Growth, characterization and performance evaluation of Ti/AlTiN/AlTiON/AlTiO high temperature spectrally selective coatings for solar thermal power applications

We describe the growth, characterization and performance evaluation of a multilayer solar selective coating useful for solar thermal power generation. The solar selective coating of the present work consists of Ti/chrome interlayer, two absorber layers of AlTiN and AlTiON, and an anti-reflection layer of AlTiO. All the layers have been deposited using reactive pulsed direct current sputtering of Ti and Al targets in Ar+N2, Ar+N2+O2 and Ar+O2 plasmas, respectively. A large number of analytical tools have been used to characterize the structural and optical properties of the absorber coating. The optimized coating exhibited an absorptance of 0.930 and an emittance of 0.16–0.17 on stainless steel substrates and an absorptance of 0.933 and an emittance of 0.07 on copper substrates. The absorber coating displayed improved adhesion, UV stability, corrosion resistance and thermal stability in air and vacuum up to 350 and 450 °C, respectively under cyclic heating condition for more than 1000 hrs.

[1]  D. Pai,et al.  Mechanical and tribological properties of sputter deposited nanostructured Cr–WS2 solid lubricant coatings , 2010 .

[2]  Qi-Chu Zhang.  Metal-AlN cermet solar selective coatings deposited by direct current magnetron sputtering technology , 1998 .

[3]  H. Barshilia,et al.  TiAlN∕TiAlON∕Si3N4 tandem absorber for high temperature solar selective applications , 2006 .

[4]  G. L. Harding,et al.  Progress in the materials science of all-glass evacuated collectors , 1984 .

[5]  R. C. Weast.  CRC Handbook of Chemistry and Physics , 1973 .

[6]  H. Barshilia,et al.  Optical properties and thermal stability of TiAlN/AlON tandem absorber prepared by reactive DC/RF magnetron sputtering , 2008 .

[7]  H. Barshilia,et al.  Raman spectroscopy studies on the thermal stability of TiN, crN, TiAlN coatings and nanolayered TiN/CrN, TiAlN/CrN multilayer coatings , 2004 .

[8]  M. Arndt,et al.  Performance of new AlTiN coatings in dry and high speed cutting , 2003 .

[9]  H. Barshilia,et al.  Deposition and characterization of TiAlN/TiAlON/Si3N4 tandem absorbers prepared using reactive direct current magnetron sputtering , 2008 .

[10]  H. Barshilia,et al.  Thermal stability of TiAlN∕TiAlON∕Si3N4 tandem absorbers prepared by reactive direct current magnetron sputtering , 2007 .

[11]  H. Barshilia,et al.  Electrochemical behavior of single layer CrN, TiN, TiAlN coatings and nanolayered TiAlN/CrN multilayer coatings prepared by reactive direct current magnetron sputtering , 2006 .

[12]  M. Addonizio,et al.  Fabrication and optimisation of highly efficient cermet-based spectrally selective coatings for high operating temperature , 2009 .

[13]  A. Berghaus,et al.  Characterisation of CVD-tungsten–alumina cermets for high-temperature selective absorbers , 1998 .

[14]  Lijun Jiang,et al.  Optimization design of Ti0.5Al0.5N/Ti0.25Al0.75N/AlN coating used for solar selective applications , 2011 .

[15]  Shumao Wang,et al.  Preparation and thermal stability on non-vacuum high temperature solar selective absorbing coatings , 2009 .

[16]  H. Barshilia,et al.  Deposition of TiAlN coatings using reactive bipolar-pulsed direct current unbalanced magnetron sputtering , 2008 .

[17]  Y. Birol,et al.  Thermal cycling of AlTiN- and AlTiON-coated hot work tool steels at elevated temperatures , 2011 .

[18]  M. Addonizio,et al.  Stability of W-Al2O3 cermet based solar coating for receiver tube operating at high temperature , 2010 .

[19]  S. Veldhuis,et al.  Oxidation post-treatment of hard AlTiN coating for machining of hardened steels , 2009 .

[20]  G. Fox-Rabinovich,et al.  Hard AlTiN, AlCrN PVD coatings for machining of austenitic stainless steel , 2006 .

[21]  Qi-Chu Zhang.  Direct current magnetron sputtered W–AlN cermet solar absorber films , 1997 .

[22]  H. Barshilia,et al.  Review of physical vapor deposited (PVD) spectrally selective coatings for mid- and high-temperature solar thermal applications , 2012 .

[23]  Michael Lanxner,et al.  Solar selective absorber coating for high service temperatures, produced by plasma sputtering , 1990, Other Conferences.

[24]  Da-yung Wang,et al.  Characterization of nanocrystalline AlTiN coatings synthesized by a cathodic-arc deposition process , 2007 .

[25]  H. Barshilia,et al.  Spectroscopic ellipsometric characterization of TiAlN/TiAlON/Si3N4 tandem absorber for solar selective applications , 2008 .

[26]  Qi-Chu Zhang,et al.  Recent progress in high-temperature solar selective coatings , 2000 .