双相环氧化生物陶的组成,加工和特性:与竞争强度和光学特性之间的关系
Chek Hai Lim1, Sonaj Vardhaman1, Niyati Reddy1
1Department of Preventive and Restorative Sciences, School of Dental Medicine, University of Pennsylvania, PA 19104, USA.
Ceramics international
|September 13, 2023
概括
用于牙科修复的伊特里亚稳定 (YSZ) 生物陶显示出强度和半透明度的权衡. 优化处理可能会同时增强两个属性,挑战当前的理解.
科学领域:
- 生物材料科学 生物材料科学
- 材料科学 材料科学 材料科学
- 陶工程 陶工程
背景情况:
- 双相陶生物陶,特别是伊特里亚稳定陶 (YSZ),对于现代牙科修复至关重要.
- 了解组成,处理,结构和属性之间的相互作用是优化YSZ性能的关键.
研究的目的:
- 研究3-5mol%YSZ生物陶的组成,加工,结构和特性之间的关系.
- 分析烧结条件,立方和四角含量以及颗粒大小如何影响YSZ强度和半透明度.
- 探索优化YSZ临床材料属性的潜在加工路径.
主要方法:
- 3YSZ,4YSZ和5YSZ的结晶形状,密度和微观结构的表征.
- 通过严格的测试来评估强度和光学性能.
- 对烧结温度,立方相含量和粒度大小的依赖性的分析.
主要成果:
- YSZ强度与具有显著格子扭曲的四角 (t-ZrO2) 的数量相关.
- 透光性与立方 (c-ZrO2) 和较少扭曲的四角有关.
- 虽然强度通常为3YSZ>4YSZ>5YSZ,半透明度则相反,但强度可以随着半透明度的增加而增加,在最佳的烧结3YSZ和4YSZ中.
结论:
- 该研究揭示了YSZ组成,加工和特性之间的细微关系,特别是关于强度和半透明度.
- 观察到的趋势表明,优化烧结可以提高强度和半透明度,这与一些普遍的假设相反.
- 这些发现为开发用于牙科应用的先进土生物陶提供了新的加工策略.
相关概念视频
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