%0 Journal Article
%T Composition Change During Melting of PbO-PbBr2-PbF2-P2O5 System Glass<br>熔化过程中PbO-PbBr2-PbF2-P2O5系统玻璃成分的变化
%A ZHAO Hong-Sheng
%A ZHOU Wan-Cheng
%A ZHU Dong-Mei
%A <br>赵宏生
%A 周万城
%A 朱冬梅
%J 无机材料学报
%D 2000
%I Science Press
%X To study the composition change during melting of PbO-PbBr2-PbF2-P2O5 system glass, the quantitative chemical analysis was complied to measure the composition of the glass after melting. The results show that the loss of lead during melting is mainly ascribed to the volatilization of PbBr2. When a sample contains a high content of phosphorus and a low content of fluorine, the loss of bromine and phosphorus is remarkable, mainly in the form of PBr3. On the other hand, if a sample contains a high content of fluorine and a low content of bromine or a low content of phosphorus, bromine will not lose much while a large amount of phosphorus and fluorine are lost during melting, mainly in the form of PF5. The reaction between phosphorus and fluorine is much easier than that between phosphorus and bromine. The results of thermodynamic calculation are consistent with the above results and discussions. The content of oxygen is influenced by two factors. Volatilization of P2O5 decreases the content of oxygen, while the reaction between oxygen or water in air and halides in melts increases the content of oxygen.
%K glass
%K chemical analysis
%K volatilization form
%K chemical thermodynamic calculation<br>玻璃
%K 化学分析
%K 化学热力学计算
%K 熔化
%K 熔制
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=4A4C91954CEE6C0F046A264B1DC48A8C&yid=9806D0D4EAA9BED3&vid=23CCDDCD68FFCC2F&iid=0B39A22176CE99FB&sid=FE4C96E058BB2280&eid=0C191C6ECF79047F&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=0&reference_num=8