检索结果-南通市图书馆

Electrochemical Behavior of Stainless Steel under High-Temperature and High-Pressure Methanol Solution Containing Oxygen and Chloride Ions

引用

材料科学与工程（中英文B版） 2011年第7期1卷 861-870页

作者： Daisuke Shintani Toshio Ishida Yoshiaki Matsuo yosohiro sugie Kimura Chemical Plant Co. Ltd 2-1-2 Terashima Kuise Amagasaki Hyogo 660-8567 Japan School of Engineering Department of Materials Science and Engineering University of Hyodo 2167 Shosha Himeji Hyogo 671-2280 Japan

The effect of oxygen and water in a methanol solution containing 0.42 wt% LiCl on the corrosion behavior of Type 316L stainless steel was evaluated by anodic polarization and electrochemical impedance spectroscopy (EIS) at 423 K and 473 K. The Ecorr values in an aerated methanol solution decreased with immersion time and became almost the same as that observed in a deaerated methanol solution after 5 h. The dissolved oxygen molecules temporarily improved the corrosion resistance, judging from the increase in Ea (anodic dissolution potential). This effect of oxygen molecules was not observed with the immersion time, consequently the anodic polarization curve became almost similar to that obtained in the absence of them. While the localized tarnish was observed in the aerated methanol solution with lower water contents, many pits formed when the water content increased. At 423 K, a corrosive effect of oxygen in the methanol solution was exhibited in the presence of water and pitting corrosion and autocatalytic reaction were observed. On the other hand, no corrosion occurred at 473 K, regardless of the oxygen and water concentrations.

关键词： 316L不锈钢甲醇溶液电化学行为氧气离子对阳极极化曲线水分含量高压

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Analysis of Film Generated on Various Stainless Steel Surfaces in Soy Sauce by EIS and XPS

引用

材料科学与工程（中英文B版） 2011年第7期1卷 879-890页

作者： Hidenori Fujii Yasuyuki Takatani Yoshiaki Matsuo yosohiro sugie Department of Applied Chemistry Graduate School of Engineering University of Hyogo 2167 Shosha Himeji Hyogo 671-2280 Japan Hyogo Prefectural Institute of Technology 3-1-12 Yukihira Suma Kobe Hyogo 654-0037 Japan

This paper was developed the passivation phenomenon for various stainless steels in soy sauce by evaluation for the electrochemical impedance characteristic and the distribution of elements in the specimens measured by X-ray photoelectron spectroscopy. It is possible to show a passivation phenomenon using the electrical equivalent circuit that is assumed consisting of a series connection of two parallel RC circuits and a resistance of solution. By equivalent circuit analysis, the resistance of passive film and the corrosion resistance values of duplex stainless steels are 10 times higher than that of the austenitic stainless steels, the duplex stainless steels are superior in corrosion resistance to the austenitic stainless steels in soy sauce. In stainless steels with higher corrosion resistance, as for the element distribution in the passive film that had been generated to the stainless-steel surface, it was shown that Cr was concentrated to an outermost surface of the film by the X-ray photoelectron spectroscopy (XPS) analysis. And, the thickness of the passive film is thinner. When the high local Cr concentration is generated at the outermost surface of passive firm thus leading to the increase of the film resistance value, its corrosion resistance is enhanced, the corrosion current becomes smaller and corrosion resistance is heightened. The ratio of concentration of Cr is proportional to its film resistance value as well as its charge transfer resistance.

关键词：奥氏体不锈钢 XPS分析表面生成酱油 X射线光电子能谱 EIS 耐腐蚀性能双相不锈钢

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Corrosion Behavior of Various Stainless Steels in Soy Sauce Manufacturing Plants

引用

材料科学与工程（中英文版） 2011年第5期5卷 570-576页

作者： Hidenori Fujii Taichi Asano Yoshiaki Matsuo yosohiro sugie Department of Materials Science and Chemistry Graduate School of Engineering University of Hyogo 2167 Shosha Himeji Hyogo 671-2280 Japan

The corrosion resistance of various stainless steels was investigated in soy sauce by an electrochemical polarization method at various temperatures and it was compared with that observed in an 18% NaCl solution. The duplex stainless steels showed much higher corrosion resistance than that of austenitic stainless steels even at elevated temperatures. Among the duplex stainless steels S39274 showed highest corrosion resistivity. The organic compounds in soy sauce gave little effect on the corrosion behavior of stainless steels though they considerably reduced the passivation current at 368K. A new pitting resistance equivalent parameter which includes a higher contribution of N and the effect of Ni and W was proposed and it predicted more precisely the corrosion resistance of pitting corrosion of stainless steels in soy sauce, especially at high temperatures. The surface of the pits formed on the duplex stainless steels was rougher than those formed on austenitic stainless steels. This was ascribed to the selective dissolution of α phase.

关键词：不锈钢厂酱油生产腐蚀行为奥氏体不锈钢耐腐蚀性能双相不锈钢 NaCl溶液有机化合物

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：