Electrochemical deposition of Ni-Fe alloys into porous alumina for solar selective absorbers

被引：11

作者：

Santibanez, A. ^{[1
]}

Herrera-Trejo, M. ^{[1
]}

Oliva, J. ^{[1
]}

Martinez, A. I. ^{[1
]}

机构：

[1] Cinvestav Saltillo, Av Ind Met 1062,Parque Ind, Ramos Arizpe 25900, Coahuila, Mexico

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2016年 / 100卷

关键词：

Solar thermal absorber; Electrodeposition; Porous alumina; Nickel; Iron; AC current; ANODIZED ALUMINUM; OXIDE; COATINGS; LAYER;

D O I：

10.1016/j.spmi.2016.10.066

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The morphological, structural and optical characterizations of Al/Al2O3/Ni-Fe cermet solar absorbers have been investigated. The X-ray diffraction patterns indicated the presence of Ni-Fe alloys with variable composition. However, the formation of Ni-Fe amorphous phases was detected for compositions as high as 73% of Fe. X-ray photoelectron spectroscopy measurements revealed the presence of superficial binary and ternary oxides such as NiO, Fe2O3, and NiFe2O4. Furthermore, the properties of solar absorptance and thermal emittance were calculated for the cermets. It was found that the presence of Fe decreased the solar absorptance of the cermets up to 5% and decreased the emittance up to 10%. However, an excessive content of Fe increases the emittance 5%. Finally, it was demonstrated that cermets containing Ni-Fe alloys can be useful to enhance the optical and spectral selectivity properties of solar absorbers. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：973 / 982

页数：10

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