Glass leached, compositional profile

Figure 13. Compositional profiles for a soda-silica glass leached in water for 15 min at-25°C in deionized water, SA/V — 10 m 1. Obtained with ESCA. (Reproduced, with permission, from Ref. 20. Copyright 1980, PNL Report 3465.)...

Figure 19. Compositional profile of the leached layers for the two different glasses. The curves flatten and become contrast at a depth corresponding to the thickness of the leached layer. Key glass 3, 28 d, 90°C, SA/V = 0.1 ...

In Figure 2 the positive ion intensities are plotted as a function of time for several major elements in the glass. These depth-composition profiles are compared for unleached and 30 minute aqueous leaching conditions. For each case, the results of profiles on two separate samples have been shown (solid and dashed lines), so that the reproducibility of the method can be judged. 

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