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1)  anti-CO2 corrosion
抗CO2腐蚀
2)  CO2 corrosion
CO2腐蚀
1.
Polarization resistance measurement,electrochemical impedance spectroscopy(EIS) and SEM observation were used to investigate the effect of calcium ions on the formation process and the protective performance of the corrosion product scale on NC-55E steel during CO2 corrosion at 80℃.
通过线性极化、电化学阻抗谱测试和SEM观察,研究了80℃条件下Ca2+浓度对NC-55E套管钢CO2腐蚀产物膜的形成过程及其保护性能的影响。
2.
The CO2 corrosion is widely found in oil and gas industries,and has been a research topic for a long time.
在模拟油田CO2腐蚀环境下,利用失重法、极化曲线及交流阻抗技术研究了X65钢在不同腐蚀时间和不同温度下形成的腐蚀产物膜特征。
3.
The CO2 corrosion behavior of N80 steel in stratum water with saturated CO2 under tension,compression and bending stress conditions,was investigated by electrochemical impedance spectra.
随着三种状态下应变的增加,感抗弧逐渐扩大,而低频容抗弧则逐渐缩小,表明应力状态下N80钢的CO2腐蚀会加剧。
3)  carbon dioxide corrosion
CO2腐蚀
1.
The carbon dioxide corrosion experiments at high temperature and high pressure of ordinary 13Cr steel were done at the environment of DA QING oil field.
采用SEM、EDS和XPS测试手段分析研究所获得CO2腐蚀产物膜的形貌和化学组成。
2.
The carbon dioxide corrosion experiments of 13Cr and N80 steel in liquid phase are carried out under high temperature and high pressure simulating the environment of Daqing oil field.
在我国,CO2腐蚀已导致多起重大事故,经济损失十分严重。
3.
Recent developments in carbon dioxide corrosion of N80 well tube steel,the key factors of corrosion and research directions for the future are reviewed in the article.
综述了N80油套管钢CO2腐蚀的研究进展,提供了N80油套管钢腐蚀发生的最关键影响因素,提出了进一步研究的方向。
4)  CO_2 corrosion
CO2腐蚀
1.
The impedance spectroscopies of CO_2 corrosion process formed on N80 steel in saturated stratum water with saturated CO_2 environment,were detected using electrochemical impedance spectroscopy(EIS).
应用电化学阻抗谱研究了N80钢在饱和CO2的模拟地层水中CO2腐蚀过程的电化学行为。
2.
e,weight) of the factors affecting CO_2 corrosion of steels is a key for corrosion prediction and protection.
为此,本工作采用层次分析法,结合相关文献给出了影响因素的权重集,以定量的形式确定了CO2腐蚀影响因素的相对重要度。
3.
CO_2 corrosion behaviors of KO110 and 3Cr110 steels were studied in a simulated environment.
在模拟油田CO2腐蚀环境下,对KO110钢和3Cr110钢的腐蚀特征进行研究并加以比较。
5)  CO_2/H_2S corrosion
CO2/H2S腐蚀
1.
In order to find out the relation between corrosion time and the cathode reaction of CO_2/H_2S corrosion of tubular steels,a autoclave,together with EIS,is used to study the cathode process of CO_2/H_2S corrosion of tubular steel N80 in simulated oil well produced water under 180psi CO_2 and 2psi H_2S at 100 ℃.
为了找出油管钢CO2/H2S腐蚀的阴极反应与腐蚀时间的关系,采用高温高压釜装置,辅以交流阻抗谱(EIS)测试技术,在100℃时,CO2分压180 psi和H2S分压2 psi的条件下,对N80油管钢在模拟油田采出液中CO2/H2S腐蚀的阴极过程进行了研究。
2.
Autoclave test,together with weight loss method,XRD,SEM and EDS,were used to study CO_2/H_2S corrosion behavior of tubular steel P110 in simulated oil well produced water at 90 ℃.
采用高温高压釜试验,辅以失重法、X射线衍射、扫描电镜和电子能谱分析,对90℃时油管钢P110在模拟油井采出液中的CO2/H2S腐蚀行为进行了研究。
6)  CO 2 corrosion
CO2腐蚀
补充资料:斑点腐蚀
分子式:
CAS号:

性质:又称坑蚀,斑点腐蚀,小孔腐蚀或点蚀。金属表面大部分区域腐蚀相对较轻,而某些局部出现向纵深发展的腐蚀小孔的腐蚀形态。孔蚀的原因是活性阴离子导致表面钝化膜局部破坏。具有钝化能力的金属如不锈钢、铝合金及碳钢等,在含氯离子介质中经常发生孔蚀。蚀孔的发展速度有时很快,可以深入金属甚至短时间内蚀穿金属截面,且较难预测,因此孔蚀往往比均匀腐蚀具有更大的危害性。可以通过降低介质中的有害阴离子浓度,采用涂层保护、添加缓蚀剂和阴极保护等方法予以减轻或防止。

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