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首页> 外文期刊>International Journal of Electrochemical Science >Dynamical Behavior of Electrochemical Noise Associated to Corrosion Resistance of Ti-6Al-4V Alloy
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Dynamical Behavior of Electrochemical Noise Associated to Corrosion Resistance of Ti-6Al-4V Alloy

机译：Ti-6Al-4V合金与腐蚀相关的电化学噪声的动力学行为

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This research work presents the analysis of the dynamical behavior of electrochemical noise from Ti- 6Al-4V alloy samples by reconstruction of recurrence plots (RP) and calculation of quantitative RP indexes. The aim was to evaluate the association between RP indexes and the corrosion resistance of Ti-6Al-4V. The study included electrochemical noise time series from 27 samples of Ti-6Al-4V alloy prepared under diverse conditions (milling time, sintered or green samples) and exposed to Hanks’ or Ringer’s solution. Voltage RP indexes were found to be different depending on the sintering method and type of exposure solution, but there were no differences among current RP indexes. Corrosion resistance were also correlated with RP indexes depending on type of sintering, solution and trend removal method. Voltage time series with polynomial trend removal had correlations with corrosion resistance only in the green samples exposed to Ringer’s solution: high corrosion resistance was associated with less determinism (fewer diagonal lines but longer). In contrast, voltage time series with trend removal showed that corrosion resistance was associated with more stationary episodes (more trapping time and larger vertical lines). RP indexes may be useful to identify conditions of preparation and exposure that yield higher corrosion resistance to Ti-6Al-4V.
机译：这项研究工作通过重建递归图（RP）和计算定量RP指标，对Ti-6Al-4V合金样品中电化学噪声的动力学行为进行了分析。目的是评估RP指数与Ti-6Al-4V的耐蚀性之间的关系。该研究包括在不同条件下（铣削时间，烧结或生坯样品）制备的27种Ti-6Al-4V合金样品的电化学噪声时间序列，并将其暴露于Hanks或Ringer溶液中。发现电压RP指数根据烧结方法和曝光溶液的类型而不同，但是当前RP指数之间没有差异。取决于烧结类型，溶液和趋势消除方法，耐蚀性也与RP指数相关。电压时间序列具有多项式趋势消除功能，仅在暴露于林格氏溶液的绿色样品中与耐腐蚀性相关：高耐腐蚀性与确定性相关（对角线较少，但更长）。相反，带有趋势消除的电压时间序列表明，耐蚀性与更多的静止事件（更多的陷印时间和更大的垂直线）相关。 RP指数可能有助于确定制备和暴露条件，这些条件可提高对Ti-6Al-4V的耐蚀性。

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