期刊
JOURNAL OF NON-CRYSTALLINE SOLIDS
卷 600, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jnoncrysol.2022.121994
关键词
Chemical strengthening; Field-assisted ion exchange; Soda magnesia silicate float glass; Residual stress
This study conducted an electric field-assisted ion exchange process on an innovative glass and measured various parameters to analyze their correlation with processing conditions. The results showed that the glass had a high propensity for chemical strengthening, and the application of an electric field had a beneficial effect on the penetration of potassium ions.
Electric field-assisted ion exchange process was carried out on an innovative soda magnesia silicate float glass by using a specifically realized equipment which allows to change the applied voltage and the polarity and to measure the flowing current.Parameters such as surface K/Na exchange rate, potassium penetration, inter-diffusion coefficient, residual stress and case depth were measured and correlated with the processing conditions. The results revealed a high propensity of the considered glass to be chemically strengthened and a beneficial effect of the applied electric field in terms of time and temperature. For treatment carried out at 410 degrees C potassium penetration depth in excess to 10 mu m can be achieved in less than 5 min. By alternating the polarity, both sides can be homogeneously reinforced. When the duration of each single cycle at a certain polarity is increased, the potassium penetration depth increases although cycles longer than 10 min can be detrimental.
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