玻璃纳米相分离的压痕开裂行为和结构

Shangcong Cheng, C. Song, P. Ercius, Cristian Cionea, P. Hosemann
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引用次数: 9

摘要

作者:Cheng, s;歌,C;Ercius P;Cionea C;摘要:采用相关显微技术,采用维氏压痕裂纹分析和透射电子显微镜(TEM)菲涅耳对比法,比较了钠石灰硅、熔融硅和硼硅酸盐玻璃的性能和纳米相结构。研究发现,所观察到的压痕开裂行为与这些玻璃的纳米相分离结构有关。钠-石灰-硅玻璃的“正常”开裂行为受其纳米相分离的影响;而熔融石英的“异常”开裂行为是由于均匀的单相结构。硼硅玻璃具有微滴纳米相分离,并表现出“中间”开裂行为。这些结果表明,为了生产低脆性玻璃,控制玻璃的纳米相分离结构是非常重要的。
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Indentation cracking behaviour and structures of nanophase separation of glasses
Author(s): Cheng, S; Song, C; Ercius, P; Cionea, C; Hosemann, P | Abstract: Correlative microscopy is used to compare the performance and nanophase structures of soda-lime-silica, fused silica and borosilicate glasses using Vickers indentation crack analysis and the transmission electron microscopy (TEM) Fresnel contrast method. It is found that the observed indentation cracking behaviour is correlated to the nanophase separation structure of these glasses. The so-called "normal" cracking behaviour of soda-lime-silica glass is influenced by its spinodal nanophase separation; while the "anomalous" cracking behaviour of fused silica is due to the uniform single phase structure. Borosilicate glass has a droplet nanophase separation and shows "intermediate" cracking behaviour. These results indicate that in order to produce low britleness glasses it is important to control nanophase separation structure of a glass.
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来源期刊
CiteScore
0.70
自引率
33.30%
发文量
0
审稿时长
1 months
期刊介绍: Physics and Chemistry of Glasses accepts papers of a more purely scientific interest concerned with glasses and their structure or properties. Thus the subject of a paper will normally determine the journal in which it will be published.
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