scholarly journals On the possibility of influence of micromycetes on corrosion behaviour of carbon steel

2020 ◽  
Vol 10 (1) ◽  
pp. 84-93
Author(s):  
Natalia A. Medvedeva ◽  
Svetlana Y. Balandina ◽  
Alice G. Bortnik ◽  
Mariia D. Plotnikova ◽  
Natalya Y. Lisovenko
Keyword(s):  
Carbon Steel ◽  
Corrosion Behaviour ◽  
Steel Corrosion ◽  
Corrosion Damage ◽  
Oil Field ◽  
Quality Grade ◽  
Water And Soil Samples ◽  
Ulcerative Lesions ◽  
Structural Carbon ◽  
Structural Carbon Steel

It is determined that in the oil field regions of the Perm Territory, water and soil samples contain micromycetes of various kinds. Penicillium, Aspergillus, Trichoderma were identified and identified. The effect of micromycetes on steel corrosion was investigated using the fungus resistance method. It was established that the presence of Penicillium, Aspergillus, Trichoderma causes significant corrosion damage to structural carbon steel quality grade St20. The nature of corrosion damage was determined by optical microscopy. It was shown that the areas affected by micromycetes have an uneven nature of corrosion damage with individual point and ulcerative lesions of the St20 surface. The change in the intensity of the growth of micromycetes of various kinds on steel from the time of exposure was established.

Analysis of adsorption of carbon steel corrosion inhibitor in model stratum waters by polylogarithmic isotherm

2021 ◽  
pp. 20-26
Author(s):  
L.E. Tsygankova ◽  
◽  
N. Alshikha ◽  
M.V. Vigdorowitsch ◽  
I.V. Zarapina ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Steel Corrosion ◽  
Oil Field ◽  
Energy Gradient ◽  
Double Layer Capacity ◽  
Sulfide Corrosion ◽  
As Adsorption ◽  
Hydrogen Sulfide Corrosion ◽  
Protective Effectiveness ◽  
Steel St3

Using the methods of gravimetry, potentiodynamic polarization, and impedance spectroscopy, the protective effectiveness of the inhibitory composition INCORGAZ-111 with respect to hydrogen sulfide corrosion of carbon steel St3 in NACE and Samotlor oil field model stratum waters has been studied. Surface coverage is determined on the basis of the electric double layer capacity in presence of the inhibitor. Its adsorption is interpreted using the polylogarithmic isotherm with a big energy gradient of adsorption centers, that indicates linear energy heterogeneity of the surface. The constants of adsorption equilibrium, the energy gradient and the energy dispersion of adsorption centers as well as adsorption free energy were calculated.

scholarly journals Identification of the Flow Properties of a 0.54% Carbon Steel during Continuous Cooling

Metals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 104
Author(s):  
Christoph Rößler ◽  
David Schmicker ◽  
Oleksii Sherepenko ◽  
Thorsten Halle ◽  
Markus Körner ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Flow Properties ◽  
Carreau Fluid ◽  
Cooling Process ◽  
Material Parameters ◽  
Essential Step ◽  
Deformation Processes ◽  
Structural Carbon ◽  
Experimental Effort ◽  
Structural Carbon Steel

The determinination of material properties is an essential step in the simulation of manufacturing processes. For hot deformation processes, consistently assessed Carreau fluid constitutive model derived in prior works by Schmicker et al. might be used, in which the flow stress is described as a function of the current temperature and the current strain rate. The following paper aims to extend the prior mentioned model by making a distinction, whether the material is being heated or cooled, enhancing the model capabilities to predict deformations within the cooling process. The experimental identifaction of the material parameters is demonstrated for a structural carbon steel with 0.54% carbon content. An approach to derive the flow properties during cooling from the same samples used at heating is presented, which massively reduces the experimental effort in future applications.

An Experimental Basis for a Mixed Potential Model for Nuclear Fuel Corrosion within a Failed Waste Container

2004 ◽  
Vol 824 ◽  
Author(s):  
D.W. Shoesmith ◽  
J.J. Noël ◽  
F. Garisto
Keyword(s):  
Carbon Steel ◽  
Nuclear Fuel ◽  
Input Data ◽  
Potential Model ◽  
Corrosion Behaviour ◽  
Steel Corrosion ◽  
Mixed Potential ◽  
Experimental Basis ◽  
Fuel Surface ◽  
Waste Container

AbstractA mixed-potential model to predict the corrosion behaviour of nuclear fuel inside a failed carbon steel-lined copper waste container in a granitic repository is briefly described. A number of experiments underway to improve the mechanistic form of the model and to provide the necessary input data are discussed. A primary emphasis is placed on the consequences of the accumulation of corrosion product deposits on the fuel surface on the development of aggressive local chemistries, the cathodic reduction of H2O2 and potential for scavenging of H2O2 by the products of carbon steel corrosion (in particular H2).

scholarly journals Microbial Methane Production Associated with Carbon Steel Corrosion in a Nigerian Oil Field

2016 ◽  
Vol 6 ◽  
Author(s):  
Jaspreet Mand ◽  
Hyung S. Park ◽  
Chuma Okoro ◽  
Bart P. Lomans ◽  
Seun Smith ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Methane Production ◽  
Steel Corrosion ◽  
Oil Field
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