Contribution of iron archaeological artefacts to the estimation of average corrosion rates and the long-term corrosion mechanisms of low-carbon steel buried in soil

2007 ◽  
Author(s):  
E Vega ◽  
D Neff ◽  
M Descostes ◽  
L Bellot-Gurlet
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Corrosion Rates ◽  
Corrosion Mechanisms

The Corrosion of Carbon Steel and Stainless Steel in Simulated Geothermal Media

1985 ◽  
Vol 38 (8) ◽  
pp. 1133 ◽  
Author(s):  
BG Pound ◽  
MH Abdurrahman ◽  
MP Glucina ◽  
GA Wright ◽  
RM Sharp
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Stainless Steels ◽  
Polarization Resistance ◽  
Iron Sulfide ◽  
Low Carbon Steel ◽  
Passive Films ◽  
Low Carbon ◽  
Corrosion Rates ◽  
Good Agreement

The corrosion rates of low-carbon steel, and 304, 316 and 410/420 stainless steels in simulated geothermal media containing hydrogen sulfide have been measured by means of the polarization resistance technique. Good agreement was found between weight-loss and polarization resistance measurements of the corrosion rate for all the metals tested. Carbon steel formed a non-adherent film of mackinawite (Fe1 + xS). The lack of protection afforded to the steel by the film resulted in an approximately constant corrosion rate. The stainless steels also exhibited corrosion rates that were independent of time. However, the 410 and 420 alloys formed an adherent film consisting mainly of troilite ( FeS ) which provided only limited passivity. In contrast, the 304 and 316 alloys appeared to be essentially protected by a passive film which did not seem to involve an iron sulfide phase. However, all the stainless steels, particularly the 410 and 420 alloys, showed pitting, which indicated that some breakdown of the passive films occurred.

Corrosion Behavior of Al-Si-Cr-Cu Bearing Low Carbon Steel in A Cyclic Dry/Wet Laboratory Test

2009 ◽  
Vol 79-82 ◽  
pp. 1017-1020 ◽  
Author(s):  
Hui Shu Zhang ◽  
Dong Ping Zhan ◽  
Song Lian Bai ◽  
Zhou Hua Jiang
Keyword(s):  
Carbon Steel ◽  
Electrochemical Impedance ◽  
Low Carbon Steel ◽  
Optical Microscope ◽  
Low Carbon ◽  
Rust Layer ◽  
Electrochemical Behaviors ◽  
Corrosion Rates ◽  
The Matrix ◽  
Corrosion Behaviors

The corrosion behaviors of Al-Si-Cr-Cu bearing low carbon steel and a reference steel Q235 were tested in a cyclic dry/wet environment containing 0.01mol/L NaHSO3 in laboratory. Rust layers were observed by optical microscope (OM), scanning electron microscopy (SEM) and XRD. The electrochemical behaviors of the steels were studied on the polarization curves and electrochemical impedance spectroscopy (EIS). The results indicate that after 120h corrosion test, the annual corrosion rates of the designed steels reduce 42 % than Q235 at least. The corrosion products are generally iron oxyhydroxides and oxides such as FeOOH, γ-FeOOH, α-FeOOH, γ-Fe2O3, Fe3O4. The α-FeOOH possesses good stabilization mainly exits and can improve the corrosion resistance. There are the enrichments of Cu, Cr, Si and Al in the rust layer close to the matrix, which make the rust layer be more compact and protected. The corrosion currents of the two designed steels are lower than that of Q235, the corrosion potentials are higher than that of Q235 after Tafel fitting. The rust layer impedances of the designed steels are higher than that of Q235.

High-cycle fatigue failure of low-carbon steel after long-term aging

2010 ◽  
Vol 46 (14) ◽  
pp. 1570-1577 ◽  
Author(s):  
L. R. Botvina ◽  
I. M. Petrova ◽  
I. V. Gadolina ◽  
V. P. Levin ◽  
Yu. A. Demina ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Fatigue Failure ◽  
High Cycle Fatigue ◽  
Low Carbon Steel ◽  
Cycle Fatigue ◽  
Low Carbon

scholarly journals Stress Induced in Low Carbon Steel Tubes of Kids Bicycle Upon Impact

2019 ◽  
Vol 9 (2S4) ◽  
pp. 199-201
Keyword(s):  
Carbon Steel ◽  
Product Innovation ◽  
New Products ◽  
Low Carbon Steel ◽  
High Rate ◽  
Low Carbon ◽  
Steel Tubes ◽  
A Company ◽  
Continuous Product

The market environment is characterized by keen competition, an oversupply of goods, rapidly shifting tastes and a high rate of product innovation ad obsolescence. The long term profitability or the very survival of a company depends on new products and on commitments to continuous product innovation. Firms are seeking differential advantage and their actions continue to segment large market into smaller sub-segments. There is often a back and forth action between market reconsolidation based on innovation and fragmentation based on competition.

Loading Frequency Effects on the Fatigue Crack Growth Rate and Fracture Surface Morphology of Low Carbon Steel in Case of Long-Term Use in Hydrogen Gas

2011 ◽  
Vol 488-489 ◽  
pp. 323-326
Author(s):  
A. Nishimoto ◽  
Yasuji Oda ◽  
Hiroshi Noguchi
Keyword(s):  
Carbon Steel ◽  
Fracture Surface ◽  
Surface Morphology ◽  
Low Carbon Steel ◽  
Hydrogen Gas ◽  
Loading Frequency ◽  
Fracture Surface Morphology ◽  
Low Carbon ◽  
Frequency Effects

Loading frequency effects on FCGR and fracture surface morphology were investigated on pre-strained low carbon steel in high FCGR range. Loading frequency effects showed the different trend between internal hydrogen and environmental hydrogen. The effects of combined condition hydrogen revealed similar tendency of environmental hydrogen.

Long-term strain-ageing effects on low-carbon steel reinforcement

2019 ◽  
Vol 228 ◽  
pp. 116606 ◽  
Author(s):  
Giuseppe Loporcaro ◽  
Stefano Pampanin ◽  
Milo V. Kral
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Steel Reinforcement ◽  
Low Carbon ◽  
Strain Ageing ◽  
Ageing Effects
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