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Title: Compatibility study between aluminium alloys and alternative recycled ceramics for Thermal Energy Storage applications
Authors: Xu, Haoxin
Sadiki, Najim
Mancaux, Jean-Marie
Romagnoli, Alessandro
Dal Magro, Fabio
Py, Xavier
Keywords: Latent Heat Thermal Energy Storage
Aluminium Alloys
Issue Date: 2018
Source: Xu, H., Dal Magro, F., Sadiki, N., Mancaux, J.-M., Py, X., & Romagnoli, A. (2018). Compatibility study between aluminium alloys and alternative recycled ceramics for thermal energy storage applications. Applied Energy, 220, 94-105.
Series/Report no.: Applied Energy
Abstract: Recycled ceramics from industrial wastes, compared with traditional high-purity ceramics, present high market potential as refractory materials due to their low cost production process with very low environmental impacts. However, there still exists a research gap of how recycled ceramics behave while in contact with liquid metal. In order to study the feasibility of using recycled ceramics as the encapsulation material in the application of high temperature Latent Heat Thermal Energy Storage system, this paper investigates the compatibility of recycled ceramics with three kinds of aluminium-based alloys at high temperature, with a comparison to the corrosion resistant behaviour of alumina. The recycled ceramics explored include Cofalit from asbestos containing waste, blast furnace slags from steel production, and coal fly ashes sintered ceramics from incineration plants. The study consists of a steady state thermal treatment of ceramic samples in contact with the three different alloys at 1000°C for 100 hours, and a post instrumental characterization of ceramic samples by Environmental Scanning Electron Microscopy, Energy Dispersive Spectrometry and X-ray diffractometer, to understand the chemical and structural transformation of the ceramics. Results demonstrate that Cofalit shows chemical stability with Al99% but instability with AlSi5% and AlSi12%. Blast furnace slag presents quite good thermochemical stability towards molten AlSi5% and AlSi12%. Coal fly ashes sintered ceramics are highly interactive towards all three aluminium alloys. In conclusion, besides alumina, Cofalit is recommended as alternative encapsulation material for molten Al99%, while blast furnace slag being recommended for molten AlSi5% and AlSi12%.
ISSN: 0306-2619
DOI: 10.1016/j.apenergy.2018.03.021
Rights: © 2018 Elsevier Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Applied Energy, Elsevier Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
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