摘要
采用恒电位极化法研究了Ti-15Mo-2.7Nb-3Al-0.25Si合金的表面改性工艺,并测试了该合金在Ring′s模拟体液中的体外耐腐蚀性能。结果表明,随极化电压升高,氧化膜稳定速度加快,氧化膜电阻值随电解液浓度的增加呈单峰曲线变化,且随处理时间的延长逐渐达到稳态;在处理电压为10V、处理时间为30min、HF酸浓度为2%时,合金表面所形成的氧化膜稳定,其结构为网状并形成微米孔隙,表现出良好的耐腐蚀性。
The surface modification process of the Ti-15Mo-2.7Nb-3A1-0. 25Si alloy was studied by potentiosta- tic polarization. The corrosion resistance of the alloy was tested in Ring＇s simulated body fluid. Results showed that the stability of the oxide film increased with the voltage elevating. Oxide film resistance took on a single peak curve with the electrolyte concentration increasing, and approached stability with the processing time prolonging. The alloy had a stability oxide film, mesh and micron pore structure and good corrosion resistance under the following condi- tions： voltage 10V, processing time 30rain, concentration of HF 2%.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2012年第18期30-33,共4页
Materials Reports
基金
国家重点基础研究开发计划(2012CB619101)
关键词
钛合金
表面改性
极化曲线
腐蚀
titanium alloy, surface modification, polarization curves, corrosion
