摘要
应用ＸＲＤ、ＴＥＭ、ＳＡＤ及ＥＤＳ等测试技术，系统地研究了ＴｉＯ２及烧成温度对Ｋ２Ｏ－Ｎａ２Ｏ－ＣａＯ－ＭｇＯ－ＺｎＯ－Ａｌ２Ｏ３－ＳｉＯ２系瓷釉显微结构的作用。结果表明，在１１４０～１２２０℃烧成时，瓷釉中都存在分相与析晶现象，液滴相富含Ｔｉ４＋、Ｃａ２＋、Ｚｎ２＋，而基体玻璃相富含Ｓｉ４＋，析出的晶体主要为钛榍石。随烧成温度的提高，析出晶体的数量不断减少。另外，当ＴｉＯ２加入量增加时瓷釉的分相程度、液滴数量及尺寸将随之而增大。
By means of XRD,TEM,SAD and EDS technique,the effect of TiO 2 and the firing temperature on the micro-structure of glazes in the system of K 2O-Na 2O-CaO-MgO-ZnO-Al 2O 3-SiO 2 is investigated systematically The results show that the opacity of the glazes is produced by the liquid-liquid separation and recrystalization at the firing temperature of 1140-1220℃.The droplet phase is rich in Ti 4+ ,Ca 2+ and Zn 2+ and the matrix phase is rich in Si 4+ .The main recrystal phase is sphene.The amount of the recrystals is decreased when the firing temperature is higher.In addition,the extent of the liquid-liquid separation,the amount of droplets and their size are increased when the amount of TiO 2 is increased.
出处
《硅酸盐通报》
CAS
CSCD
1997年第4期10-13,56,共5页
Bulletin of the Chinese Ceramic Society
关键词
钛釉
分相
析晶
陶瓷
瓷釉
显微结构
Ti-opaque glaze,liquid-liquid separation,recrystalization
