Proceedings of the 2016 4th International Conference on Machinery, Materials and Information Technology Applications

High Temperature Corrosion behavior of Metallic Materials in modified Hitec Molten Salts

Authors
Wei Zhai, Bo Yang, Shiping Li, Zhigang Wang, Shuanghong Zhang, Guojia Huang
Corresponding Author
Wei Zhai
Available Online January 2017.
DOI
https://doi.org/10.2991/icmmita-16.2016.131How to use a DOI?
Keywords
corrosion; metal materials; molten salts; electrochemical tests
Abstract

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.

Copyright
© 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/).

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Volume Title
Proceedings of the 2016 4th International Conference on Machinery, Materials and Information Technology Applications
Series
Advances in Computer Science Research
Publication Date
January 2017
ISBN
978-94-6252-285-5
ISSN
2352-538X
DOI
https://doi.org/10.2991/icmmita-16.2016.131How to use a DOI?
Copyright
© 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  -