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AKE: Arbeitskreis Energie
AKE 1: Innovative Contributions for the Energy System Transformation
AKE 1.7: Vortrag
Montag, 10. März 2025, 16:15–16:30, HS HISKP
remarkable impact on the structural, optical properties and solar absorbent of ZnO doped into CrNi black coatings — Hanaa Soliman1, Abdelsalam Makhlouf2, and •Diaa Rayan1,3 — 1Central Metallurgical Research and Development Institute (CMRDI), P.O. Box: 87 Helwan, 11421, Egypt — 2Engineering, Metallurgy, Coatings and Corrosion Consultancy (EMC3) LLC. Connecticut, USA — 3Department of Physics, Deraya University, New Minya, Minya, Egypt
Renewable energy is one of the major global challenges towards a clean environment. In solar collectors, high absorption with low thermal emittance represents the main performance parameter during the characterization of the absorber films. This article provides an in-depth study of the co-deposition of Cr and Ni-doped by ZnO coatings and their influence on surface protection correlating it with the absorption of the produced surfaces. Results showed that Cr+Ni+ZnO composite film on Cu substrate outperformed traditional Cr film in terms of surface smoothness, adhesion, corrosion resistance, bending resistance in addition to high solar absorption. Precisely, ZnO inserted into the Cr7Ni3 phase is the key for dual-performance high absorbent and resistant film of CrNi.
Keywords: CrNi black coatings; ZnO doped; structural; optical properties; solar absorbent