Study on Cl-Corrosion Behavior of P110H Casing Steel under High Temperature and Pressure
The service environment of casing is becoming more and more complex,and the corrosion behavior of casing in high-temperature and high-pressure Cl-solution needs to be further explored.Therefore,the corrosion simulation experiment was carried out in a high-temperature and high-pressure vacuum reactor,and the corrosion behavior of P110H steel in high-temperature and high-pressure Cl-solution was researched by corrosion loss method,scanning electron microscope,X-ray diffraction and other analytical techniques.The results show that the corrosion of P110 steel is mainly uniform under high temperature and high pressure Cl-environment.At 5MPa,the corrosion rate first decreases and then increases with the increase of temperature.At 10MPa,the corrosion rate reaches the highest at 250℃.At the same temperature,with the increase of pressure,the corrosion of P110H steel in Cl-solution becomes more serious.
P110HCl-solutionhigh temperature and high pressurecorrosion
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