%0 Journal Article
%T Process of Phase Separation in Sodium Borosilicate Glass as Studied by NMR<br>钠硼硅酸盐玻璃分相过程的NMR研究
%A REN Hai-Lan
%A YUE Yong
%A YE Chao-Hui
%A YANG Qi-Hua
%A <br>任海兰
%A 岳勇
%A 叶朝辉
%A 袁启华
%J 无机材料学报
%D 1998
%I Science Press
%X 29Si, 11 B, 23Na MAS NMR were employed to study the structure change of the Na2O-B2O3SiO2 glass in the process of thermal treatment of phase separation. The results show that oxygenatoms are deleted among the SiO4] structure units and the aggregation degree of Si increases inthe process of phase separation. In the meantime, the structure of boron atoms in silicon-richphase is transformed gradually from BO3] to BO4] and BO4] units enter into sodium-boronrich phase. The difference between the Compositions of the two phases gradually increases. Thephase separation is the result of diffusion and mass transfer. Moreover, the glass has a morerapid structure adjustment rate at a higher temperature of thermal treatment, thus can get to theequilibrium state faster.
%K sodium borosilicate
%K phase separation
%K NMR<br>钠硼硅酸盐
%K 分相
%K NMR
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=EB290F7852E805ED04C0D04DC6F20081&yid=8CAA3A429E3EA654&vid=FC0714F8D2EB605D&iid=38B194292C032A66&sid=A4E67967A1AB25F0&eid=B941678158018439&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=2&reference_num=5