Paper Title:
Nb-NbN Cermet Film as Solar Selective Coating
  Abstract

A new cermet film Nb-NbN, deposited on the stainless steel substrate by direct reactive magnetron sputtering, was reported as solar selective absorptive coating. Some fundamental studies on microstructure and optical properties of the Nb-NbN cermet films were carried out by XRD, EDX, SEM and spectrophotometer. A solar absorptivity of 0.94 and a normal emissivity of 0.16 at room temperature were achieved for the coating. Thermal stability was investigated at 350°C and 500°C and it was observed that the absorptivity was changed in a range from 0.92 to 0.94 and the surface emissivity varied firstly from 0.16 to 0.14 and then increasing to 0.19 when the temperature was increased from room temperature to 350°C and up to 500°C.

  Info
Periodical
Advanced Materials Research (Volumes 26-28)
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
899-904
DOI
10.4028/www.scientific.net/AMR.26-28.899
Citation
C. Wang, X. K. Du, T. M. Wang, "Nb-NbN Cermet Film as Solar Selective Coating", Advanced Materials Research, Vols. 26-28, pp. 899-904, 2007
Online since
October 2007
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Price
$32.00
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