...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Laser-assisted surface patterning of magnesium with silver nanoparticles: Synthesis, characterization and modelling
【24h】

Laser-assisted surface patterning of magnesium with silver nanoparticles: Synthesis, characterization and modelling

机译：银纳米粒子对镁的激光辅助表面图案化：合成，表征和建模

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Surface patterning of biocompatible materials may improve cell adhesion, infiltration and proliferation. Magnesium is a biocompatible metal which has bioresorption capability, as well as a low elastic modulus. This unique combination of properties has attracted researchers to develop biodegradable magnesium devices. In this work, the patterning of magnesium with silver nanoparticles printed by the laser-assisted maskless microdeposition (LAMM) process was studied. The geometry and microstructure of the printed silver patterns and the diffusion zone at the Mg/Ag interface were studied using profilometry, scanning electron microscopy (SEM), energy dispersive x-ray spectroscopy (EDS) and transmission electron microscopy (TEM). The TEM analysis suggested that some intermetallic particles may form at the interface during laser sintering. The penetration curve of the AgMg diffusion couple was obtained using EDS analysis. A finite element model is developed to simulate the LAMM process of silver nanoparticles on magnesium substrates. The model included a thermal analysis for determining the temperature history throughout the process, coupled with a diffusion model for evaluating compositional profiles across the interface. A comparison of the predicted profiles with the EDS results showed that the modelling and the experimental results qualitatively match. The analysis of SEM micrographs of the sintered nanoparticles, in light of the thermal modelling results, suggested that a minimum laser heat input was required for effective sintering of the nanoparticles.
机译：生物相容性材料的表面图案可以改善细胞粘附，渗透和增殖。镁是具有生物吸收能力以及低弹性模量的生物相容性金属。这种独特的性能组合吸引了研究人员开发可生物降解的镁装置。在这项工作中，研究了通过激光辅助无掩模微沉积（LAMM）工艺印刷的银纳米颗粒对镁的构图。使用轮廓仪，扫描电子显微镜（SEM），能量色散X射线光谱（EDS）和透射电子显微镜（TEM）研究了印刷的银图案的几何结构和微观结构以及Mg / Ag界面的扩散区。 TEM分析表明，激光烧结过程中可能在界面处形成一些金属间颗粒。使用EDS分析获得AgMg扩散偶的渗透曲线。建立了有限元模型来模拟银纳米颗粒在镁基底上的LAMM过程。该模型包括用于确定整个过程中温度历史的热分析，以及用于评估整个界面上的成分分布的扩散模型。将预测轮廓与EDS结果进行比较表明，建模和实验结果在质量上是匹配的。根据热模拟结果对烧结纳米颗粒的SEM显微照片的分析表明，有效烧结纳米颗粒需要最少的激光热输入。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号