scholarly journals Electrochemical Corrosion Behavior of X70 Pipeline Steel in Turbulence Zone under Jet Impingement at High Temperature and High Pressure CO2 Environment

2013 ◽  
Vol 29 (05) ◽  
pp. 1003-1012
Author(s):  
CAI Feng ◽  
◽  
LIU Wei ◽  
FAN Xue-Hua ◽  
ZHANG Jing ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Corrosion Behavior ◽  
Pipeline Steel ◽  
Electrochemical Corrosion ◽  
Jet Impingement ◽  
X70 Pipeline Steel ◽  
Electrochemical Corrosion Behavior

Research on Corrosion Behavior of Copper in Reactor Thermal Hydraulic Test

2017 ◽  
Author(s):  
Haiyan Xu ◽  
Donghua Lu ◽  
Xiaohang Wu ◽  
Qianhua Su
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Corrosion Behavior ◽  
Electrochemical Corrosion ◽  
Severe Accident ◽  
Test Facility ◽  
Hydraulic Test ◽  
State Tests ◽  
Component Design ◽  
Electrochemical Corrosion Behavior

Safety instrument test facility (FITY) is one of the high temperature and high pressure test facilities in CGN. It is designed to conduct tests on thermal-hydraulic of safety system and instruments under the similar condition of reactor severe accident. FITY uses lot of copper components to realize sealing and insulation of vessel. Varies of hot state tests revealed that copper components worked well during the test, however, electrochemical corrosion was found as well, making water quality get worse. This article introduces chemical composition, physical properties and electrochemical corrosion behavior of copper component used in FITY, then analyzes the cause of corrosion and summarizes the notice for electronic component design under high temperature and high pressure conditions.

Electrochemical corrosion behavior of carbon steel under dynamic high pressure H2S/CO2 environment

2012 ◽  
Vol 65 ◽  
pp. 37-47 ◽  
Author(s):  
G.A. Zhang ◽  
Y. Zeng ◽  
X.P. Guo ◽  
F. Jiang ◽  
D.Y. Shi ◽  
...  
Keyword(s):  
High Pressure ◽  
Carbon Steel ◽  
Corrosion Behavior ◽  
Electrochemical Corrosion ◽  
Electrochemical Corrosion Behavior ◽  
Dynamic High Pressure ◽  
Co2 Environment

Study of Electrochemical Behavior, Hydrogen Permeation and Diffusion in Pipeline Steel

2021 ◽  
Vol 1019 ◽  
pp. 145-156
Author(s):  
Swapna Dey ◽  
Seetharaman Sivaprasad ◽  
Nityananda Das ◽  
Indranil Chattoraj
Keyword(s):  
Corrosion Behavior ◽  
Hydrogen Permeation ◽  
Pipeline Steel ◽  
Electrochemical Corrosion ◽  
Hydrogen Distribution ◽  
X70 Pipeline Steel ◽  
Hydrogen Flux ◽  
Hydrogen Damage ◽  
Internal Surfaces ◽  
Neutral Soil

The pipeline steels which are used for transportation of natural gas and crude oil suffer from hydrogen damage at their internal as well as external surfaces. The internal surfaces of pipelines are generally affected due to hydrogen induced cracking and the external surfaces due to the soil environmental conditions which cause stress corrosion cracking. In the present investigation, the electrochemical corrosion behavior of X70 pipeline steel was studied in sour environment and near neutral soil environment. To assess the mechanism of hydrogen damage in steel, electrochemical hydrogen charging and permeation techniques were used to characterize the hydrogen distribution, trapping and its diffusion in X70 pipeline steel. It has been found that corrosion behavior of pipeline steel in the sour environment is higher than the near neutral soil solution. From the hydrogen permeation study it is established that the hydrogen permeation rate increases with the square root of the charging current density, and the increase of hydrogen flux is directly proportional to the subsurface hydrogen concentration.

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