Corrosion of stainless steel water storage tanks exposed in coastal atmospheric conditions

Authors

  • NHI TRU NGUYEN Department of Materials Technology, University of Technology-VNU HCM
  • MAI HAN TRAN KLP Chemtech Co.
  • ANH QUANG VU Department of Materials Technology, University of Technology-VNU HCM
  • HOANG TAM LUU Department of Materials Technology, University of Technology-VNU HCM
  • THI THAO NGUYEN BUI Department of Materials Technology, University of Technology-VNU HCM

DOI:

https://doi.org/10.15625/2525-2518/56/3B/12812

Abstract

Results of corrosion survey for stainless steel tanks used in water storage at various coastal areas are presented. Corrosion damages were revealed at both the outer and inner surfaces of tanks made of 304 and 201 steel grades. Corrosion deterioration was more severely observed for the atmospheric areas with higher airborne salinity and time of wetness.  Corrosion products examined by visual inspection and SEM-EDX technique show relatively distinctive characteristics for outer and inner surfaces which are attributed to different mechanisms of corrosion initiated by various corrosive agents in the atmosphere. Atmospheric chlorides from airborne sources are considered the main reason for causing corrosion of 304 and 201 steel grade water tanks.

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Published

2018-09-13

Issue

Section

3rd Intern Workshop CPM2018