Back to Search Start Over

High-temperature stability of Cu–20Si alloy-corundum ceramic composite thermal storage materials.

Authors :
Wu, Jianfeng
Yu, Jiaqi
Zhang, Qiankun
Xu, Xiaohong
Shen, Yaqiang
Zhou, Yang
Source :
Ceramics International. Jan2024:Part B, Vol. 50 Issue 2, p3950-3957. 8p.
Publication Year :
2024

Abstract

High-temperature stable thermal storage materials are urgently needed to meet the demand for solar thermal power generation. Herein, Cu–20Si alloy-corundum ceramic composite thermal storage materials are prepared. The thermal storage performance of the composite, and the erosion resistance of ceramic matrix to alloy are investigated during high-temperature (1000 °C) service for 1000 h. The results show that the latent heat of Cu–20Si alloy is increased by 130.76 % to 201.2 kJ/kg compared with the original. Meanwhile, the alloy forms a dense transition layer on the ceramic matrix surface by melting and spreading. Furthermore, the ceramic matrix shows superior erosion resistance to the alloy, owing to the dense structure of ceramic and no chemical reactions between the alloy and ceramic matrix. Finally, test results of long-time service confirm the stability of the composite, which can be used stably for high temperature thermal storage. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
02728842
Volume :
50
Issue :
2
Database :
Academic Search Index
Journal :
Ceramics International
Publication Type :
Academic Journal
Accession number :
174232748
Full Text :
https://doi.org/10.1016/j.ceramint.2023.11.158