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- W2383540012 abstract "Economic low-chromium steels show superior resistance to CO2 corrosion.The corrosion performance of 3%Cr pipeline steel was studied with a high-temperature and high-pressure autoclave.In a CO2 environment,X-ray diffraction(XRD),scanning electron microscopy(SEM) and energy-dispersive spectrometry(EDS) were used to analyze the morphologies and characteristics of corrosion production scales on 3%Cr steel.The formation of the scales at different temperatures was also discussed.The results show that when the CO2 partial pressure is 0.8 MPa and the flow velocity is 1.0m·s-1 within the temperature range of 40 to 140 ℃,the average corrosion rate first increases and then decreases with increasing temperature,and its maximum can be obtained at about 100 ℃.For all the test conditions no localized corrosion was observed.There is a two-layer structure in the scales.The inner layer,which is mainly composed of Cr compounds and amorphous FeCO3,is denser and more stable because of Cr enrichment.The Cr content of the inner layer increases with increasing temperature and the mass ratio of Cr to Fe can reach 8/5.The outer layer is formed from the precipitation of crystalline FeCO3." @default.
- W2383540012 created "2016-06-24" @default.
- W2383540012 creator A5082943828 @default.
- W2383540012 date "2012-01-01" @default.
- W2383540012 modified "2023-09-23" @default.
- W2383540012 title "Effect of temperature on CO_2 corrosion production scales on 3%Cr pipeline steel" @default.
- W2383540012 hasPublicationYear "2012" @default.
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