水热衰老对陶机械和微观结构性质的影响
Çağlayan Sayla Çelik1, Merve Çakırbay Tanış1
1Department of Prosthodontics, Faculty of Dentistry, Gazi University, Çankaya 06490, Ankara, Turkey.
Nanomaterials (Basel, Switzerland)
|November 12, 2025
概括
水热老化会影响单质陶,降低3Y-TZP的维克尔硬度,并导致3Y-TZP和4Y-TZP的相变. 材料配方显著影响机械和微观结构性质.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 陶工程 陶工程 陶工程
背景情况:
- 由于其机械性能,单立体陶对于牙科修复至关重要.
- 了解长期的临床性能需要评估对衰老条件的物质反应.
- 伊特里亚稳定 (3Y-TZP,4Y-TZP,5Y-TZP) 配方表现出不同的特征.
研究的目的:
- 研究热水老化对3Y-TZP,4Y-TZP和5Y-TZP陶的机械和微观结构性质的影响.
- 为了比较不同合金配方的老化和控制标本.
主要方法:
- 3Y-TZP (HT),4Y-TZP (ST) 和5Y-TZP (XT) 的样本经过水热老化 (134°C,2bar,5小时).
- 机械测试包括三点屈曲强度,维克尔硬度和表面粗度.
- 微结构分析使用X射线衍射 (XRD),原子力显微镜 (AFM) 和扫描电子显微镜与能量分散光谱 (SEM/EDS).
主要成果:
- 材料类型显著影响了屈曲强度,维克尔硬度和表面粗度.
- 水热老化降低了3Y-TZP的维克尔硬度,并诱导了3Y-TZP和4Y-TZP的单临床相变.
- 5Y-TZP表现出最高的表面粗度,并且在老化后没有单临床相变.
结论:
- 不同的单质石制剂对热水老化表现出不同的反应.
- 水热老化会影响维克尔硬度,并诱导相变,特别是在含有较低伊特里亚的中.
- 这些发现对于预测基于的牙科修复的长期临床稳定性至关重要.
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