Crevice corrosion behavior of stainless steels and nickel based alloy in the natural seawater – effect of crevice geometry, temperature and seawater world location

2017 ◽  
Vol 69 ◽  
pp. 202-209 ◽  
Author(s):  
Abdelkader Meroufel ◽  
Nicolas Larché ◽  
Saleh Al Fozan ◽  
Dominique Thierry
Keyword(s):  
Corrosion Behavior ◽  
Stainless Steels ◽  
Crevice Corrosion ◽  
Natural Seawater ◽  
Nickel Based Alloy

scholarly journals Crevice Corrosion Behavior of Nitrogen Bearing Austenitic Stainless Steels

1999 ◽  
Vol 48 (3) ◽  
pp. 169-175 ◽  
Author(s):  
Alberto A. Ono ◽  
Tadashi Shinohara ◽  
Shigeo Tsujikawa
Keyword(s):  
Corrosion Behavior ◽  
Stainless Steels ◽  
Crevice Corrosion ◽  
Austenitic Stainless Steels

Crevice Corrosion Resistance of Stainless Steels in Natural Seawater in the Temperature Range of 25 to 40 C

CORROSION ◽  
1988 ◽  
Vol 44 (4) ◽  
pp. 194-198 ◽  
Author(s):  
A. Mollica ◽  
A. Trevis ◽  
E. Traverso ◽  
G. Ventura ◽  
G. De Carolis ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Stainless Steels ◽  
Crevice Corrosion ◽  
Natural Seawater ◽  
Temperature Range

MATERIALS EVALUATION FOR GEOTHERMAL APPLICATIONS

2015 ◽  
Vol 75 (7) ◽  
Author(s):  
Ralph Bäßler ◽  
Amela Keserovi ◽  
Joana Sobetzki ◽  
Helmuth Sarmiento Klapper
Keyword(s):  
Corrosion Resistance ◽  
Stainless Steels ◽  
Crevice Corrosion ◽  
Austenitic Stainless Steels ◽  
Constructional Material ◽  
Alloyed Steel ◽  
Saline Environments ◽  
Geothermal Fluids ◽  
Nickel Based Alloy ◽  
Low Alloyed Steel

In order to provide basic information on corrosion resistance to the designers and users of geothermal plants different metallic materials including duplex and austenitic stainless steels as well as a nickel alloy have been evaluated in artificial geothermal fluids simulating the conditions in some locations with geothermal potential in Germany as well as two sites in Indonesia. By electrochemical and long-term exposure tests at 100 °C and 150 °C the suitability of low alloyed steel UNS G41300, stainless steels UNS S31603 UNS S31803, UNS S32760, super austenitic steel UNS N08031 and nickel based alloy UNS N06059 was investigated in these geothermal fluids, using critical potentials and corrosion rates. In high-saline environments the crevice corrosion turned out to be the determining mechanism. The nickel based alloy shows excellent corrosion resistance against pitting corrosion. Excluding its high cost, it is very good to be used in the construction of geothermal facilities having highly saline brines. Stainless and duplex steels exhibit a limited corrosion resistance concerning pitting and crevice corrosion. Therefore they are not suitable for highly saline brines. The super austenite UNS N08031 showed a temperature depending behavior. In non-saline environments the low-alloyed steel UNS G41300 (beside of the higher alloyed materials) could be employed as a constructional material for the geothermal power plant, as long as a sufficient wall thickness of the material is considered. 

Influence of pH and Chloride Concentration on the Pitting and Crevice Corrosion Behavior of High-Alloy Stainless Steels

CORROSION ◽  
2000 ◽  
Vol 56 (4) ◽  
pp. 411-418 ◽  
Author(s):  
A. Pardo ◽  
E. Otero ◽  
M. C. Merino ◽  
M. D. López ◽  
M. V. Utrilla ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
Stainless Steels ◽  
Crevice Corrosion ◽  
Chloride Concentration ◽  
High Alloy ◽  
Influence Of Ph

REMANIT 4439

Alloy Digest ◽  
1993 ◽  
Vol 42 (11) ◽  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Stainless Steels ◽  
Crevice Corrosion ◽  
Heat Treating ◽  
Corrosion Resistant Steel ◽  
Resistant Steel ◽  
Low Carbon ◽  
Corrosion Resistant ◽  
Mechanical Properties And Corrosion

Abstract REMANIT 4439 is a highly corrosion resistant steel with low carbon content, an addition of nitrogen to enhance both mechanical properties and corrosion resistance, and higher molybdenum than most stainless steels to resist pitting and crevice corrosion in chloride media. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-556. Producer or source: Thyssen Stahl AG.

Detecting Critical Crevice Temperature for Duplex Stainless Steels in Chloride Solutions

CORROSION ◽  
2011 ◽  
Vol 67 (2) ◽  
pp. 025004-1-025004-7 ◽  
Author(s):  
D. Han ◽  
Y. Jiang ◽  
B. Deng ◽  
L. Zhang ◽  
J. Gao ◽  
...  
Keyword(s):  
Stainless Steels ◽  
Crevice Corrosion ◽  
Electrochemical Method ◽  
Duplex Stainless Steels ◽  
Good Reproducibility ◽  
X Ray ◽  
Initiation Step ◽  
Critical Pitting Temperature ◽  
Preferential Dissolution ◽  
Scanning Electron

Abstract A simple and rapid electrochemical method for the evaluation of crevice corrosion in duplex stainless steels (DSS) is described. Three types of DSS—namely, UNS S32101, UNS S31803, and UNS S32750—were tested in 1 mol/L sodium chloride (NaCl) solutions. Results showed good reproducibility with a typical standard deviation of below 3°C. The critical pitting temperature (CPT) for the same specimens was also investigated in 1 mol/L NaCl solutions. An approximately 20°C decrease from CPT to critical crevice temperature (CCT) was observed and subsequently explained. Then, the morphologies of crevice corrosion were studied using scanning electron microscopy with energy-dispersive x-ray spectroscopy (SEM/EDS) method. The SEM/EDS study revealed that the ferrite phase was the site where preferential dissolution took place at the initiation step of crevice corrosion, which was in accordance with the prediction by calculating the critical crevice index. Moreover, repassivation was detected with the development of crevice corrosion. The reason was clarified by combining the results obtained with a successful diffusion model, and eventually the crevice corrosion progress was illustrated schematically.

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