The structural groups of alkali silicate glasses determined from 29Si MAS-NMR
作者： Hideki Maekawa , Takashi Maekawa , Katsuyuki Kawamura , Toshio Yokokawa
DOI: 10.1016/0022-3093(91)90400-Z
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摘要: … [16] that free Na20 ions do not exist in the sodium silicate glasses of the composition range studied in this work. However, in Li20-SiO 2 glasses, the experimental [NBO]/[Si] value is …
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