Effects of flow velocity on the corrosion behaviour of super 13Cr stainless steel in ultra-HTHP CO2-H2S coexistence environment

被引：22

作者：

Wang, Yun ^{[1
,2
]}

Wang, Bei ^{[1
,4
]}

Xing, Xijin ^{[3
]}

He, Song ^{[3
]}

Zhang, Lei ^{[1
]}

Lu, Minxu ^{[1
,4
]}

机构：

[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China

[2] Northwest Inst Nonferrous Met Res, Xian 710016, Peoples R China

[3] CNOOC Res Inst, Beijing 100028, Peoples R China

[4] Safetech Res Inst Co Ltd, Beijing 102209, Peoples R China

来源：

CORROSION SCIENCE | 2022年 / 200卷

基金：

中国博士后科学基金;

关键词：

Super 13Cr SS; Ultra-HTHP; Velocity; Pourbaix diagrams; OIL-FIELD ENVIRONMENT; HIGH-TEMPERATURE; PARTIAL-PRESSURE; PIPELINE STEEL; CO2; STRESS; H2S; X65;

D O I：

10.1016/j.corsci.2022.110235

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion behavior of super 13Cr SS under the effect of flow velocity in the ultra-HTHP supercritical CO2-H2S-Cl- environment was investigated. The results show the morphology and composition of the corrosion products of super 13Cr SS samples change with varying flow state. In the static condition, the layer consists of an inner layer of Cr(OH)(3), a middle layer of Fe1_xS, and an outer crystalline FeCO3 layer. However, in the dynamic supercritical CO2 phase, a galvanic couple effect exists between the pyrrhotite and uncovered steel. Meanwhile, the velocity delays the deposition of FeCO3 and promotes the development of pitting.

引用

页数：12

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