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Advanced Immersion Testing of Model Mg-Alloys for Biomedical Applications

机译：生物医学应用模型Mg-合金的先进浸没试验

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The acceleration of developing magnesium alloys for biomedicine requires the advancement of experimental methods evaluating their performance. We have been developing an advanced immersion testing method for the assessment of biomedical Mg alloy degradation in aqueous environments. It is based on the combination of isothermal calorimetry with pressure measurement in the reaction cell. Such a combination allows in situ quantitative analysis of chemical reactions based on both the enthalpy (heat) of the process itself and hydrogen gas generated as one of the reaction products. Here, we analyze the evolution of the degradation rate of a ternary Mg-5.0Zn-0.3Ca intended for biomedical applications and two model binary Mg-5.0Zn and Mg-0.3Ca alloys (in as-cast and solutionized states) in 0.9% NaCl water solution and a simulated body fluid (SBF). The results obtained using the novel method are critically compared to more traditional immersion testing with hydrogen collection.
机译：生物医学的显影镁合金的加速需要推进实验方法评估其性能。我们一直在开发一种高级浸没试验方法，用于评估水性环境中的生物医学MG合金降解。它基于等温量热法与反应细胞压力测量的组合。这种组合允许基于工艺本身的焓（热量）和作为反应产物之一产生的氢气的焓（热量）来定量分析化学反应。在这里，我们分析了用于生物医学应用的三元Mg-5.0zn-0.3ca的降解率的演变，以及两种模型二元Mg-5.0zn和Mg-0.3ca合金（以浇铸和溶液和溶解的状态）的型号为0.9％ NaCl水溶液和模拟体液（SBF）。使用新方法获得的结果与具有氢收集的更传统的浸没试验相比，得到的结果。

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