[1]宋 帅,顾 洋,袁 睿,等.不同Cr含量对低Cr钢耐CO2腐蚀行为的影响[J].焊管,2019,42(4):13-19.[doi:10.19291/j.cnki.1001-3938.2019.4.003]
 SONG Shuai,GU Yang,YUAN Rui,et al.Effect of Different Cr Content on CO2 Corrosion Resistance of Low Cr Steel[J].,2019,42(4):13-19.[doi:10.19291/j.cnki.1001-3938.2019.4.003]
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不同Cr含量对低Cr钢耐CO2腐蚀行为的影响()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
42
期数:
2019年第4期
页码:
13-19
栏目:
试验与研究
出版日期:
2019-04-28

文章信息/Info

Title:
Effect of Different Cr Content on CO2 Corrosion Resistance of Low Cr Steel
文章编号:
10.19291/j.cnki.1001-3938.2019.4.003
作者:
宋 帅顾 洋袁 睿武会宾
北京科技大学, 北京 100083
Author(s):
SONG Shuai GU Yang YUAN Rui WU Huibin
University of Science and Technology Beijing, Beijing 100083, China
关键词:
低Cr钢CO2腐蚀Cr含量腐蚀产物
Keywords:
low Cr steel CO2 corrosion Cr content corrosion products
分类号:
TG113.231
DOI:
10.19291/j.cnki.1001-3938.2019.4.003
文献标志码:
A
摘要:
为了研究不同Cr含量对低Cr钢耐CO2腐蚀性能的影响,采用挂片失重法和模拟输油管道CO2腐蚀试验,结合EDS和EBSD分析技术,研究了不同Cr含量对低Cr钢在CO2驱油服役环境下腐蚀性能的影响。试验结果显示,随着Cr含量的增加,平均腐蚀速率下降明显,动态腐蚀速率明显高于静态腐蚀。研究表明,含Cr钢在初期CO2腐蚀过程中,会伴随产生Cr(OH)3,该化合物会改变腐蚀产物膜的致密性,从而减缓腐蚀,并且在一定Cr含量范围内,随着Cr含量的增加,组织中小角度晶界的比例也增大,可见Cr含量的增加对于低Cr钢抗CO2腐蚀能力有显著的促进作用。
Abstract:
In order to study the effects of different Cr content on CO2 corrosion resistance of low Cr steel,using the weight loss method combined with EDS and EBSD analysis, the effects of different Cr content on the corrosion performance of low Cr steel in CO2 flooding service environment were studied. The results showed that with the increase of Cr content, the average corrosion rate decreased obviously, the corrosion rate of dynamic corrosion was significantly higher than static corrosion. The research indicated that in the initial CO2 corrosion process of Cr steel, Cr(OH)3 was accompanied,the compound of it would change the densification of the corrosion product film, so as to slow down the corrosion,and within a certain range of Cr content, the proportion of grain boundary of medium and small angles of microstructure also increased with the addition of Cr. It could be seen that the  increase of Cr content had an obvious positive effect on the CO2 corrosion resistance of low Cr steel.

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备注/Memo

备注/Memo:

收稿日期:2019-01-29

基金项目: 国家重点研发计划“低温高压服役条件下高强度管线用钢”(项目编号2017YFB0304900)。
作者简介:宋 帅(1994—),男,硕士研究生在读,目前主要进行高强度管线钢方面的研究。

更新日期/Last Update: 2019-05-10