Study on Corrosion of Macroporous Silicon in Sodium Hydroxide Solution by Electrochemical Methods and Scanning Electron Microscopy

被引：6

作者：

Lai, Chuan ^{[1
,2
,3
]}

Xiang, Zhen ^{[2
,4
]}

Liu, Changlu ^{[1
]}

Zhu, Chaoju ^{[1
]}

Wang, Hui ^{[1
]}

Zhu, Hui ^{[1
]}

机构：

[1] Sichuan Univ Arts & Sci, Sch Chem & Chem Engn, Dazhou 635000, Peoples R China

[2] Sichuan Univ Sci & Engn, Key Lab Green Catalysis, Sichuan Inst Higher Educ, Zigong 643000, Peoples R China

[3] Sichuan Univ Sci & Engn, Mat Corros & Protect Key Lab Sichuan Prov, Zigong 643000, Peoples R China

[4] Sichuan Univ Sci & Engn, Sch Chem & Pharmaceut Engn, Zigong 643000, Peoples R China

来源：

INTERNATIONAL JOURNAL OF CORROSION | 2015年 / 2015卷

关键词：

D O I：

10.1155/2015/375489

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The fabricated macroporous silicon with a porosity of 26.33% corrosion in NaOH solution was systemically investigated by open circuit potential measurements, linear polarization measurements, potentiodynamic polarization measurements, and scanning electron microscopy, respectively. Results show that the potential open circuit and linear polarization resistance decreases with the NaOH concentration increasing. The corrosion potential shifts significantly to more negative potentials and corrosion current density increases with NaOHconcentration increasing. Adding ethanol to 1.0 M NaOHcan lead to the linear polarization resistance decrease, corrosion potentials shift in the positive direction, and corrosion current density increase. In addition, the scanning electron microscopy images demonstrate that the macroporous silicon samples are seriously damaged by 1.0 M NaOH and 1.0 M NaOH/EtOH (30%).

引用

页数：7

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