Corrosion behavior of Ti–Mo alloys cold rolled and heat treated
Corrosion behavior of Ti–Mo alloys cold rolled and heat treated
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DOI：
10.1016/j.jallcom.2011.03.045
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发表时间：
2011-05
影响因子：
6.2
通讯作者：
Yinglong Zhou;D. Luo
中科院分区：
文献类型：
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作者：
Yinglong Zhou;D. Luo
通过研究（α + β）Ti-10 Mo和β Ti-20 Mo（质量分数）合金在5mol%HCl溶液中310 K的阳极极化曲线，研究了经冷轧和固溶热处理后的合金在生物医用材料中的腐蚀行为。利用X射线光电子能谱分析和扫描电子显微镜对合金表面形成的阳极氧化膜进行了研究。结果表明，经冷轧和固溶处理的Ti-Mo合金在5%HCl溶液中均表现出钝化行为，其原因是MoO 3和TiO 2的混合物形成了钝化膜。冷轧工艺虽然使钝化电流密度略有增加，但不影响Ti-Mo合金表面钝化膜的形成。Ti-Mo合金的耐腐蚀性随Mo含量的增加而增加，并且这两种Ti-Mo合金的耐腐蚀性都比目前使用的金属生物材料商业纯钛更好。
Corrosion behavior of (α + β) Ti–10Mo and β Ti–20Mo (mass%) alloys cold rolled and solution heat treated was investigated by studying the anodic polarization curves at 310 K in 5 mol% HCl solution to determine the potential use of those alloys in biomedical applications. The anodic films formed on the surfaces of the alloys were examined using X-ray photoelectron spectroscopy analysis and scanning electron microscopy. The results reveal that both of the Ti–Mo alloys cold rolled and solution treated exhibit a passive behavior in 5% HCl solution, which is attributed to the passive film formation of a mixture of MoO3and TiO2. The cold rolling process does not influence the formation of passive films on the Ti–Mo alloys although it slightly increases the passive current densities. The corrosion resistance of the Ti–Mo alloys increases with Mo content and both of the Ti–Mo alloys exhibit better corrosion resistance than commercial pure Ti—the currently used metallic biomaterial.