钛合金的电化学行为与生物活性研究
毕业论文关键词 钛合金 电化学性能 表面改性 生物活性
Title The electrochemical behavior and bioactivity of the titanium alloy
Abstract
Titanium alloys are the novel metal material developed in recent decades and
good prospects for development in the current society. Titanium alloys exhibit
unique high strength, high corrosion resistance and low density and other excellent
characteristics, with high potential application in aerospace and biomedical
fields. Therefore, the researches on the performance of titanium alloys are
particularly important and necessary.
TiNbTaZr alloy with low young’s modulus and high strength was investigated
in this research. The polarization curves and EIS were carried out in different
solution with different concentration of Cl-
. The effect of phosphate ion in PBS
solution was also studied. The bioactivity of TiNbTaZr was investigated after
pretreatmeat in NaOH solution. It’s found that calcium phosphate layering is
formed on the treated porous surface. The corrosion mechanism and high bioactivity
of TiNbTaZr alloy were discussed.
Keywords Titanium alloy bioactivity Electrochemical performance; Surface treatment;
目 次
1 绪论. 1
1.1 钛合金简介 1
1.2 钛合金的分类 2
1.3 Ti 合金在生物方面的应用 . 3
1.4 钛合金的表面改性 6
1.5 选题目的与研究内容 8
2 实验方法. 10
2.1母合金的制备及结果表征 . 10
2.2 反应溶液配置. 10
2.3 Ti29Nb13Ta4.6Zr 合金的表面处理及形貌分析 . 11
2.4 电化学试验. 11
3 结果讨论与分析. 12
3.1 Ti29Nb13Ta4.6Zr合金的结构 . 12
3.2 Ti29Nb13Ta4.6Zr 合金的电化学行为 . 12
3.3 Ti29Nb13Ta4.6Zr 合金的表面活性分析 . 16
结 论. 22
致 谢. 23
参考文献 24
1 绪论
1.1 钛合金简介
对于钛合金的研究始于 20 世纪早期，第一个成功研制成功并使用受到广泛
认可的合金是Ti-6Al-4V合金。由于它的耐热性、强度、塑性、韧性、成形性、
可焊性、耐蚀性和生物相容性均强与于当下的使用金属，所以一经产出即成为钛
合金中的领衔金属。该合金使用量已占全部钛合金的 75%～85%[1]
。现在的许多
钛合金都是以Ti-6Al-4V合金作为原版进行改进的合金。
随着科技的发展，越来越多的国家加强了对钛合金应用的研究，并取得了实