skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Electrochemical characteristics of chromium-saving ferritic stainless steel

Abstract

Effects of Al and Si added to Fe-8% Cr alloys on anodic polarization and decay curves obtained in 0.05 M sulfuric acid (H{sub 2}SO{sub 4}) aqueous solution were studied to explore the possibility of developing a Cr-saving stainless steel. Experimental results showed that the critical current density for passivation decreased with increasing Al and Si contents in Fe-8% Cr alloys. Combined addition of Al and Si decreased the current density more effectively. Addition of Al had a slight effect in making the decay time longer. However, addition of Si made the decay time exceedingly longer. The pitting potential in 3.5% sodium chloride (NaCl) aqueous solution moved in the noble direction with increasing Al and Si contents. Fe-8% Cr alloys containing Al and Si had the corrosion resistance that was equal to or greater than that of Fe-12% Cr stainless steel.

Authors:
 [1];  [2];  [3]
  1. Mie Prefectural Industrial Research Inst., Kuwana, Mie (Japan). Metals Lab.
  2. Nagoya Municipal Industrial Research Inst., Nagoya, Aichi (Japan). Metallurgy Section
  3. Daido Inst. of Tech., Nagoya, Aichi (Japan). Dept. of Mechanical Engineering
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
684439
Resource Type:
Journal Article
Journal Name:
Corrosion
Additional Journal Information:
Journal Volume: 55; Journal Issue: 9; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CORROSION RESISTANCE; STAINLESS STEELS; ALUMINIUM ADDITIONS; SILICON ADDITIONS; SULFURIC ACID; SODIUM CHLORIDES; ELECTROCHEMISTRY; CURRENT DENSITY; PASSIVATION

Citation Formats

Hio, K., Tsutsui, M., and Hosoi, Y. Electrochemical characteristics of chromium-saving ferritic stainless steel. United States: N. p., 1999. Web. doi:10.5006/1.3284038.
Hio, K., Tsutsui, M., & Hosoi, Y. Electrochemical characteristics of chromium-saving ferritic stainless steel. United States. doi:10.5006/1.3284038.
Hio, K., Tsutsui, M., and Hosoi, Y. Wed . "Electrochemical characteristics of chromium-saving ferritic stainless steel". United States. doi:10.5006/1.3284038.
@article{osti_684439,
title = {Electrochemical characteristics of chromium-saving ferritic stainless steel},
author = {Hio, K. and Tsutsui, M. and Hosoi, Y.},
abstractNote = {Effects of Al and Si added to Fe-8% Cr alloys on anodic polarization and decay curves obtained in 0.05 M sulfuric acid (H{sub 2}SO{sub 4}) aqueous solution were studied to explore the possibility of developing a Cr-saving stainless steel. Experimental results showed that the critical current density for passivation decreased with increasing Al and Si contents in Fe-8% Cr alloys. Combined addition of Al and Si decreased the current density more effectively. Addition of Al had a slight effect in making the decay time longer. However, addition of Si made the decay time exceedingly longer. The pitting potential in 3.5% sodium chloride (NaCl) aqueous solution moved in the noble direction with increasing Al and Si contents. Fe-8% Cr alloys containing Al and Si had the corrosion resistance that was equal to or greater than that of Fe-12% Cr stainless steel.},
doi = {10.5006/1.3284038},
journal = {Corrosion},
number = 9,
volume = 55,
place = {United States},
year = {1999},
month = {9}
}