), 115-120 en_US
dc.identifier.issn 0042-207X
dc.identifier.uri http://www.sciencedirect.com/science/article/pii/S0042207X15000445
dc.identifier.uri http://hdl.handle.net/10204/8572
dc.description Copyright: 2015 Elsevier. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version of the work is published in Vacuum, 120(Part B), 115-120 en_US
dc.description.abstract This contribution reports on the effect of thermal annealing on sputtered Pt–Al(sub2)O(sub3) multilayered selective solar absorber coatings deposited onto stainless steel substrates with a Mo IR reflecting buffer layer. The Pt–Al(sub2)O(sub3) cermet nanocoatings were annealed at different temperatures for different durations in vacuum. The spectral selectivity of the optimised Pt–Al(sub2)O(sub3) was found to be thermally stable up to 900 °C in vacuum for 2 h with solar absorptance of 0.944 and thermal emittance of 0.11. At 1000 °C, its spectral selectivity decreased significantly to 0.892/0.13, which is attributed to the inter-diffusion between the layers, and formation of -Fe(sub3)Mo(sub3)C phase. Annealing the Pt–Al(sub2)O(sub3) nanocoatings for long term showed that the cermet nanocoatings were thermally stable up to 800 °C in vacuum for 24 h having spectral selectivity of 0.938/0.10. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow;16579
dc.subject Concentrated solar power en_US
dc.subject Selective solar absorbers en_US
dc.subject Cermet en_US
dc.subject Thermal stability en_US
dc.subject Platinum en_US
dc.subject Alumina en_US
dc.title Thermal stability of multilayered Pt-Al2O3 nanocoatings for high temperature CSP systems en_US
dc.type Article en_US
dc.identifier.apacitation Nuru, Z., Kotsedi, L., Arendse, C., Motaung, D., Mwakikunga, B. W., Roro, K. T., & Maaza, M. (2015). Thermal stability of multilayered Pt-Al2O3 nanocoatings for high temperature CSP systems. http://hdl.handle.net/10204/8572 en_ZA
dc.identifier.chicagocitation Nuru, ZY, L Kotsedi, CJ Arendse, D Motaung, Bonex W Mwakikunga, Kittessa T Roro, and M Maaza "Thermal stability of multilayered Pt-Al2O3 nanocoatings for high temperature CSP systems." (2015) http://hdl.handle.net/10204/8572 en_ZA
dc.identifier.vancouvercitation Nuru Z, Kotsedi L, Arendse C, Motaung D, Mwakikunga BW, Roro KT, et al. Thermal stability of multilayered Pt-Al2O3 nanocoatings for high temperature CSP systems. 2015; http://hdl.handle.net/10204/8572. en_ZA
dc.identifier.ris TY - Article AU - Nuru, ZY AU - Kotsedi, L AU - Arendse, CJ AU - Motaung, D AU - Mwakikunga, Bonex W AU - Roro, Kittessa T AU - Maaza, M AB - This contribution reports on the effect of thermal annealing on sputtered Pt–Al(sub2)O(sub3) multilayered selective solar absorber coatings deposited onto stainless steel substrates with a Mo IR reflecting buffer layer. The Pt–Al(sub2)O(sub3) cermet nanocoatings were annealed at different temperatures for different durations in vacuum. The spectral selectivity of the optimised Pt–Al(sub2)O(sub3) was found to be thermally stable up to 900 °C in vacuum for 2 h with solar absorptance of 0.944 and thermal emittance of 0.11. At 1000 °C, its spectral selectivity decreased significantly to 0.892/0.13, which is attributed to the inter-diffusion between the layers, and formation of -Fe(sub3)Mo(sub3)C phase. Annealing the Pt–Al(sub2)O(sub3) nanocoatings for long term showed that the cermet nanocoatings were thermally stable up to 800 °C in vacuum for 24 h having spectral selectivity of 0.938/0.10. DA - 2015-10 DB - ResearchSpace DP - CSIR KW - Concentrated solar power KW - Selective solar absorbers KW - Cermet KW - Thermal stability KW - Platinum KW - Alumina LK - https://researchspace.csir.co.za PY - 2015 SM - 0042-207X T1 - Thermal stability of multilayered Pt-Al2O3 nanocoatings for high temperature CSP systems TI - Thermal stability of multilayered Pt-Al2O3 nanocoatings for high temperature CSP systems UR - http://hdl.handle.net/10204/8572 ER - en_ZA


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