scholarly journals Microbially induced corrosion of carbon steel in deep groundwater environment

2015 ◽  
Vol 6 ◽  
Author(s):  
Pauliina Rajala ◽  
Leena Carpén ◽  
Mikko Vepsäläinen ◽  
Mari Raulio ◽  
Elina Sohlberg ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Deep Groundwater ◽  
Groundwater Environment ◽  
Microbially Induced Corrosion

Influence of Carbon Sources and Concrete on Microbiologically Influenced Corrosion of Carbon Steel in Subterranean Groundwater Environment

CORROSION ◽  
10.5006/2118 ◽  
2016 ◽  
Vol 72 (12) ◽  
pp. 1565-1579 ◽  
Author(s):  
Pauliina Rajala ◽  
Leena Carpén ◽  
Mikko Vepsäläinen ◽  
Mari Raulio ◽  
Elina Huttunen-Saarivirta ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Carbon Sources ◽  
Microbiologically Influenced Corrosion ◽  
Groundwater Environment

Sensitivity Analysis of Uranium Solubility Under Strongly Oxidizing Conditions

1999 ◽  
Vol 556 ◽  
Author(s):  
L. Liu ◽  
I. Neretnieks
Keyword(s):  
Equilibrium Constants ◽  
Algebraic Equations ◽  
Deep Groundwater ◽  
Chemical Equilibria ◽  
Geochemical Conditions ◽  
Groundwater Environment ◽  
Linear Algebraic Equations ◽  
Phosphate Silicate ◽  
Uranium Minerals ◽  
Complexation Reactions

AbstractTo evaluate the effect of geochemical conditions in the repository on the solubility of uranium under strongly oxidizing conditions, a mathematical model has been developed to determine the solubility, by utilizing a set of non linear algebraic equations to describe the chemical equilibria in the groundwater environment. The model takes into account the predominant precipitation-dissolution reactions, hydrolysis reactions and complexation reactions that may occur under strongly oxidizing conditions. The model also includes the solubilitylimiting solids induced by the presence of carbonate, phosphate, silicate, calcium, and sodium in the groundwater. The thermodynamic equilibrium constants used in the solubility calculations are essentially taken from the NEA Thermochemical Data Base of Uranium, with some modification and some uranium minerals added, such as soddyite, rutherfordite, uranophane, uranyl orthophosphate, and becquerelite. By applying this model, the sensitivities of uranium solubility to variations in the concentrations of various groundwater component species are systematically investigated. The results show that the total analytical concentrations of carbonate, phosphate, silicate, and calcium in deep groundwater play the most important role in determining the solubility of uranium under strongly oxidizing conditions.

scholarly journals Microbially Induced Corrosion in Deep Bedrock

2015 ◽  
Vol 1130 ◽  
pp. 75-78
Author(s):  
Leena Carpén ◽  
Pauliina Rajala ◽  
Malin Bomberg
Keyword(s):  
Radioactive Waste ◽  
Groundwater Environment ◽  
Microbially Induced Corrosion

This paper covers an overview of recent research of microbially induced corrosion in Fennoscandian terrestrial deep bedrock groundwater environment. The assessment of microbially induced corrosion of metals in the deep bedrock environment has become important in evaluating the long-term safety of disposal of radioactive waste.

scholarly journals Collect the basic microbial information to evaluate the deep groundwater environment

2021 ◽  
Vol 16 (1) ◽  
pp. 13-21
Author(s):  
Ayumi SUGIYAMA ◽  
Tetsuo IBARA ◽  
Kazuyo NAGAOSA ◽  
Maki TSUJIMURA ◽  
Kenji KATO
Keyword(s):  
Deep Groundwater ◽  
Groundwater Environment

Characterizing the effect of carbon steel exposure in sulfide containing solutions to microbially induced corrosion

2011 ◽  
Vol 53 (3) ◽  
pp. 955-960 ◽  
Author(s):  
B.W.A. Sherar ◽  
I.M. Power ◽  
P.G. Keech ◽  
S. Mitlin ◽  
G. Southam ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Microbially Induced Corrosion

Pyrolytic carbon filaments and associated catalytic particles formed in steel tubes

1984 ◽  
Vol 42 ◽  
pp. 662-663
Author(s):  
Y. L. Chen ◽  
J. R. Bradley
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Catalyst Particle ◽  
Pyrolytic Carbon ◽  
Plain Carbon Steel ◽  
304 Stainless Steel ◽  
Hydrocarbon Gases ◽  
Steel Tubes ◽  
Filamentous Carbon ◽  
Carbon Filaments

Considerable effort has been directed toward an improved understanding of the production of the strong and stiff ∼ 1-20 μm diameter pyrolytic carbon fibers of the type reported by Koyama and, more recently, by Tibbetts. These macroscopic fibers are produced when pyrolytic carbon filaments (∼ 0.1 μm or less in diameter) are thickened by deposition of carbon during thermal decomposition of hydrocarbon gases. Each such precursor filament normally lengthens in association with an attached catalyst particle. The subject of filamentous carbon formation and much of the work on characterization of the catalyst particles have been reviewed thoroughly by Baker and Harris. However, identification of the catalyst particles remains a problem of continuing interest. The purpose of this work was to characterize the microstructure of the pyrolytic carbon filaments and the catalyst particles formed inside stainless steel and plain carbon steel tubes. For the present study, natural gas (∼; 97 % methane) was passed through type 304 stainless steel and SAE 1020 plain carbon steel tubes at 1240°K.

Internal friction in a martensitic high-carbon steel

2001 ◽  
Vol 81 (12) ◽  
pp. 2797-2808
Author(s):  
Rustem Bagramov, Daniele Mari, Willy Benoi
Keyword(s):  
Carbon Steel ◽  
Internal Friction ◽  
High Carbon Steel ◽  
High Carbon

Development of trimming technology for hot rolled ultra-low carbon steel

1993 ◽  
Vol 90 (7-8) ◽  
pp. 917-922
Author(s):  
Y. Matsuda ◽  
M. Nishino ◽  
J. Ikeda
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Ultra Low Carbon Steel ◽  
Hot Rolled

INFLUENCE THE QUENCHING AND TEMPERING ON THE MICROSTRUCTURE, MECHANICAL PROPERTIES AND SURFACE ROUGHNESS, OF MEDIUM CARBON STEEL

2018 ◽  
Vol 18 (1) ◽  
pp. 125-135
Author(s):  
Sattar H A Alfatlawi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Surface Roughness ◽  
Carbon Steel ◽  
Cold Water ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Heating And Cooling ◽  
Treatment Processes ◽  
Quenching And Tempering

One of ways to improve properties of materials without changing the product shape toobtain the desired engineering applications is heating and cooling under effect of controlledsequence of heat treatment. The main aim of this study was to investigate the effect ofheating and cooling on the surface roughness, microstructure and some selected propertiessuch as the hardness and impact strength of Medium Carbon Steel which treated at differenttypes of heat treatment processes. Heat treatment achieved in this work was respectively,heating, quenching and tempering. The specimens were heated to 850°C and left for 45minutes inside the furnace as a holding time at that temperature, then quenching process wasperformed in four types of quenching media (still air, cold water (2°C), oil and polymersolution), respectively. Thereafter, the samples were tempered at 200°C, 400°C, and 600°Cwith one hour as a soaking time for each temperature, then were all cooled by still air. Whenthe heat treatment process was completed, the surface roughness, hardness, impact strengthand microstructure tests were performed. The results showed a change and clearimprovement of surface roughness, mechanical properties and microstructure afterquenching was achieved, as well as the change that took place due to the increasingtoughness and ductility by reducing of brittleness of samples.

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