Mössbauer and X-ray analysis of corrosion products from surface equipment of oil production well

1988 ◽  
Vol 128 (3) ◽  
pp. 207-213 ◽  
Author(s):  
T. M. Peev ◽  
A. I. Akala ◽  
V. Rusanov
Keyword(s):  
Oil Production ◽  
Corrosion Products ◽  
Production Well ◽  
X Ray

Identification of corrosion products and 3D distribution in reinforced concrete using X-ray micro computed tomography

2019 ◽  
Vol 207 ◽  
pp. 304-315 ◽  
Author(s):  
Guohao Fang ◽  
Weijian Ding ◽  
Yuqing Liu ◽  
Jianchao Zhang ◽  
Feng Xing ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Reinforced Concrete ◽  
Corrosion Products ◽  
Micro Computed Tomography ◽  
X Ray

A study of the corrosion of polymethyl methacrylate coated rebar using glancing angle X-ray absorption near edge spectroscopy

CORROSION ◽  
10.5006/3912 ◽  
2021 ◽  
Author(s):  
Arthur Situm ◽  
Xiaoxuan Guo ◽  
Burke Barlow ◽  
Bao Guo ◽  
Ian Burgess ◽  
...  
Keyword(s):  
Polymethyl Methacrylate ◽  
Polymer Coating ◽  
Steel Corrosion ◽  
Corrosion Products ◽  
Thin Layers ◽  
Fluorescence Signal ◽  
X Rays ◽  
X Ray ◽  
Glancing Angle ◽  
X Ray Absorption

Polymer coatings can be used to mitigate the corrosion of steel in high chloride environments. Obtaining speciation information from thin corrosion layers can be important for understanding corrosion mechanisms, including polymer coating failure. This study outlines the effectiveness of collecting glancing angle X-ray absorption near edge spectroscopy (GA-XANES) spectra at the Fe K-edge to obtain chemical speciation information at the polymer-steel interface without removal of the polymer film. The depth of penetration of the incident X-rays can be altered by changing the incidence angle, allowing for more fluorescence signal from corrosion products to be detected relative to the Fe metal fluorescence signal in GA-XANES spectra. This study demonstrates the use of GA-XANES to study thin layers of steel corrosion and obtain depth profile information of steel corrosion products beneath a polymethyl methacrylate polymer coating.

Corrosion Behavior of Q235A Steel under Wet-Dry Cyclic Condition

2012 ◽  
Vol 557-559 ◽  
pp. 139-142
Author(s):  
Jian Guo Liu ◽  
Yan Tao Li ◽  
Bao Rong Hou
Keyword(s):  
Electron Microscopy ◽  
Chloride Concentration ◽  
Corrosion Products ◽  
Drying Process ◽  
X Ray Diffraction ◽  
Cathodic Process ◽  
X Ray ◽  
Reduction Processes ◽  
Cyclic Condition ◽  
Scanning Electron

The corrosion processes and mechanisms of Q235A steel under wet-dry cyclic condition were studied using polarization curve compared with immersion samples, while, the corrosion morphologies and corrosion products of the steel samples were characterized using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The cathodic process of wet-dry samples was likely to be controlled not by the oxygen reduction, but rather by the reduction of corrosion products. During the drying process of the wet-dry sample, the electrolyte thickness decreased and chloride concentration increased. Oxygen would be much easier to diffuse into the interface of electrolyte/metal, which improved the cathodic reduction processes. Except for this, the rust itself took part in the reduction processes and hence increased the corrosion rate of the steel samples.

Computer processing of x-ray electron spectra of a film of corrosion products

1992 ◽  
Vol 28 (3) ◽  
pp. 326-328
Author(s):  
L. G. Zorina ◽  
Yu. M. Kaplin ◽  
Yu. V. Ponomarev ◽  
Yu. V. Zelenskii
Keyword(s):  
Computer Processing ◽  
Corrosion Products ◽  
X Ray ◽  
Electron Spectra

X-Ray Spectrographic Analysis of the 3-d Transition Metal Corrosion Products Using Potassium Bromide Disks*

1963 ◽  
Vol 7 ◽  
pp. 590-597
Author(s):  
L. A. Schluter
Keyword(s):  
Pulse Height ◽  
Weight Ratio ◽  
Internal Standard ◽  
Corrosion Products ◽  
Metal Corrosion ◽  
Small Samples ◽  
Bragg Angle ◽  
X Ray ◽  
Calibration Curves ◽  
Intensity Ratios

AbstractA technique has been developed for quantitative analysis of the major constituents in small samples (less than 0.1 g) of corrosion products found On various missile parts. The technique was developed primarily to aid in interpretation of X-ray diffraction patterns of multicomponent corrosion products. The corrosion sample is mixed with KBr and the mixture is pressed into a disk in the same fashion commonly used in infrared work. The Br Kβ1 line serves as an internal standard. Intensities of the element's Kα line and the internal standard are established by scanning through the appropriate Bragg angle and recording peak heights on a strip-chart recorder. A xenon-filled proportional detector and a pulse-height analyzer were used.The percent of an element is determined by references to calibration curves which relate intensity ratios to weight ratios for the 3-d transition metals. The oxides of the metals were used in the preparation of the calibration curves. The weight ratio vs. intensity ratio relationship is linear over the weight ratio range 0.01 to 0.11. Data were collected using an air path and a helium path; the higher intensity ratios obtained with, the helium path, and the dependence of intensity on atomic number are illustrated. A comparison is made between the intensity ratios in a KBr matrix and in a NaBr matrix. The technique developed requires about 15 min sample preparation time.

scholarly journals Petrotoga mobilis sp. nov., from a North Sea oil-production well

1998 ◽  
Vol 48 (3) ◽  
pp. 1007-1013 ◽  
Author(s):  
T. Lien ◽  
M. Madsen ◽  
F. A. Rainey ◽  
N.-K. Birkeland
Keyword(s):  
North Sea ◽  
Oil Production ◽  
Production Well
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