钢铁钒钛2025，Vol.46Issue(1)：53-59,7.DOI:10.7513/j.issn.1004-7638.2025.01.008
等通道双转角挤压工业纯钛的电化学腐蚀行为
Electrochemical corrosion behaviors of commercially pure titanium fabricated by equal channel double angular pressing
摘要
Abstract
Commercially pure titanium(CP-Ti)was successfully fabricated by 2 passes of equal chan-nel double angular pressing(ECDAP)process under BC route.The electrochemical corrosion behavi-ors of CP-Ti before and after ECDAP were also tested and analyzed in a 3.5％NaCl solution.The vari-ation 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 de-formed 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 sur-face.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.关键词
等通道双转角挤压/工业纯钛/电化学腐蚀/动电位极化/开路电位Key words
equal channel double angular pressing/commercially pure titanium/electrochemical corro-sion/dynamic potential polarization/open circuit potential分类
矿业与冶金引用本文复制引用
张翔,王晓溪,朱迎松,张飞,王海波,李林,梁廷玉..等通道双转角挤压工业纯钛的电化学腐蚀行为[J].钢铁钒钛,2025,46(1):53-59,7.基金项目
国家自然科学基金资助项目(51905462) （51905462）
江苏省自然科学基金资助项目(BK20201150、BK20221212) （BK20201150、BK20221212）
江苏省高等学校自然科学研究重大项目(21KJA460007). （21KJA460007）
