生物医用ZTM630镁合金微弧氧化表面改性研究

为了进一步优化生物医用镁合金的耐蚀性能，满足临床使用要求，对新型生物医用高强韧ZTM630镁合金进行了微弧氧化表面改性处理。分别制备了氧化时间为2、5、8和15 min的微弧氧化试样，并对其组织结构和耐腐蚀性能进行了表征和分析。结果发现：随着氧化时间的延长，涂层厚度与表面粗糙度均呈现增高的趋势；当氧化时间为5 min时，试样表现出最强的耐蚀性。研究表明，微弧氧化时间的合理调控对于生物医用镁合金耐蚀性的提高具有重要的意义。

Surface modification of ZTM630 magnesium alloy by micro-arc oxidation

To further optimize the corrosion resistance of biomedical magnesium alloys and meet clinical use requirements, surface modification was performed on a novel biomedical ZTM630 magnesium alloy with high strength and toughness via micro-arc oxidation. Micro-arc oxidized samples with oxidation times of 2, 5, 8, and 15 min were prepared, and their microstructure and corrosion resistance were characterized and analyzed. Results show that coating thickness and surface roughness increased with the extension of oxidation time. However, the samples showed the highest corrosion resistance when oxidation time was 5 min. This study shows that the reasonable regulation of micro-arc oxidation time is of great significance in the improvement of corrosion resistance of the biomedical magnesium alloy.