2 results listed
in this study copper nanoparticle (CuNP) deposited on
the 316L stainless steel (316L SS) by physical vapour deposition
(PVD) technique. The development of thermal conductivity is
essential for thermal application, especially in solar energy
applications. The distinctive method transient plane source (TPS)
for measuring the thermal conductivity of the copper thin film was
used in comparison with the 316L SS base metal, while the
ambient conditions including heating power, measurement time
and sample temperature were 6.9 W, 5 Sec and 34 o C
respectively, were employed in this test. The results show that the
prepared film by a thermal vacuum evaporation technique has an
enchantment on the improvement of physical properties like
absorption and thermal conductivity in comparison with parent
316L SS substrate. It was noted that the thermal conductivity
improved dramatically with 39.82 % comparing with 316L SS
substrate. Structural properties of thin film layer achieved have
been analyzed by (XRD). The other characterization likes surface
morphology has been investigated by using SEM, FESEM, and
AFM. This improvement from an economical energy point of view
for the 316L SS-CuNP enhanced the heat gaining process of solar
collector system considerably with high efficiency.
International Iron & Steel Symposium
UDCS
Ahmed S. Abbas
Mohammed J. Kadhim
Khalid A. Sukkar
Stainless steel - copper nanoparticles selective
surfaces were deposited by a thermal evaporation technique.
Stainless steel type 316L (316L SS) was chosen as a substrate,
while the copper nanoparticles (CuNP) were deposited on 316L
SS by physical vapor deposition (PVD). The absorption and
emissivity were also measured in the UV-Vis and IR regions
respectively. The results show that the prepared film by PVD has
an enchantment in optical properties. A solar absorption of 0.78-
0.94 and thermal emissivity of 0.01-0.05 at room temperature has
been achieved for the 316L SS-CuNP solar selective coatings.
Also, the results displayed that the presence of copper
nanoparticles combined with 316L SS has a better performance
than 316L SS alone. The absorption and the emissivity have
been an improvement; in addition to a good thermal stability
have been obtained. The improvement of the solar absorber
using CuNP combined with 316L SS was found to be better than
CuNP singly. Other characteristics like structure and phases of
coating layers achieve investigated using XRD in another side,
topographic was examined via AFM and SEM.
International Iron & Steel Symposium
UDCS
Ahmed S. Abbas
Mohammed J. Kadhim
Khalid A. Sukkar