Chemical strengthening of glass powder particles

IF 5.3 2区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Scripta Materialia Pub Date : 2024-09-12 DOI:10.1016/j.scriptamat.2024.116368
Malcolm Schaenen , Qi Tang , Jianxiong Li , Mostafa Hassani
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Abstract

It is well known that chemical strengthening of glass brings the benefit of increased fracture strength. Despite extensive research on processing and mechanics at the macroscale, the effectiveness of chemical strengthening on glass elements with all three dimensions in the micrometer regime remains largely unexplored. Here, we develop a novel process for chemical strengthening of micrometer-sized spherical glass powder particles and study the fracture behavior of these particles with in-situ particle compression tests inside a scanning electron microscope. Cross-sectional microscopy and energy dispersive spectroscopy measurements confirm ion exchange and show an increase in diffusion depth with an increase in processing time and temperature. We report a higher fracture strength for chemically strengthened powder particles compared with the as-received ones. We show that the increase in fracture strength is associated to the compressive residual stress resulting from ion exchange during chemical strengthening.

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玻璃粉颗粒的化学强化
众所周知,对玻璃进行化学强化可提高其断裂强度。尽管对宏观尺度的加工和力学进行了广泛研究,但化学强化对微米级三维玻璃元素的有效性在很大程度上仍未得到探索。在此,我们开发了一种用于微米级球形玻璃粉颗粒化学强化的新工艺,并在扫描电子显微镜内通过原位颗粒压缩试验研究了这些颗粒的断裂行为。横截面显微镜和能量色散光谱测量证实了离子交换,并表明随着加工时间和温度的增加,扩散深度也在增加。我们的报告显示,化学强化粉末颗粒的断裂强度比原样颗粒更高。我们发现,断裂强度的提高与化学强化过程中离子交换产生的压缩残余应力有关。
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来源期刊
Scripta Materialia
Scripta Materialia 工程技术-材料科学:综合
CiteScore
11.40
自引率
5.00%
发文量
581
审稿时长
34 days
期刊介绍: Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.
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