Electrochemical corrosion behaviors of commercially pure titanium fabricated by equal channel double angular pressing

ZHANG Xiang; WANG Xiaoxi; ZHU Yingsong; ZHANG Fei; WANG Haibo; LI Lin; LIANG Tingyu

doi:10.7513/j.issn.1004-7638.2025.01.008

Volume 46 Issue 1

Feb. 2025

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ZHANG Xiang, WANG Xiaoxi, ZHU Yingsong, ZHANG Fei, WANG Haibo, LI Lin, LIANG Tingyu. Electrochemical corrosion behaviors of commercially pure titanium fabricated by equal channel double angular pressing[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(1): 53-59. doi: 10.7513/j.issn.1004-7638.2025.01.008

Citation:

ZHANG Xiang, WANG Xiaoxi, ZHU Yingsong, ZHANG Fei, WANG Haibo, LI Lin, LIANG Tingyu. Electrochemical corrosion behaviors of commercially pure titanium fabricated by equal channel double angular pressing[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(1): 53-59. doi: 10.7513/j.issn.1004-7638.2025.01.008

Citation:

ZHANG Xiang, WANG Xiaoxi, ZHU Yingsong, ZHANG Fei, WANG Haibo, LI Lin, LIANG Tingyu. Electrochemical corrosion behaviors of commercially pure titanium fabricated by equal channel double angular pressing[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(1): 53-59. doi: 10.7513/j.issn.1004-7638.2025.01.008

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Electrochemical corrosion behaviors of commercially pure titanium fabricated by equal channel double angular pressing

doi: 10.7513/j.issn.1004-7638.2025.01.008

1.
Jiangsu XCMG Construction Machinery Research Institute Co., Ltd., Xuzhou 221004，Jiangsu, China
2.
School of Mechanical and Electrical Engineering, Xuzhou University of Technology, Xuzhou 221018, Jiangsu, China

Received Date: 2024-02-22
Publish Date: 2025-02-27

Abstract

Abstract

Commercially pure titanium (CP-Ti) was successfully fabricated by 2 passes of equal channel double angular pressing (ECDAP) process under BC route. The electrochemical corrosion behaviors of CP-Ti before and after ECDAP were also tested and analyzed in a 3.5%NaCl solution. The variation laws of circuit potential, dynamic potential polarization curve, and electrochemical impedance were obtained. The microhardness of the deformed specimens was tested and analyzed. The result shows, compared to the original material, the ultra-fine crystalline pure titanium fabricated by ECDAP process has higher microhardness and better corrosion resistance. The microhardness (HV) of the 2-pass deformed sample reaches 157.4 with an increase of 20.6% compared to the original material. The open circuit potential value of the 1-pass deformed sample is higher than that of the original material and lower than that of the 2-pass deformed sample. During the anodizing process, the current of the deformed sample is more stable, and the passivation state is less likely to be destroyed. The polarization resistance results show that the 2-pass deformed sample has the highest polarization resistance, and the sample is less prone to pitting corrosion during the corrosion process. Compared to the deformed samples, the original material has more corrosion pits with larger and deeper sizes on the corrosion surface. The corrosion performance of ECDAP deformed specimens is better than the original annealed sample, and the 2-pass deformed sample shows the best corrosion resistance.
- equal channel double angular pressing,
- commercially pure titanium,
- electrochemical corrosion,
- dynamic potential polarization,
- open circuit potential

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References(17)

References

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