Journal ArticleDOI
Study on the changes of emissivity of basic copper carbonate in the decomposition process
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TLDR
In this article, the spectral emissivity of basic copper carbonate (Cu2(OH)2CO3) was measured by a Fourier Transform Infrared (FTIR) spectrometer in the wavelength range of 5-20μm during the heating process, and the integral emissivities was calculated to study the effect of decomposition on emissiveness.About:
This article is published in International Journal of Heat and Mass Transfer.The article was published on 2019-08-01. It has received 4 citations till now. The article focuses on the topics: Emissivity.read more
Citations
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Thermal Radiative Copper Oxide Layer for Enhancing Heat Dissipation of Metal Surface.
TL;DR: In this paper, the heat treatment formed a nanoporous oxide layer containing CuO and Cu2O, which has a dark blackish color and therefore increased the thermal emissivity of the surface.
Journal ArticleDOI
Phosphorescence quenching study of Cu(II)-ions-induced Mn-doped ZnS quantum dots revealed by intensity- and lifetime-resolved spectroscopy
Ruixiang Wu,Jingjing Luo,Xiaojun Guo,Xiaoshuai Wang,Zehui Ma,Bin Li,Liu-Yong Cheng,Xiangyang Miao +7 more
TL;DR: In this paper, an intensity and lifetime-resolved spectroscopy was developed to reveal the phosphorescence quenching of Cu2+-induced Mn-doped ZnS QDs.
Journal ArticleDOI
Effects of Anodizing Conditions on Thermal Properties of Al 20XX Alloys for Aircraft
TL;DR: In this paper, anodizing was applied to improve the heat dissipation performance of aluminum (Al) alloys, by forming an oxide layer, such that they could be employed in aerospace applications.
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Fast Emissivity Measuring Apparatus With Adjustable Focusing and Field Calibration
TL;DR: In this paper , a fast emissivity measuring apparatus in the range of 1.4-2.5 µm with adjustable focusing and field calibration has been developed for aluminum profile casting or molten-salt monitoring.
References
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Journal ArticleDOI
Modeling the effects of surface roughness on the emissivity of aluminum alloys
Chang Da Wen,Issam Mudawar +1 more
TL;DR: In this article, the relationship between the emissivity of aluminum alloy surfaces and surface roughness is explored, and two methods are discussed which yield good overall predictions of rough surfaces.
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Infrared study of some synthetic phases of malachite (Cu2(OH)2CO3)-hydrozincite (Zn5(OH)6(CO3)2) series.
TL;DR: The hydrogen bonds in hydrozincite are stronger as compared with those in malachite, irrespective of both the larger hydrogen bond lengths and the weaker Zn-O interactions, due to the higher hydrogen bond acceptor strength of the non-coordinated oxygen atom and the formation of bifurcated hydrogen bonds.
Journal ArticleDOI
A spectroscopic method to measure the spectral emissivity of semi-transparent materials up to high temperature
TL;DR: In this paper, a spectroscopic method to measure directional spectral emissivity for homogeneous and heterogeneous semi-transparent materials, giving access to a large spectral 10-12'000 cm−1 range and to temperatures lying between 600 and 3000 K is reported.
Journal ArticleDOI
Hydrogen bonding in basic copper salts: a spectroscopic study of malachite, Cu2(OH)2CO3, and brochantite, Cu4(OH)6SO4
M. Schmidt,H. D. Lutz +1 more
TL;DR: In this article, the infrared and Raman spectra of the basic copper salts malachite, Cu2(OH)2CO3, and brochantite, as well as of deuterated and 13C substituted samples are presented and discussed in terms of group theory and the hydrogen bonds present.
Journal ArticleDOI
Effect of thermal treatment on physicochemical properties of pure and mixed manganese carbonate and basic copper carbonate
W.M. Shaheen,M.M. Selim +1 more
TL;DR: In this article, a series of pure and mixed Mn and Cu oxides were prepared by calcination of MnCO 3 and CuCO 3 ·Cu(OH) 2 at different temperatures, (250, 500, 750 and 1000°C) for 4h in air.