Electrochemical and corrosion behavior of Ti–xAl–yFe alloys prepared by direct metal deposition method
Electrochemical and corrosion behavior of Ti–xAl–yFe alloys prepared by direct metal deposition method
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DOI：
10.1016/j.electacta.2005.07.024
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发表时间：
2006-02
影响因子：
6.6
通讯作者：
N. Pimenova;T. Starr
中科院分区：
文献类型：
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作者：
N. Pimenova;T. Starr
研究了钛基合金的电化学和腐蚀行为。采用直接金属沉积技术制备了21种不同金属含量（0≤Al≤ 27 wt.%，0≤Fe≤ 25重量%）。通过在模拟人体体液条件（Hank溶液）中进行伏安测量，定性和定量地评估每种合金的耐腐蚀性。采用Tafel外推法比较了材料在Hank溶液中的腐蚀速率。在Ti-xAl-yFe合金中，Ti-7Al-4Fe合金的腐蚀速率最慢，为7.7×10− 4 mm/年，钝化电流密度最小，为6.3×10−3A/m2。该合金也耐点蚀。
The electrochemical and corrosion behavior of Ti-based alloys was investigated. The direct metal deposition technique was used to fabricate 21 alloys with different ratio of metals (0≤Al≤27wt.%, 0≤Fe≤25wt.%). Corrosion resistance of each alloy was evaluated both qualitatively and quantitatively by voltammetric measurements in the simulated human body fluid conditions (Hank's solution). The corrosion rates of the materials were compared in Hank's solution using Tafel extrapolation method. Among the Ti–xAl–yFe alloys the Ti–7Al–4Fe alloy exhibited the slowest corrosion rate of 7.7×10−4mm/year and the least value of passive current density (6.3×10−3A/m2). The alloy is resistant to pitting corrosion as well.