TITLE:
Corrosion Study of AISI 304, AISI 321 and AISI 430 Stainless Steels in a Tar Sand Digester
AUTHORS:
L.E. Umoru, A.A. Afonja, B. Ademodi
KEYWORDS:
Stainless steel, corrosion, tar sand
JOURNAL NAME:
Journal of Minerals and Materials Characterization and Engineering,
Vol.7 No.4,
December
20,
2008
ABSTRACT: This work has investigated the corrosion properties of three types of stainless steels in a tar sand
digester environment with the aim of establishing their relative resistances in the environment.
The corrosion experiments for the stainless steels were conducted by the non-electrochemical
immersion technique with corrosion rates expressed in mils per year (mpy). The spectroscopy
analysis of the Nigerian tar sand was done by the energy dispersive x-ray analysis. The surface
study of the corroded stainless steels was accomplished via a scanning electron microscopy
(SEM) to reveal the form of corrosion.
The results of the corrosion experiments show that all the stainless steels have a relatively low
corrosion rates (