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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/5697

Title: Cr/alpha-Cr2O3 monodispersed spherical core-shell particles based solar absorbers
Authors: Khamlich, S
Nuru, ZY
Nemutudi, R
Nemraoui, O
Roro, KT
Mongwaketsi, N
McCrindle, R
Cingo, N
Maaza, M
Keywords: Solar absorbers
Particles size
Solar light absorption
Cr/alpha-Cr2O3 spherical particles
Issue Date: Jul-2011
Publisher: UNISA
Citation: Khamlich, S, Nuru, ZY, Nemutudi, R, Nemraoui, O, Roro, KT, Mongwaketsi, N, McCrindle, R, Cingo, N and Maaza, M. Cr/alpha-Cr2O3 monodispersed spherical core-shell particles based solar absorbers. 56th Annual Conference of the South African Institute of Physics 2011, St George Hotel, Pretoria, 12-15 July 2011, pp 140-145
Series/Report no.: Workflow;8629
Abstract: Monodispersed spherical core-shell particles of Cr/alpha-Cr2O3 cermet ACG coatings investigated within this contribution could be successfully employed in thermal converters. Their selectivity depends on their chemical, physical and structural characteristics and related optical properties like reflectance, emittance, solar light absorption, or absorptance and transmittance. Parameters such as particles size, aging-time and substrate roughening will greatly influence their relevant optical properties as reported. The coated Cr/alpha-Cr2O3 spherical particles on rough copper substrates by a simple self-assembly-like method were characterized by scanning electron microscopy, energy dispersive spectrometry, Raman spectroscopy, and diffuse reflectance UV-VIS-NIR spectroscopy. The samples aged for more than 40h at 75 degrees C exhibit the targeted high absorbing optical characteristic “Black chrome” while those aged for smaller or equal to 40h show a significant high diffuse reflectance.
Description: 56th Annual Conference of the South African Institute of Physics 2011, St George Hotel, Pretoria, 12-15 July 2011
URI: http://www.saip.org.za/images/stories/documents/SAIP_Proceedings/SAIP2011_Proceedings.djvu
http://hdl.handle.net/10204/5697
ISBN: 978-1-86888-688-3
Appears in Collections:Nanotechnology
Rural infrastructure and services
General science, engineering & technology

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