人工模拟体液中Ti,Ti-6Al-4V合金和Ti-Ni形状记忆合金的缝隙腐蚀行为（英文）

发布时间：2018-02-20 23:58

本文关键词： 工业纯钛 Ti-Al-V Ti-Ni SMA Ringer’s人工体液缝隙腐蚀　出处：《稀有金属材料与工程》2015年04期 　论文类型：期刊论文

【摘要】：采用电化学方法研究了工业纯钛、Ti-6Al-4V合金和Ti-Ni SMA在Ringer’s人工模拟体液中缝隙腐蚀行为。Ringer’s人工体液中恒电位400 m V的试验结果表明,工业纯钛、Ti-6Al-4V合金和Ti-Ni SMA缝隙试样均发生缝隙腐蚀,随着介质温度的升高,缝隙腐蚀倾向加剧。在Ringer’s人工模拟体液中Ti-6Al-4V合金的腐蚀电位较正,反应电阻增大,阳极极化性能优于工业纯钛和Ti-Ni SMA,提高了抗缝隙腐蚀性能。在Ringer’s人工模拟体液中推导出工业纯钛、Ti-6Al-4V合金和Ti-Ni SMA缝隙试样的缝隙腐蚀动力学方程为:iT,CPTi=0.028 e-2×10-4 t,iT,Ti-6Al-4V=0.0149 e-3×10-4 t,和iT,Ti-Ni SMA=0.4712 e-7×10-4 t表明缝隙腐蚀过程受缝隙表面氯化物盐膜的溶解控制。
[Abstract]:The crevice corrosion behavior of Ti-6Al-4V alloy and Ti-Ni SMA in artificial simulated body fluid of Ringer's was studied by electrochemical method. The results showed that crack corrosion occurred in commercial pure titanium Ti-6Al-4V alloy and Ti-Ni SMA gap sample. With the increase of the temperature of the medium, the crevice corrosion tendency is aggravated. The corrosion potential of Ti-6Al-4V alloy is more positive and the reaction resistance increases in the artificial simulated body fluid of Ringer's. The slot corrosion resistance of Ti-6Al-4V alloy and Ti-Ni SMA slotted specimen was deduced from Ringer's artificial simulated body fluid. The kinetic equation of slit corrosion of commercial pure titanium alloy Ti-6Al-4V alloy and Ti-Ni SMA was 0.028e-2 脳 10-4 tTttttttttttttttttntttttnttnttncncncncncncncngncncncncncncncncncncncncncncncncncnological equation of slot corrosion. SMA=0.4712 e-7 脳 10 ~ (-4) t indicates that the crevice corrosion process is controlled by the dissolution of chloride film on the crevice surface.
【作者单位】：大连海事大学;大连民族学院;
【基金】：National High Technology Research and Development Program of China(“863”Program)(2009AA05Z120)
【分类号】：TG172;TG146.23

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