Effects of water immersion and humid weathering on the near-surface mechanical properties of phosphate laser glass
Effects of water immersion and humid weathering on the near-surface mechanical properties of phosphate laser glass
复制标题
水浸和潮湿风化对磷酸盐激光玻璃近表面力学性能的影响
DOI：
10.1111/jace.16083
复制
发表时间：
2018-10
影响因子：
3.9
通讯作者：
Jiaxin Yu
中科院分区：
文献类型：
--
作者：
Bo Jiang;Hongtu He;Yafeng Zhang;Jiaxin Yu
本文采用纳米压痕法研究了水浸和潮湿风化对磷酸盐激光（PL）玻璃近表面力学性能的影响。结果表明，在水浸条件下，PL玻璃的折合模量和纳米硬度随浸泡时间的增加先减小后增大，最后保持不变;而在潮湿风化条件下，它们均单调减小。水分子与玻璃网络之间发生的反应机制，特别是在反应过程的后期阶段，决定了近表面机械性能及其在暴露于水和/或潮湿空气时的差异。本文中的结果为玻璃表面的纳米力学提供了额外的见解，这也有助于了解磷酸盐激光玻璃在潮湿环境中加工、储存和使用过程中的表面变化过程。
In this paper, the effect of water immersion and humid weathering on the near‐surface mechanical properties of phosphate laser (PL) glass was investigated using nanoindentation. The results indicate that, in the water immersion condition, the reduced modulus and nano‐hardness of PL glass decrease first, then increase and finally keeps unchanged with the increase in immersion duration; however, in the humid weathering condition, they decrease monotonously. The reaction mechanism occurring between water molecules and the glass network, especially during the later stage of the reaction process, determines the near‐surface mechanical properties and their differences when exposed to water and/or humid air. The results in this paper provide additional insight into the nano‐mechanics of glass surfaces, which also help understand the surface alteration process of phosphate laser glass during machining, storage, and serving in wet environments.
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