以CaO-B2O3-SiO2 (CBS)玻璃粉体和Al2O3陶瓷粉体为原料,通过在CBS与Al2O3的质量比固定为50∶50的玻璃-陶瓷复合材料中添加适量的Bi2O3作为烧结助熔剂,探讨了Bi2O3助熔剂对CBS/Al2O3复合材料的烧结性能、介电性能、抗弯强度和热膨胀系数的影响规律.研究表明:Bi2O3助熔剂能通过降低CBS玻璃的转变温度和黏度促进CBS/Al2O3复合材料的致密化进程,于880℃下烧结即能获得结构较致密、气孔较少的CBS/Al2O3复合材料.然而,过量添加Bi2O3将使玻璃的黏度过低,从而恶化CBS/Al2O3复合材料的烧结性能、介电性能及抗弯强度.当Bi2O3的添加量为CBS/Al2O3复合材料的1.5wt％时,于880℃下烧结即能获得最为致密的CBS/Al2O3复合材料,密度为2.82 g· cm-3,这一材料具有良好的介电性能(介电常数为7.21,介电损耗为1.06×10-3),抗弯强度为190.34 MPa,0～300℃的热膨胀系数为3.52×10-6K-1.
参考文献
| [1] | 张普雷;史永胜;史耀华.大功率背光源用LED驱动电路的研究现状与进展[J].液晶与显示,201025(01):68-73. |
| [2] | 钟玉华;孙国辉.大功率LED灯强化冷却散热器的创新设计[J].科学技术与工程,201313(23):6887-6892. |
| [3] | 林锦;张海燕;洪浩群.碳包铝纳米粒子填充硅橡胶制备散热复合材料[J].复合材料学报,201128(04):46-51. |
| [4] | Wang S;Wang Y;Hsu Y.Densification and microwave dielectric behaviors of CaO-B2O3-SiO2 glass-ceramics prepared from a binary glass composite[J].Journal of Alloys and Compounds,2010499(02):211-216. |
| [5] | 聂海;张怀武;李元勋.助熔剂BBSZ对M型钡铁氧体的低温共烧改性研究[J].材料研究学报,201024(03):294-300. |
| [6] | Ding Y Y;Liu S X;Li X Y.Luminescent low temperature co-fired ceramics for high power LED package[J].Journal of Alloys and Compounds,2012521(25):35-38. |
| [7] | Kim Y;Kang S.The thermal properties of cordierite/diopside composites fabricated by glass-ceramics process for LED packages for LED packages[J].Ceramics International,201339(Suppl.1):S619-S622. |
| [8] | 张海军;贾晓林;王桂红.BaFe12O19/SiO2-B2O3-K2O微晶玻璃陶瓷的低温合成及其微波性能[J].复合材料学报,200424(01):1-6. |
| [9] | 史可顺.电子陶瓷和器件的低温共烧技术[J].硅酸盐学报,200735(增刊1):108-110. |
| [10] | Chen X Y;Zhang W J;Bai S X.Densification and characterization of SiO2-B2O3-CaO-MgO glass/Al2O3 composites for LTCC application[J].Ceramics International,201339(06):6355-6361. |
| [11] | 徐洋;钟朝位;周晓华.低温共烧氧化铝/玻璃复合基板材料的研究[J].材料开发与应用,200722(06):20-23. |
| [12] | Lima M M R A;Monteiro R C C;Graca M P F.Structural,electrical and thermal properties of borosilicate glassalumina[J].Journal of Alloys and Compounds,2012538:66-72. |
| [13] | 唐利锋;梁 辉;李晓雷.Li2O掺杂对CBS/Al2O3玻璃陶瓷性能的影响[J].压电与声光,200931(05):699-702. |
| [14] | 张文涛;何峰;刘次启.Bi2O3对钠钙硅玻璃熔体性质的影响研究[J].陶瓷学报,201233(02):167-171. |
| [15] | 陈国华;刘心宇.氧化铋对微晶玻璃的相转变和性能的影响[J].材料科学与工艺,200412(05):501-505. |
| [16] | Kong L B;Li Z W;Lin G Q.Electrical and magnetic properties of magnesium ferrite ceramics doped with Bi2O3[J].Acta Materialia,200755(19):6561-6572. |
| [17] | ChenG H;Tang L J;ChenJ.Synthesis and characte rization of CBS glass/ceramic composites for LTCC application[J].Journal of Alloys and Compounds,2009478(1-2):858-862. |
| [18] | Li C Y;Su Q.A new blue phosphorescent-ceramic:rareearth-doped calcium aluminoborate[J].Journal of Alloys and Compounds,2006408-412:875-878. |
| [19] | Wang H P;Xu S Q;Lu S Q.Dielectric properties and microstructures of CaSiO3 ceramics with B2O3 addition[J].Ceramics International,200935(07):2715-2718. |
| [20] | Molla A R;Kesavulu C R;Chakradhar R P S.Microstructure,mechanical,thermal,EPR,and optical properties of MgAl2O4:Cr3+ spinel glass-ceramic nanocomposites[J].Journal of Alloys and Compounds,2014583:498-509. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%