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Study on the passive film formed on 2205 stainless steel in acetic acid by AAS and XPS
  • ISSN号:1674-4799
  • 期刊名称:International Journal of Minerals Metallurgy and M
  • 时间:0
  • 页码:170-176
  • 语言:英文
  • 分类:O657.31[理学—分析化学;理学—化学] TQ174.758[化学工程—陶瓷工业;化学工程—硅酸盐工业]
  • 作者机构:[1]Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083, China
  • 相关基金:[This study was financially supported by the National Natural Science Foundation of China (No.50871020).]
  • 相关项目:316L不锈钢钝化膜在高温高压水中破裂的电化学机理及对应力腐蚀裂纹萌生的影响规律
中文摘要:

在包含了氯化物离子的高温度在醋酸在 2205 不锈钢上形成的被动电影的性质被原子吸收学习 spectrometry (AAS ) , X 光检查光电子光谱学(XPS ) ,和电气化学的极化大小。AAS 结果证明当被动电影被溶解,那铝在表面上被充实。这丰富减少腐蚀抵抗因为它妨碍氯化物吸附和 Fe 离子溶解,并且充当本地 pH,因为它消费质子,缓冲。Fe/Cr 的溶解比率在被动电影的活跃溶解期间是约 10。XPS 结果显示当潜力在钝化区域时, Cr 在被动电影的近表面的区域包括大约 50% 金属阳离子并且是在这个区域的主要金属成分。当极化潜力比 transpassivation 潜力大得多时,瞬间内容在近表面的区域占约 45% 金属阳离子;Fe 和 Ni 没在被动电影的形成,溶解,或刺上有明显的影响。

英文摘要:

The properties of the passive film formed on 2205 stainless steel in acetic acid at high temperature that contained chloride ions were studied by atomic absorption spectrometry (AAS), X-ray photoelectron spectroscopy (XPS), and electrochemical polarization measurements. AAS results show that molybdenum is enriched on the surface as the passive film is dissolved. This enrichment decreases the corrosion resistance because it hinders chloride adsorption and Fe ion dissolution, and acts as a local pH buffer because it consumes protons. The dissolution ratio of Fe/Cr is approximately 10 during the active dissolution of the passive film. XPS results indicate that when the potential is in the passivation region, Cr comprises about 50% of the metal cations in the near-surface region of the passive film and is the main metal constituent in this region. When the polarization potential is much greater than the transpassivation potential, the Mo content accounts for approximately 45% of the metal cations in the nearurface region; Fe and Ni have no obvious influence on the formation, dissolution, or puncture of the passive film.

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期刊信息
  • 《矿物冶金与材料学报:英文版》
  • 主管单位:教育部
  • 主办单位:北京科技大学
  • 主编:杨天钧
  • 地址:北京市海淀区学院路30号
  • 邮编:100083
  • 邮箱:journal@ustb.edu.cn
  • 电话:010-62332875
  • 国际标准刊号:ISSN:1674-4799
  • 国内统一刊号:ISSN:11-5787/TF
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  • 被引量:113