Passivation of X65 (UNS K03014) carbon steel in NaHCO3 solution in a CO2 environment

被引：21
|
作者：
Xu, Lining [1 ]
Xiao, Hui [1 ]
Shang, Weijing [1 ]
Wang, Bei [1 ]
Zhu, Jinyang [1 ]
机构：
[1] Univ Sci & Technol Beijing, Ctr Corros & Protect, Key Lab Environm Fracture MOE, Inst Adv Mat & Technol, Beijing 100083, Peoples R China
来源：
CORROSION SCIENCE | 2016年 / 109卷
关键词：
CO2; corrosion; X65; steel; pH stabilization; Sodium bicarbonate; Passivation; STRESS-CORROSION CRACKING; X80 PIPELINE STEEL; PITTING CORROSION; SCALE FORMATION; MILD-STEEL; BICARBONATE; BEHAVIOR; IRON; TEMPERATURE; PH;
D O I：
10.1016/j.corsci.2016.04.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, the use of NaHCO3 as a pH stabilizer for the corrosion control of X65 (UNS K03014) carbon steel in different environments was experimentally investigated. The experiments were conducted at room temperature and at 50 degrees C in 0.5 M NaHCO3 solutions purged with CO2. Electrochemical tests were conducted in a high-pressure, high-temperature autoclave. The constituents of the corrosion products were investigated through scanning electron microscopy and X-ray diffraction. The results showed that X65 steel can be passivated in 0.5 M NaHCO3 solution in a CO2 environment. Immersion in 0.5 M NaHCO3 solution in a high-pressure, high-temperature autoclave resulted in the formation of a dense corrosion film on the surface of the X65 steel. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：246 / 256
页数：11
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