在Ba/Sr-Ca-Mg-Zn-Si-Al-O玻璃中的结构-属性相关性:通过实验和分子动力学模拟研究的阐明
Sushanta Kumar Mohapatra1,2, Indrajit Tah1,2, Margit Fabian3
1Specialty Glass Division, CSIR-Central Glass and Ceramic Research Institute, 196 Raja S.C. Mullick Road, Kolkata, West Bengal 700032, India.
The journal of physical chemistry. B
|November 28, 2024
概括
将氧化 (SrO) 添加到,,,,,-酸 (CMZSA) 玻璃中,可以增强其光学,热和机械性能. 这种混合性土的替代改善了高级光学和激光应用的网络稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 玻璃科学 玻璃科学
- 光电学是指光电子产品.
背景情况:
- 光学和激光技术的宽带传输玻璃需要光学传输 (可见到中红外),机械强度,化学耐用性,玻璃成形能力和热稳定性的平衡.
- 低声波能量的眼镜提供了扩展的中红外传输,但往往难以保留其他必要的特性.
- ,,,二氧化和酸 (CMZSA) 玻璃是一种候选材料,但优化其性能仍然是一个挑战.
研究的目的:
- 研究CMZSA玻璃中混合土替代物 (BaO/SrO) 的潜力,以提高整体性能,同时保持低声子能量.
- 用计算和实验方法分析结构-属性关系.
- 为在光学和激光应用中提高玻璃性能确定最佳组合.
主要方法:
- 在CMZSA玻璃配方中,部分用BaO和SrO替代CaO.
- 分子动力学 (MD) 模拟用于定量结构分析.
- 评估玻璃性能 (光学,热学,机械) 的实验技术.
主要成果:
- 混合土替代物,特别是SrO,在不损害低声子能量的情况下改善玻璃性能.
- 结构分析揭示了Al,Si,Zn和Mg的特定协调状态,以及Ba2+和Sr2+离子作为电荷补偿器和网络修饰者的作用.
- 添加SrO的玻璃表现出桥梁氧的最高度,与优越的光学,热和机械特性以及更稳定的网络相关.
结论:
- 在CMZSA玻璃中用SrO部分替代CaO是一种有效的策略,可以提高网络稳定性和整体玻璃性能.
- 改进的性能,包括光学,热学和机械性能,使SRO修饰的CMZSA眼镜非常适合光学和激光技术.
- 这项研究为设计先进的玻璃材料提供了一条途径,这些材料具有针对苛刻应用的量身定制性能.
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