Densification and characterization of SiO2-B2O3-CaO-MgO glass/Al2O3 composites for LTCC application

作者：Chen, Xingyu^*; Zhang, Weijun; Bai, Shuxin; Du, Yongguo

来源：Ceramics International, 2013, 39(6): 6355-6361.

DOI：10.1016/j.ceramint.2013.01.061

• Sintering
• Dielectric properties
• Densification
• LTCC

A glass/ceramic composite using lead-free low melting glass (SiO2-B2O3-CaO-MgO glass) with Al2O3 fillers was investigated. X-ray diffraction analysis revealed that the anorthite and cordierite phase appeared in the sintered composites. The dilatometric analysis showed that the onset of shrinkage took place at similar to 624 degrees C for all the samples and the onset temperature was independent on the content of glass. The low melting glass significantly promoted densification of the composites and lowered the sintering temperature to similar to 875 degrees C. The addition of 50 wt% glass sintered at 875 degrees C showed epsilon(r) of 7.3, tan delta of 1.15 x 10(-3), TEC of 5.41 ppm/degrees C, thermal conductivity of 3.56 W/m degrees C, and flexural strength of 184 MPa. The results showed that the SiO2-B2O3-CaO-MgO glass/Al2O3 composites were strong potential candidates for low temperature cofired ceramic substrate applications.

• 出版日期2013-8
• 单位中国人民解放军国防科学技术大学