通过对晶体化加硬氧化玻璃通过对晶体化
Hu Tang1,2,3, Yong Cheng4, Xiaohong Yuan5
1Bayerisches Geoinstitut, University of Bayreuth, Bayreuth, Germany. hutang@jlu.edu.cn.
Nature materials
|August 7, 2023
概括
研究人员通过诱导准晶体化,在氧化玻璃中实现了异常硬化. 这种新的方法产生了类似晶体的集群,显著提高了玻璃的性,并使材料能够耐损坏.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 玻璃科学 玻璃科学
背景情况:
- 玻璃缺乏晶体材料中发现的微观结构硬化机制,限制了它们的应用.
- 在不牺牲其他属性的情况下开发固玻璃的方法仍然是一个重大挑战.
研究的目的:
- 为了研究结晶化作为一种固氧化玻璃的策略.
- 了解对晶体玻璃增强性的结构起源.
主要方法:
- 酸玻璃的高压和高温处理.
- 玻璃结构和机械性能的实验性表征.
- 计算建模以阐明变形机制.
主要成果:
- 通过准晶体化实现了类似晶体的中距离顺序集群的均形成.
- 在甲晶氧化物玻璃 (1.99 ± 0.06 MPa·m1/2) 中表现出优越的性.
- 观察到的塑性变形特征归因于应力诱导的反转变和剪切带激发.
结论:
- 准晶体化为设计高耐损氧化玻璃材料提供了一种强有力的策略.
- 原子层面的结构变化,比如准晶体化,对玻璃的性能有着深刻的影响.
- 这种方法克服了眼镜内在的脆性限制.
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