中文摘要：

把镁合金用作合适的钥匙可被细菌破坏植入是怎么调整他们的降级率。我们报导策略准备 biocompatible 有由在 silicate-K 的 microarc 氧化(毛)的 AZ91D 合金上的改进 biocorrosion 抵抗性质的陶器的涂层<潜水艇class=“ a-plus-plus ”> 2 ZrF <潜水艇class=“ a-plus-plus ”>有或没有 Ca 的 6 答案( H <潜水艇class=“ a-plus-plus ”> 2 PO <潜水艇class=“ a-plus-plus ”> 4 ) ₂ 添加剂。涂层的微观结构和 biocorrosion 被 XRD 和 SEM 描绘，以及电气化学并且模仿的身体液体(SBF ) 的沉浸测试。涂层主要是的结果表演 MgO 创作了， Mg <潜水艇class=“ a-plus-plus ”> 2 SiO <潜水艇class=“ a-plus-plus ”> 4 , m-ZrO <潜水艇class=“ a-plus-plus ”> 2 个阶段，进一步的 Ca 包含混合物由 Ca 包含涂层( H <潜水艇class=“ a-plus-plus ”> 2 PO <潜水艇class=“ a-plus-plus ”> 4 )_{在 silicate-K 的 2} 增加<潜水艇class=“ a-plus-plus ”> 2 ZrF <潜水艇class= a-plus-plus > 6 答案。涂的 AZ91D 合金的腐蚀抵抗显著地与赤裸的相比被改进。在为 28 d 在 SBF 沉浸以后， Si-Zr5-Ca0 涂层显示最好的腐蚀抵抗表演。

英文摘要：

The key to use magnesium alloys as suitable biodegradable implants is how to adjust their degradation rates. We report a strategy to prepare biocompatible ceramic coating with improved biocorrosion resistance property on AZ91D alloy by microarc oxidation （MAO） in a silicate-K2ZrF6 solution with and without Ca（H2PO4）2 additives. The microstructure and biocorrosion of coatings were characterized by XRD and SEM, as well as electrochemical and immersion tests in simulated body fluid （SBF）. The results show that the coatings are mainly composed of MgO, Mg2SiO4, m-ZrO2 phases, further Ca containing compounds involve the coating by Ca（H2PO4）2 addition in the silicate-K2ZrF6 solution. The corrosion resistance of coated AZ91D alloy is significantly improved compared with the bare one. After immersing in SBF for 28 d, the Si-Zr5-CaO coating indicates a best corrosion resistance performance.