采用静滴法测量并对比典型低膨胀硼硅酸盐玻璃和普通钠钙硅玻璃的熔体密度和表面张力.结果表明,硼硅酸盐玻璃的密度要低于钠钙硅玻璃,二者均随温度升高而线性降低.硼硅酸盐玻璃的热膨胀系数要低于普通钠钙硅玻璃.在1000～1200 ℃的温度区间内,钠钙硅玻璃的表面张力低于硼硅酸盐玻璃,均随温度升高而线性增加,表面张力温度系数分别为0.11867和0.27867.
In the present research, surface tension and density of borosilicate melts were measured and compared to that of Na-Ca containing glass melt using sessile drop method. The results show that the density of borosilicate melt, always lower than that of Na-Ca containing glass melt, decreases linearly with temperature rising. The temperature dependence of density indicates a lower thermal expansion coefficient of borosilicate melt. The surface tension of both borosilicate and Na-Ca containing glass melts increases linearly with temperature within 1000 ℃～1200 ℃ and temperature coefficients are 0.27867 and 0.11867, respectively. It is reasonable to deduce that higher surface tension and temperature coefficient of borosilicate melt are attributed to the effect of boron oxide.
参考文献
| [1] | Parashar VK;Orhan JB;Sayah A;Cantoni M;Gijs MAM .Borosilicate nanoparticles prepared by exothermic phase separation[J].Nature nanotechnology,2008(10):589-594. |
| [2] | 万军鹏,程金树,汤李缨.浅谈硼硅酸盐玻璃的应用现状和发展趋势[J].玻璃,2004(05):21-25. |
| [3] | 赵彦钊.玻璃工艺学[M].北京:化学工业出版社,2006 |
| [4] | 万军鹏,程金树,陆平.硼硅酸盐玻璃与钠钙硅玻璃浮法成型的对比研究[J].硅酸盐通报,2007(06):1197-1201. |
| [5] | Clare A G et al.[J].Glass Technology,2003,44(02):59. |
| [6] | DOU Lei,YUAN ZhangFu,LI JianQiang,LI Jing,WANG XiaoQiang.Surface tension of molten Al-Si alloy at temperatures ranging from 92.3 to 112.3 K[J].科学通报（英文版）,2008(17):2593-2598. |
| [7] | Tanaka T et al.[J].Zeitschrift fur Metallkunde,2004,95(09):818. |
| [8] | Kawai Y.Handbook of Physico-chemical Properties at High Temperatures[M].Tokyo:The Iron and Steel Institute of Japan,1988:158. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%