研究了组成调整对高硼硅玻璃粘度和膨胀系数的影响。结果表明，随着竹（B2O3）／n（SiO2）比增大，玻璃粘度减小，而膨胀系数增大。增加Al2O3含量，玻璃粘度增大，但膨胀系数基本没有变化。Li2O具有助熔作用，可显著降低玻璃粘度，而增大膨胀系数。ZnO也表现出助熔效果，但比Li2O作用弱。CaO取代Na2O时，玻璃高温粘度变化较小，而低温粘度明显增大。加入ZnO和CaO，玻璃膨胀系数降低。外加少量的TiO2、ZrO2和La2O3可降低玻璃粘度，膨胀系数稍有增大。E玻璃与Kovar合金的膨胀系数具有优异匹配性，可满足Kovar合金封装要求，表现出良好的应用前景。
The effect of components on viscosities and coefficients of thermal expansion of borosilicate glasses were studied. With the increasing of n(B2O3)/n (SiO2) ratio, the viscosities of borosilicate glasses decrease, and their coefficients of thermal expansion increase. When Ale O3 replaces SiO2, the viscosities of borosilicate glasses enhance, but their coefficients of thermal expansion have little change. The viscosities rapidly decrease and coefficients of thermal expansion increase if Li2 O was adopted. ZnO carl also improve the melting of borosil- ieate glasses, hut its influence is less than Li2O's. When CaO replaces Na2O, the viscosity change of high ten〉 perature is little, but that of low temperature is much. The coefficients of thermal expansion decrease when ZnO and CaO were adopted. If a few TiO2, ZrO2 and La2O3 were introduced, the viscosities of borosilicate glasses decrease and their coefficients of thermal expansion have little increase. The coefficient of thermal expansion of E glass was matched excellently with that of Kovar alloy, indicating that E glass has a great potential application.
参考文献
| [1] | Limm M M;Monteiro R .Characterisation and thermal behaviour of a borosilieate glass[J].Thermoehimiea Ae- ta,2001,373(01):69-74. |
| [2] | Eldin FME.;El Alaily NA. .Electrical conductivity of some alkali silicate glasses[J].Materials Chemistry and Physics,1998(2):175-179. |
| [3] | 田英良;孙诗兵.新编玻璃工艺学[M].北京:中国轻工业出版社,2009:113-116. |
| [4] | 李秀明,赵高凌,刘史敏,应浩,刘军波,汪建勋,韩高荣.低铝高硼硅玻璃基本形成过程及性能研究[J].功能材料,2010(05):855-857. |
| [5] | 钱达兴,周萘,孙道兵.玻璃熔制时影响氧化硼挥发的若干工艺因素[J].建筑材料学报,1998(02):197. |
| [6] | Jeetendra Sehgal;Setsuro Ito .Brittleness of glass[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,1999(0):126-132. |
| [7] | 肖卓蒙;卢安贤 .RzO-MO-AlzO2-SiO2玻璃的组成与其热膨胀系数的关系[J].中南大学学报,2005,36(04):566-570. |
| [8] | Gavriliu G .Thermal expansion and characteristic points of Na20 SiO2 glass with added oxides[J].Journal o{ the European Ceramic Society,2002,22(08):1375-1379. |
| [9] | Philipp Maass .Towards a theory for the mixed alkali effect in glasses[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,1999(1):35-46. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%