采用烧结法制备CaO-B2O3-SiO2微晶玻璃,使用差热分析（TG-DSC）、X射线衍射（XRD）、扫描电镜（SEM）和性能测试研究CaO-B2O3-SiO2微晶玻璃的烧结、晶化特性和性能。研究表明在875℃条件下烧成15min后,CBS微晶玻璃中,包含有β-CaSiO3,α-SiO2和CaB2O4晶相,且结构致密,密度为2.48g/cm3;样品在10kHz下,相对介电常数εr为5.3,介电损耗tanδ为0.003;在样品烧成过程中,CBS微晶玻璃粉末首先晶化,然后才开始致密化过程,且CBS微晶玻璃的烧结属于析晶玻璃粘滞性流动烧结。烧结过程中的析晶与致密化是两个相互竞争的过程。
Glass-ceramics were prepared by sintering method.The effect of glass composition on sintering and crystallization behavior as well as properties of the glasses were investigated by using thermo gravimetry differential scanning calorimetry（TG-DSC）,X-ray diffraction（XRD）,scanning electron microscopy（SEM） and property measurements.The results show that the optimal sintering temperature for this glass-ceramic is 875℃ for 15min,and the major phases of this material are β-CaSiO3,CaB2O4 and SiO2.The glass-ceramic possesses excellent dielectric properties： εr=5.3,tanδ=0.003 at 10kHz and density about 2.48g/cm3.The crystallization process occurred prior to densification the process,which is not favorable for densification.The CBS glass-ceramics of sintering is crystallization sintering and viscous flow sintering.Crystallization during the sintering and the densification are competing processes.
参考文献
| [1] | 周琪.低温共烧陶瓷技术发展现状及趋势[J].科技经济市场,2009(04):25-26. |
| [2] | 王悦辉,周济,崔学民,沈建红.低温共烧陶瓷（LTCC）技术在材料学上的进展[J].无机材料学报,2006(02):267-276. |
| [3] | 朱海奎,刘敏,周洪庆.LTCC介质材料的研究进展[J].材料导报,2006(z1):328-330. |
| [4] | 杨娟,堵永国,李效东,周文渊.MgO-Al2O3-SiO2微晶玻璃析晶影响因素[J].材料工程,2007(10):42-44. |
| [5] | 陈国华,唐林江,职利,成钧,刘心宇.玻璃组成对CaO-Al_2O_3-SiO_2系玻璃烧结、晶化和性能的影响[J].中南大学学报（自然科学版）,2009(05):1270-1275. |
| [6] | Chia-Ruey Chang;Jau-Ho Jean .Crystallization kinetics and mechanism of low-dielectric, low-temperature, cofirable CaO-B{sub}2O{sub}3-SiO{sub}2 glass-ceramics[J].Journal of the American Ceramic Society,1999(7):1725-1732. |
| [7] | Stefan Kemethmuller;Marcel Hagymasi;Alfons Stiegelschmitt .Viscous Flow as the Driving Force for the Densmcation of Low-Temperature Co-Fired Ceramics[J].Journal of the American Ceramic Society,2007(1):64-70. |
| [8] | 吕安国,丘泰,周洪庆,刘敏.CaO-B2O3-SiO2系低温共烧陶瓷的致密化行为及性能[J].硅酸盐学报,2008(09):1277-1281. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%