High Temperature Corrosion behavior of Metallic Materials in modified Hitec Molten Salts
- https://doi.org/10.2991/icmmita-16.2016.131How to use a DOI?
- corrosion; metal materials; molten salts; electrochemical tests
High temperature molten salts as a heat transfer heat storage medium has been more widely used in the field of concentrated solar thermal power generation. The metal material in molten salts has strong corrosive, limiting molten salts large-scale industrial use. In this paper, study on corrosion of 321H, 304, 316L, P91 metal materials in modified Hitec molten salts. Under the same condition it was found that 316L, 304 steels corroded at a rate of 35% less than P91. Spallation of corrosion products was observed on P91 steel, while no obvious observed on other kinds of stainless steel. Corrosion rates of 316L and 304 slowly increased with temperature. Oxidation mechanisms little varied with temperature. Corrosion products of metal materials observed at 450øC were primarily Fe oxide and Fe, Cr oxide. Electrochemical tests were performed by electrochemical measurement work station. The Nyquist plots of metal materials indicated that the anticorrosive properties of 316L, 304 steels are better than 321H, P91steels. Then the anticorrosive properties of metal materials accordance with corrosion kinetics curve of metal materials.
- © 2017, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Wei Zhai AU - Bo Yang AU - Shiping Li AU - Zhigang Wang AU - Shuanghong Zhang AU - Guojia Huang PY - 2017/01 DA - 2017/01 TI - High Temperature Corrosion behavior of Metallic Materials in modified Hitec Molten Salts BT - Proceedings of the 2016 4th International Conference on Machinery, Materials and Information Technology Applications PB - Atlantis Press SP - 707 EP - 713 SN - 2352-538X UR - https://doi.org/10.2991/icmmita-16.2016.131 DO - https://doi.org/10.2991/icmmita-16.2016.131 ID - Zhai2017/01 ER -