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Updated: Jan 30, 2026

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在Ti6Al4V 通过软化火花MAO上具有双重骨质生成和抗腐蚀功能的空间定义的Sr/Zn梯度涂层
Yiting Hao1, Liwei Ning1, Jun Fu1
1College of Mechanical and Energy Engineering, Shaoyang University Shaoyang 422000 China 18873994427@163.com 919513838@qq.com.
RSC advances
|January 29, 2026
概括
这项研究使用一种新的软化火花微弧氧化 (S-MAO) 方法改进了合金 (Ti6Al4V) 涂层. 新的复合涂层为医疗植入物提供了增强的耐腐蚀性和更好的细胞兼容性.
科学领域:
- 生物材料工程 生物材料工程
- 表面科学是一门学科.
- 腐蚀科学 腐蚀科学
背景情况:
- 在Ti6Al4V植入物上的微弧氧化 (MAO) 涂层面临着相互连接的孔隙和长期耐腐蚀性差的挑战.
- 现有的MAO技术往往会导致低于最佳的涂层结构,从而损害植入物的寿命和性能.
研究的目的:
- 在Ti6Al4V上制造先进的复合MAO涂层,使用软化火花MAO (S-MAO) 技术与Sr2+/Zn2+复合相结合.
- 为了提高MAO涂层的结构完整性,耐腐蚀性和生物特性,用于增强植入物应用.
主要方法:
- 集成软化火花MAO (S-MAO) 采用Sr2+/Zn2+复合策略,在Ti6Al4V上创建复合涂层.
- 分析了涂层架构从双层转变为三层梯度结构的转变.
- 进行了电化学测试,以评估耐腐蚀性和阻抗响应性.
- 在涂层结构中检查了Sr和Zn的元素分布.
主要成果:
- S-MAO处理产生了三层梯度结构,显著减少了孔隙相互连接.
- 电化学分析表明,从扩散控制转向界面电荷转移,这意味着增强了涂层稳定性.
- Z1S3MAO涂层 (Sr/Zn比率为 3:1) 显示出优越的界面电荷传输电阻 (443.6 Ω cm2).
- Sr分布均,而Zn在软化火花/多孔层接口处呈现局部丰富.
- Z1S3MAO涂层显示了改善的湿透性和细胞相容性,促进了骨质生成.
结论:
- 使用Sr2+/Zn2+复合的S-MAO方法有效地增强了MAO涂层结构和Ti6Al4V上的稳定性.
- 开发的复合涂层提供了优越的耐腐蚀性和有利的生物相互作用,用于骨科应用.
- 这种方法为制造高性能生物医学植入物涂层提供了一个有希望的策略.
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