Spectrum Analysis of Corrosion Potential Fluctuations for Localized Corrosion of Type 304 Stainless Steel

1987 ◽  
Vol 134 (12) ◽  
pp. 2993-2997 ◽  
Author(s):  
Shin‐ichi Magaino ◽  
Akihiro Kawaguchi ◽  
Akira Hirata ◽  
Tetsuya Osaka
Keyword(s):  
Stainless Steel ◽  
Spectrum Analysis ◽  
Corrosion Potential ◽  
Localized Corrosion ◽  
304 Stainless Steel ◽  
Potential Fluctuations ◽  
Type 304 ◽  
Type 304 Stainless Steel

Detection of Stress Corrosion Cracking of Type 304 Stainless Steel Using Acoustic Emission and Corrosion Potential Fluctuation

2006 ◽  
Vol 13-14 ◽  
pp. 243-250 ◽  
Author(s):  
Akio Yonezu ◽  
Hideo Cho ◽  
Mikio Takemoto
Keyword(s):  
Stainless Steel ◽  
Corrosion Potential ◽  
Time Lag ◽  
Hydrogen Gas ◽  
Corrosion Products ◽  
304 Stainless Steel ◽  
Single Frequency ◽  
Potential Fluctuation ◽  
Type 304 ◽  
Type 304 Stainless Steel

This paper discusses the mechanism of chloride SCC of sensitized and non-sensitized Type-304 stainless steel based on the data obtained by simultaneous monitoring of AE and corrosion potential fluctuation (CPF). The steel produced transgranular SCC via corrosion pits filled with corrosion product (chromium oxy-hydroxides) in 35 mass % MgCl2 solution. Both the pitting corrosion and transgranular SCC did not produce primary AEs due to anodic dissolution, while they generated rapid drop (RD) type CPF. We, however, detected the secondary AEs from hydrogen gas evolution and fracture of corrosion products. Hydrogen gas was found to produce AE with single frequency component, while the fracture of corrosion products produced AEs with broad frequency components. The sensitized steel produced primary AEs due to the falling-off of grains as well as the secondary AEs. Microscopic progression of SCC was consistently interpreted by the timing and time-lag of AEs and CPFs.

Effect of Inorganic and Biogenic Sulfide on Localized Corrosion of Heat-Treated Type 304 Stainless Steel

CORROSION ◽  
1991 ◽  
Vol 47 (1) ◽  
pp. 24-30 ◽  
Author(s):  
M. F. L. de Mele ◽  
D. A. Moreno ◽  
J. R. Ibars ◽  
H. A. Videla
Keyword(s):  
Stainless Steel ◽  
Localized Corrosion ◽  
304 Stainless Steel ◽  
Heat Treated ◽  
Type 304 ◽  
Type 304 Stainless Steel
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