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According to recent domestic and international low-temperature co-fired ceramic material (LTCC) research progress and Electronic Packaging Technology for LTCC materials, X-ray diffraction (XRD), scanning electron microscopy (SEM), differential thermal analyzer (DTA) impedance analyzer, thermal expansion coefficient other analytical instruments, System CaO-B 2 O 3 -SiO 2 (CBS) glass / ceramic composites and CaO-Al 2 O 3 -SiO 2 -B 2 O 3 (CASB), the composition and the sintering characteristics of the glass-ceramic, crystal, micro-structure, dielectric properties, thermal expansion characteristics, microhardness, etc. intrinsic relationship; slurry and process for the CASB glass tape-casting discussed. The results are as follows: the composition of the composite of the CBS glass / cordierite (or wollastonite) impact on performance. CBS glass / cordierite composite material dielectric constant and the thermal expansion coefficient decreases with the increase in the content of cordierite, the micro-hardness increases with the increase of the content of the cordierite ceramic. The cordierite Add inhibit the precipitated CBS quartz glass. The anorthite quantity is increased with the the cordierite content and the increase in sintering temperature and does not deteriorate the physical properties of the material. The permittivity of the composite material of the the CBS glass / wollastonite and decreases slightly with the increase of the content of wollastonite, the micro-hardness increases with the increase of the content of wollastonite. Of wollastonite change the composition of the CBS glass, inhibition of cristobalite and the precipitation of calcium boracite benefit to the formation of wollastonite phase. Low-temperature sintering (≤ 1000 ° C) were successfully prepared the CBS glass / cordierite (wollastonite) ceramic composites. Its relative density, dielectric constant, dielectric loss and a coefficient of thermal expansion 96% ,5-6, 0.15% -0.4% and 4.21-7.25 × 10 -6 / ° C, respectively. The systematic study of the glass composition of the the CASB glass crystallization property, the introduction of k (T) criterion to determine the impact of the oxide glass crystallization characteristics: With the CaO / Al 2 O 3 ratio increases, CASB glass transition temperature and crystallization exothermic peak temperature decreased and the crystallization exothermic peak sharpened; reduces the glass crystallization activation energy, increasing the crystallization rate constant k (T), is conducive to the crystallization of the glass, and to promote the precipitation of calcium silicate. CaO / Al 2 O 3 based on the same, with SiO 2 the amount of the increase, CASB glass transition temperature and crystallization exothermic peak temperature moves to the high temperature, so that the devitrification of the glass difficult, but reduces the thermal expansion coefficient and dielectric constant. With the SiO 2 / CaO ratio increases, the crystallization peak flattens the crystallization exothermic peak temperature gradually increased, increasing the crystallization activation energy of the glass, reducing the crystallization rate constant k (t). SiO 2 / based on CaO unchanged, with Al 2 the O 3 the amount of the increase, the sintering temperature is reduced, promote mullite precipitation. Studied mainly composed of calcium feldspar CASB glass-ceramic has a low-grade fever temperature (900-1000 ° C), moderate dielectric constant (6.9-7.5), low dielectric loss (≤ 0.1%), small referral electric constant temperature stability (66-113 × 10 -6 / ℃) and low coefficient of thermal expansion (3.8-4.5 × 10 -6 / ℃), is expected to be used the field of electronic packaging. Study of the various organic additives (such as a solvent, a dispersing agent, a binder and a plasticizer) in the cast slurry, the mechanism and principle of selection. Selected reasonable solvent is methyl ethyl ketone / ethanol azeotropic solvents, dispersants cool tributyl phosphate, the binder is a polyvinyl butyral (PVB), the plasticizer is dibutyl phthalate Grease (DBP). Studied the influence the plasticizer / convection the ratio (R) of the adhesive performance of the casting slurry. The optimum ratio of the cast slurry: glass powder 100g (the glass powders particle diameter D 50 for approximately 2 uM), R is 0.6, a dispersing agent for the 3g, a binder for the 18 g plasticizer is 10.8g, the solvent content of 140-180g.
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