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| N80油套管钢CO2腐蚀产物膜特征 | |
| 引用本文： | 陈长风,路民旭,赵国仙,白真权,严密林,杨延清.N80油套管钢CO2腐蚀产物膜特征[J].金属学报,2002,38(4):411-416. |
| 作者姓名： | 陈长风 路民旭 赵国仙 白真权 严密林 杨延清 |
| 作者单位： | 1. 中国石油天然气集团公司管材研究所,西安,710065;西北工业大学材料科学与工程学院,西安,710072 2. 中国石油天然气集团公司管材研究所,西安,710065 3. 西北工业大学材料科学与工程学院,西安,710072 |
| 基金项目： | 国家重点基础研究发展规划项目 G19990650，中国石油天然气集团公司石油管力学和环境行为重点实验室基金项目资助~~ |
| 摘 要： | 在模拟的油田高温高压现场环境下研究了普通N80级油套管钢和含4％－5％Cr的N80油套管钢CO2腐蚀产物膜结构和离子选择性特征。结果表明，普通N80油套管钢形成的FeCO3腐蚀产物膜具有阴离子选择透过性，这种特征对基体保护性较差，且容易诱发点蚀：含4％－5％Cr的N80油套管钢形成的Cr(OH)3非晶态腐蚀产物膜具有阳离子选择透过性，它不仅可以显著降低腐蚀速率，而且可以抑制点蚀的发生。 |
| 关 键 词： | 油套管钢 腐蚀产物膜 离子选择性 二氧化硫腐蚀 |
| 文章编号： | 0412-1961(2002)04-0411-06 |
| 修稿时间： | 2001年6月15日 |
CHARACTERS OF CO2 CORROSION SCALES ON WELL TUBE STEELS N80 |
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| CHEN Changfeng,LU Minxu,ZHAO Guoxian,BAI Zhenquan,YAN Milin,YANG Yanqing Tubular Goods Research Center,China National Petroleum Corporation,Xi'an School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an.CHARACTERS OF CO2 CORROSION SCALES ON WELL TUBE STEELS N80[J].Acta Metallurgica Sinica,2002,38(4):411-416. | |
| Authors: | CHEN Changfeng LU Minxu ZHAO Guoxian BAI Zhenquan YAN Milin YANG Yanqing Tubular Goods Research Center China National Petroleum Corporation Xi'an School of Materials Science and Engineering Northwestern Polytechnical University Xi'an |
| Affiliation: | CHEN Changfeng,LU Minxu,ZHAO Guoxian,BAI Zhenquan,YAN Milin,YANG Yanqing Tubular Goods Research Center,China National Petroleum Corporation,Xi'an 710065 School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an 7 |
| Abstract: | In the simulating oilfield downhole corrosive environment with high temperature-high pressure, the structure characteristics and ion selectivity of the CO2 corrosion scale on general N80 steel and 4%-5%Cr N80 steel were studied. The experimental results indicated that the FeCO3 corrosion scale formed on the general N80 steel surface has anion passing selectivity, which could not protect matrix effectively and would enhance the formation of pitting, and the amorphous compound Cr(OH)3 film formed on the 4%-5%Cr containing N80 steel surface has cation passing-selectivity, which could not only reduce the corrosion rate but also prevent the formation of pitting. |
| Keywords: | CO2 corrosion corrosion scale Cr-containing N80 steel ion-selectivity |
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