Skip to main content
SpringerLink
Log in

Application of CuCoMnO x coat by sol gel technique on aluminum and copper substrates for solar absorber application

  • Published:
Journal of Coatings Technology and Research Aims and scope Submit manuscript

Abstract

Solar thermal heaters are used widely in domestic and industrial applications. The main part of solar thermal heaters is the absorber surface which must have a maximum absorptivity (α) and minimum emissivity (ε) of solar radiation. This is achieved by application of selective coating on the absorber surface. In the present work, solar selective CuCoMnO x spinel films are deposited by sol gel technique using a dip-coating technique on copper and aluminum sheets. The precursor’s ratio Co:Cu:Mn applied is 1:3:3. Different precursor molar ratios were combined with a fixed amount of solvents for the coating process. Process parameters such as withdrawal rate, heat treatment, and substrate materials on the coat characteristics and optical properties were studied. The coated metallic samples were heat treated at 450°C for 30 min in the case of aluminum and at 200°C at different times in the case of copper. Optical properties of the coatings, namely absorptivity (α) and emissivity (ε) were measured and the deposition process parameters were optimized in order to produce the maximum selectivity (α/ε) values. The deposition parameters were found to influence both the thickness and surface roughness of the coatings. As the coating thickness decreases, the absorptivity increases while the emissivity decreases irrespective of the substrate material. It was also observed from the results that when applying the coat on aluminum substrates, a maximum selectivity value of (α/ε) = 31 was realized while for the copper substrates a maximum value of (α/ε) = 81.8 was obtained. The deposited coatings were analyzed using SEM, XRD, and AFM.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12

Similar content being viewed by others

References

  1. Katumba, G, Olumekor, L, Forbes, A, Makiwa, G, Mwakikunga, B, Lu, J, Wackelgard, E, “Optical, Thermal and Structural Characteristics of Carbon Nanoparticles Embedded in ZnO and NiO as Selective Solar Absorbers.” Solar Energy Mater. Solar Cells, 92 1285–1292 (2008)

    Article  Google Scholar 

  2. Vince, J, Surca Vuk, A, Opara Krasovec, U, Orel, B, Kohl, M, Heck, M, “Solar Absorber Coatings Based on CoCuMnO x Spinels Prepared via the Sol-Gel Process: Structural and Optical Properties.” Solar Energy Mater. Solar Cells, 79 313–330 (2003)

    Article  Google Scholar 

  3. Suzer, S, Kadirgan, F, Sohmen, HM, “XPS Characterization of Co and Cr Pigmented Copper Solar Absorbers.” Solar Energy Mater. Solar Cells, 56 183–189 (1999)

    Article  Google Scholar 

  4. El Mahallawy, N, Shoeib, M, El Araby, I, “Effect of Electroplating Process Parameters on Optical Properties of Black Nickel Deposits.” Proc. of 1st International Surface Treatment Symposium, 15–18 June 2011, Istanbul, Turkey, p 66.

  5. El Mahallawy, N, Shoeib, M, Khalil, T, El Araby, I, Ali, Y, “Production and Characterization of Low Cost Solar Absorbers.” Proc. International Renewable Energy and Environment Conference 2011—IREEC 2011—24–26 June 2011, Kuala Lumpur, Malaysia, paper No 66 and Int. J. Chem. Environ. Eng., 12 (5), 322–327 (2011).

  6. Boström, T, Wäckelgård, E, Westin, G, “Solution-Chemical Derived Nickel-Alumina Coatings for Thermal Solar Absorbers.” Solar Energy, 74 497–503 (2003)

    Article  Google Scholar 

  7. Drasovean, R, Monteiro, R, Fortunato, E, Musat, V, “Optical Properties of Cobalt Oxide Films by a Dipping Sol-Gel Process.” J. Non-Cryst. Solids, 352 1479–1485 (2006)

    Article  Google Scholar 

  8. Kaluza, L, Orel, B, Drazic, G, Kohl, M, “Sol-Gel Derived CuCoMnO x Spinel Coatings for Solar Absorbers: Structural and Optical Properties.” Solar Energy Mater. Solar Cells, 70 187–201 (2001)

    Article  Google Scholar 

  9. Harizanov, OA, Gesheva, KA, Stefchev, PL, “Sol-Gel and CVD-Metal Oxide Coatings for Solar Energy Utilization.” Ceram. Int., 22 1–94 (1996)

    Article  Google Scholar 

  10. Selvakumar, N, Barshilia, HC, “Review of Physical Vapor Deposited (PVD) Spectrally Selective Coatings for Mid-and High-Temperature Solar Thermal Applications.” Solar Energy Mater. Solar Cells, 98 1–23 (2012)

    Article  Google Scholar 

  11. Belleville, P, “Functional Coatings: The Sol-Gel Approach.” C R Chim, 13 (1–2) 97–105 (2010)

    Article  Google Scholar 

  12. Barreraa, E, Huerta, L, Muhl, S, Avila, A, “Synthesis of Blackcobalt and Tin Oxide Films by the Sol-Gel Process: Surface and Optical Properties.” Solar Energy Mater. Solar Cells, 88 179–186 (2005)

    Article  Google Scholar 

  13. Gordon, J, Solar Energy, The State of The Art. James & James, London (2001)

    Google Scholar 

  14. Boström, T, Wäckelgård, E, Westin, G, “Solution-Chemical Derived Nickel-Alumina Coatings for Thermal Solar Absorbers.” Solar Energy, 74 (6) 497–503 (2003)

    Article  Google Scholar 

  15. Cathro, K, Constable, D, Solaga, T, “Silica Low-Reflection Coatings for Collector Covers by a Dip-Coating Process.” Solar Energy, 32 (5) 573–579 (1984)

    Article  Google Scholar 

  16. Lundh, M, Blom, T, Wäckelgård, E, “Antireflection Treatment of Thickness Sensitive Spectrally Selective (TSSS) Paints for Thermal Solar Absorbers.” Solar Energy, 84 (1) 124–129 (2010)

    Article  Google Scholar 

  17. Bayon, R, Vicente, G, Maffiotte, C, Morales, A, “Preparation of Selective Absorbers Based on CuMn Spinels by Dip-Coating Method.” Renewable Energy, 33 348–353 (2008)

    Article  Google Scholar 

  18. Bayon, R, Vicente, G, Morales, A, “Durabilty Tests and Up-Scaling of Selective Absorbers Based on Copper-Manganese Oxides Deposited by Dip-Coating.” Solar Energy Mater. Solar Cells, 94 998–1004 (2010)

    Article  Google Scholar 

  19. Joly, M, Antonetti, Y, Python, M, Gonzalez, M, Gascou, T, Scartezzini, J, Schueler, A, “Novel Black Selective Coating for Tubular Solar Absorbers Based on a Sol-Gel Method.” Solar Energy, 94 233–239 (2013)

    Article  Google Scholar 

  20. El Mahallawy, N, Shoeib, M, Ali, Y, “Effect of Deposition Technique on Black Nickel Selective Coat Characteristics.” (to be published)

  21. Duffie, J, Beckman, W, Solar Engineering of Thermal Processes, Chap. 4, 3rd ed. Wiley, New York (2005)

    Google Scholar 

  22. Krechetnikov, R, Homsy, GM, “Experimental Study of Substrate Roughness and Surfactant Effects on the Landau-Levich Law.” Phys. Fluids, 17 102–108 (2005)

    Google Scholar 

  23. Shashikala, AR, Sharma, AK, Bhandari, DR, “Solar Selective Black Nickel-Cobalt Coatings on Aluminum Alloys.” Solar Energy Mater. Solar Cells, 91 629–635 (2007)

    Article  Google Scholar 

  24. Amr, A, Jiang, Z-T, Pryor, T, Yin, C-Y, Xie, Z, Mondinos, N, “Optical and Mechanical Characterization of Novel Cobalt-Based Metal Oxide Thin Films Synthesized Using Sol-Gel Dip-Coating Method.” Surf. Coatings Technol., 207 367–374 (2012)

    Article  Google Scholar 

  25. Haynes, WM, CRC Handbook of Chemistry and Physics, Section 19, 94th ed. Chemical Rubber Publishing Co, Cleveland, OH (2013–2014)

    Google Scholar 

  26. Amria, A, Duan, X, Yin, C-Y, Jiang, Z-T, Rahman, MM, Pryor, T, “Solar Absorptance of Copper-Cobalt Oxide Thin Film Coatings with Nano-size, Grain-Like Morphology: Optimization and Synchrotron Radiation XPS Studies.” Appl. Surf. Sci., 275 127–135 (2013)

    Article  Google Scholar 

  27. Hamid, M, Tahir, AA, Mazhar, M, Molloy, KC, Kociok-Köhn, G, “Copper-Cobalt Heterobimetallic Ceramic Oxide Thin Film Deposition: Synthesis, Characterization and Application of Precursor.” Inorg. Chem. Commun., 11 1159–1161 (2008)

    Article  Google Scholar 

  28. Shaheen, WM, Alib, AA, “Characterization of Solid-Solid Interactions and Physicochemical Properties of Copper-Cobalt Mixed Oxides and Cu x Co3−x O4 Spinels.” Mater. Res. Bull., 36 1703–1716 (2001)

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Design and Production Engineering Department, Faculty of Engineering, Ain Shams University, Abasia, Cairo, Egypt

    Nahed El Mahallawy

  2. Central Metallurgical Research Center, ElTebbin, Helwan, Cairo, Egypt

    Madiha Shoeib

  3. The German University in Cairo, New Cairo City - Al Tagamoa Al Khames, Cairo, Egypt

    Nahed El Mahallawy & Yehia Ali

Authors
  1. Nahed El Mahallawy
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Madiha Shoeib
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Yehia Ali
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Nahed El Mahallawy.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

El Mahallawy, N., Shoeib, M. & Ali, Y. Application of CuCoMnO x coat by sol gel technique on aluminum and copper substrates for solar absorber application. J Coat Technol Res 11, 979–991 (2014). https://doi.org/10.1007/s11998-014-9592-9

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11998-014-9592-9

Keywords

Search

Navigation