Proceedings of the 2019 International Conference on Electronical, Mechanical and Materials Engineering (ICE2ME 2019)

An Environmentally Friendly Passivation Technology for the Water-cooling Process of Batch Hot-dip Galvanization

Authors
Yongfeng Long, Changsheng Liu, Hongxin Wen
Corresponding Author
Yongfeng Long
Available Online March 2019.
DOI
10.2991/ice2me-19.2019.37How to use a DOI?
Keywords
batch hot-dip galvanizing; water-cooling medium; chromic anhydride passivation; environment-friendly passivation
Abstract

In batch hot-dip galvanizing, 0.2-0.3 wt% chromic anhydride solution is traditionally used as awater-cooling medium to prevent white rust. It generates a lot of chromium acid mist and wastewater, both of which are very harmful to humans and the environment. In our study, an environmental-friendly passivation technology as a water-cooling medium was developed for the first time. It consisted of several inorganic inhibitors to prevent zinc corrosion such as molybdate, tungstate, vanadate and phosphate. The corrosion resistance, surface morphology, chemical composition and electrochemical behavior of the samples prepared with tap water, 0.2 wt% chromic anhydride solution and new green passivation solution were compared. The new environmentally friendly passivation technology had a similar effect to that of chromic anhydride solution, thus, it had a strong industrial application potential.

Copyright
© 2019, 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/).

Download article (PDF)

Volume Title
Proceedings of the 2019 International Conference on Electronical, Mechanical and Materials Engineering (ICE2ME 2019)
Series
Advances in Engineering Research
Publication Date
March 2019
ISBN
978-94-6252-685-3
ISSN
2352-5401
DOI
10.2991/ice2me-19.2019.37How to use a DOI?
Copyright
© 2019, 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  - Yongfeng Long
AU  - Changsheng Liu
AU  - Hongxin Wen
PY  - 2019/03
DA  - 2019/03
TI  - An Environmentally Friendly Passivation Technology for the Water-cooling Process of Batch Hot-dip Galvanization
BT  - Proceedings of the 2019 International Conference on Electronical, Mechanical and Materials Engineering (ICE2ME 2019)
PB  - Atlantis Press
SP  - 166
EP  - 169
SN  - 2352-5401
UR  - https://doi.org/10.2991/ice2me-19.2019.37
DO  - 10.2991/ice2me-19.2019.37
ID  - Long2019/03
ER  -