Flow-accelerated corrosion behavior of 13Cr stainless steel in a wet gas environment containing CO_2

作     者：Yong Li Min-dong Chen Jian-kuan Li Long-fei Song Xin Zhang Zhi-yong Liu Yong Li;Min-dong Chen;Jian-kuan Li;Long-fei Song;Xin Zhang;Zhi-yong Liu

作者机构：Corrosion and Protection CentreKey Laboratory for Corrosion and Protection（MOE）National Environmental Corrosion Platform（NECP）University of Science and Technology BeijingBeijing 100083China Nuclear and Radiation Safety CenterMinistry of Environmental Protection of P.R.ChinaBeijing 100082China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2018年第25卷第7期

页      面：779-787页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Environmental Corrosion Platform (NECP) the National Key Technology R&D Program of China (No. 2011BAK06B01-01-02) the Fundamental Research Funds for the Central Universities of china (No. FRF-BR-17-028A) 

主　　题：flow-accelerated corrosion jet loop flowing velocity impact magle C02 

摘      要：This work investigated the flow-accelerated corrosion （FAC） behavior of 13Cr in a wet CO2-containing environment at different flowing gas velocities mid impinging mlgles, with the natural-gas pipeline environment simulated by a self-assembled impingement jet sys- tem. Surface molphology determination, electrochemical measurements, mid hydromechaziics numerical analysis were cmlied out to study the FAC behavior. The results demonstrate that pitting corrosion was the primary mode of corrosion in 13Cr stainless steel. High-flow-rate gas destroyed the passive film mid decreased the pitting potential, resulting in more serious corrosion. The corrosion degree witk various im- pact mlgles showed the following order： 90~ 〉 60~ 〉 45~. The shear force and the electrolyte from the flowing gas were concluded to be the determinm^t factors of FAC, whereas the shear force was the main factor responsible for destroying the passive film.