Liquid Corrosion Property of Al-12Si-10Cu Energy Storage Alloy

Abstract:

According to recent researches, aluminum alloy is an ideal choice for solar energy storage technology. But the erosion nature limits its promotion and application. Therefore, it is particularly important to research the corrosion behavior and the corrosion mechanism. In this paper, the 304 stainless steel was used as the container material. By analyzing the corrosion kinetics curves, the erosion thickness increases and the erosion rate decreases with the erosion time extension. Electron probe, X-Ray Diffraction (XRD) and other instruments were used to research the corrosion behavior and mechanism of erosion products. The results show that the erosion form is uniform corrosion. The erosion phenomenon is due to the diffusion corrosion of Al element. Si, Al_0.5Fe₃Si_0.5 compound and Al₉₅Fe₄Cr compound in the erosion layers can retard the diffusion of Al.

• Periodical: Applied Mechanics and Materials (Volumes 513-517)
• Pages: 177-180
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.513-517.177
• Online since: February 2014
• Authors: Xiao Hua Zhang*, Si Rong Yu
• Keywords: 304 Stainless Steel, Al-12Si-10Cu Alloy, Erosion

References

[1] Zalba B, Marı́n J M, Cabeza L F, et al. Review on thermal energy storage with phase change: materials, heat transfer analysis and applications [J]. Applied thermal engineering, 23(3) (2003): 251-283.

DOI: 10.1016/s1359-4311(02)00192-8

[2] Jianqiang Sun, Renyuan Zhang, Ruiping Zhong. Thermal storage property and liquid corrosion of A1-34％Mg-6％Zn alloy [J]. Corrosion and Protection, 27(4) (2006): 000. (In Chinese).

[3] Xiang Zou, Renyuan Zhang, Qilian Fan. The high-temperature corrosion and protection of metal phase change thermal storage's container [J]. Erosion and protection, 19(3) (1992): 111. (In Chinese).

[4] Akdeniz M V, Mekhrabov A O, Yilmaz T. The role of Si addition on the interfacial interaction in Fe-Al diffusion layer[J]. Scripta metallurgica et materialia, 31(12) (1994): 1723-1728.

DOI: 10.1016/0956-716x(94)90471-5

[5] Selverian J H, Notis M R, Marder A R. The microstructure of 55 w/o Al-Zn-Si (Galvalume) hot dip coatings[J]. Journal of materials engineering, 9(2) ( 1987): 133-140.

DOI: 10.1007/bf02833702