High-temperature tolerance in WTi-Al2O3 cermet-based solar selective absorbing coatings with low thermal emissivity

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	High-temperature tolerance in WTi-Al2O3 cermet-based solar selective absorbing coatings with low thermal emissivity
	Wang, Xiaoyu; Gao, Junhua; Hu, Haibo; Zhang, Hongliang; Liang, Lingyan; Javaid, Kashif; Fei Zhuge; Cao, Hongtao; Wang, Le
刊名	NANO ENERGY
	2017
卷号	37 页码:232-247
ISSN号	2211-2855
英文摘要	Cermet-based solar selective absorbing coatings are widely used, however, the long-term thermal instability and pretty high infrared emissivity at high temperatures (> 550 degrees C) are still challenging issues to be addressed, which essentially lies in suppressing the growing up and agglomeration behaviors of metal nanoparticles (NPs) and maintaining the interface integrity in the multi-layer stacked structure. Herein, we develop and explore WTi-Al2O3 cermet-based absorbing coatings, demonstrating a solar absorptance of similar to 93% and a very low thermal emissivity of 10.3% @ 500 degrees C even after annealing at 600 degrees C for 840 h in vacuum. It is revealed that the surface segregation of solute Ti atoms from the parent alloyed NPs and their partial oxidation to form protective layer restrain outward diffusion of W element, agglomeration of NPs, and interface structure degradation, in favor of enhancing the thermal tolerance of the coatings. These results suggest that the WTi-Al2O3 based absorbing coating is a good candidate for high-temperature solar thermal conversion.
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/13745]
专题	2017专题
推荐引用方式 GB/T 7714	Wang, Xiaoyu,Gao, Junhua,Hu, Haibo,et al. High-temperature tolerance in WTi-Al2O3 cermet-based solar selective absorbing coatings with low thermal emissivity[J]. NANO ENERGY,2017,37:232-247.
APA	Wang, Xiaoyu.,Gao, Junhua.,Hu, Haibo.,Zhang, Hongliang.,Liang, Lingyan.,...&Wang, Le.(2017).High-temperature tolerance in WTi-Al2O3 cermet-based solar selective absorbing coatings with low thermal emissivity.NANO ENERGY,37,232-247.
MLA	Wang, Xiaoyu,et al."High-temperature tolerance in WTi-Al2O3 cermet-based solar selective absorbing coatings with low thermal emissivity".NANO ENERGY 37(2017):232-247.