所属单位：理学院
发表刊物：Nucl Instrum Methods Phys Res Sect B
摘要：The chemically strengthened glasses bombarded by low-energy (100 eV) argon ions at room temperature are investigated in order to understand the effect of ion-bombardment on the distribution of alkali metal ions within the glass network. The composition distribution, microstructure evolutions and physical properties of the chemically strengthened glasses before and after bombardment were analyzed by means of X-ray Photoelectron Spectroscopy, electron probe micro analysis, Raman spectroscopy and surface stress meter, respectively. Changes of atomic composition and bonding states of Na, K, Si and O were observed with increasing bombardment time. Out-diffused and migrated alkali ions in the exchanged region during bombardment, the peak of potassium ions concentration in the exchanged region decreases and moves into the interior of glasses to different degrees. And two sides of the peak value exhibit significantly different concentration distribution. Moreover, decrease of the scattering intensity of Raman spectral bands connected with silicon-oxygen tetrahedron containing non-bridging oxygens (Q2 and Q3 species) accompanies by the formation of high-coordinate Si species with increasing bombardment time. The values of compressive stress and depth of layer in the chemically strengthened glasses have a trend of decreasing markedly during bombardment. All results have shown that variation of composition distribution, Raman spectral components and surface compressive stress in the exchanged region is indicative of alterations of the silicate network induced by low-energy (100 eV) argon ion-bombardment, which provide importance data for the industrial application of the chemically strengthened glasses. © 2019 Elsevier B.V.
ISSN号：0168-583X
是否译文：否
发表时间：2019-01-01
合写作者：张文杰,Xie, Zijuan,Yi, Shiguang
通讯作者：赵志敏
发表时间：2019-01-01