Abstract

Three different orientation specimens (P-ND30, P-ND60 and P-TD) prepared from the rolled AZ80 magnesium alloy plates were immersed in simulated body fluid (SBF) for 384 h. Electrochemical impedance spectroscopy (EIS) tests were measured at 24 h, 96 h, 192 h, 288 h, and 384 h during immersion. The corrosion morphology and chemical composition of the three orientation specimens were investigated using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). X-ray diffractometer (XRD) was used to evaluate the phase composition of the surface of the specimen at different immersion stages. The results indicated that the P-ND30 and P-ND60 specimens had similar corrosion behavior. The P-TD specimen showed the best corrosion resistance. A degradation evolution model was established, and the effect of initial orientation on corrosion behavior was discussed.

Graphic Abstract

中文翻译：

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初始取向对AZ80镁合金在模拟体液中腐蚀行为的影响

摘要

将由轧制的 AZ80 镁合金板制备的三种不同取向的试样（P-ND30、P-ND60 和 P-TD）浸入模拟体液（SBF）中 384 小时。电化学阻抗谱 (EIS) 测试在浸泡过程中的 24 小时、96 小时、192 小时、288 小时和 384 小时进行测量。使用扫描电子显微镜 (SEM) 和能量色散谱 (EDS) 研究了三个取向试样的腐蚀形态和化学成分。X射线衍射仪（XRD）用于评估不同浸渍阶段试样表面的相组成。结果表明，P-ND30 和 P-ND60 试样具有相似的腐蚀行为。P-TD 试样表现出最好的耐腐蚀性。建立了退化演化模型，

图形摘要