|
|||||
|
|
| 镍基合金和铬在高温下的腐蚀电化学特征 | |
| 引用本文： | 谢丽华,陈长风,李鹤林,井奉军,李晟伊.镍基合金和铬在高温下的腐蚀电化学特征[J].西安石油大学学报(自然科学版),2012,27(2):76-79,121,122. |
| 作者姓名： | 谢丽华 陈长风 李鹤林 井奉军 李晟伊 |
| 作者单位： | 1. 中国石油大学(北京)机械与储运工程学院,北京,102249 2. 中国石油大学(北京)理学院,北京,102249 3. 中国石油集团石油管工程技术研究院,陕西西安,710065 |
| 基金项目： | 国家自然科学基金项目(编号:50871122) |
| 摘 要： | 利用动电位极化和电化学阻抗(EIS)方法,分别研究了纯铬以及镍基合金UNS N08028在140℃和160℃两种温度下高含H2S/CO2环境所成钝化膜的电化学行为.结果表明:两种成膜条件下028合金钝化膜的耐蚀性优于纯铬.EIS表明电化学阻抗谱均有明显的容抗弧特征,028合金显示单一的容抗弧,纯铬在低频区显示扩散阻抗控制. |
| 关 键 词： | 镍基合金 铬 高温高压腐蚀 电化学阻抗谱 钝化膜 耐蚀性 |
Electrochemical characteristics of high-temperature corrosion of alloy UNS N08028 and pure chromium |
|
| XIE Li-hua,CHEN Chang-feng,LI He-lin,JING Feng-jun,LI Sheng-yi.Electrochemical characteristics of high-temperature corrosion of alloy UNS N08028 and pure chromium[J].Journal of Xian Shiyou University,2012,27(2):76-79,121,122. | |
| Authors: | XIE Li-hua CHEN Chang-feng LI He-lin JING Feng-jun LI Sheng-yi |
| Institution: | 1.Faculty of Mechanical and Oil-Gas Storage and Transportation Engineering,China University of Petroleum(Beijing),Beijing 102249,China;2.College of Sciences,China University of Petroleum(Beijing),Beijing 102249,China;3.Tubular Goods Research Institute,CNPC,Xi’an 710065,Shaanxi,China) |
| Abstract: | Electrochemical behaviors of passive films formed on the surface of nickel-base alloy UNS N08028 and pure chromium in high pressure environment containing H2S/CO2 at 140 ℃ and 160 ℃ respectively were examined by means of potentiodynamic polarization and electrochemical impedance spectroscopy(EIS).The results show that the passive film of alloy 028 has a better corrosion resistance than that of pure chromium.EIS measurement indicates that the Nyquist plot of alloy 028 is composed of single capacitance loop,and the plot of pure chromium revealed the corrosion characteristics of diffuse control at low frequency. |
| Keywords: | nickel-base alloys pure chromium high temperature and high pressure corrosion electrochemical impedance spectroscopy passive film corrosion resistance |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |