The Effects of Sintering Temperature Variations on Microstructure Changes of LTCC Substrate

Structural and Dielectric Properties of Glass – Ceramic Substrate with Varied Sintering Temperatures

“…The effect of sintering temperature variations on microstructure changes of the CaO-B 2 O 3 -SiO 2 glass-ceramic system has been carried out before [29]. In this chapter, an extension of some previous studies has been made to investigate the effect of sintering temperature on the structural properties and the dielectric properties in the range of 10 KHz to 10 MHz at room temperature.…”

“…The repeatability and consistency of the shrinkage percentage must be the top criteria when designing an LTCC product. This is because the shrinkage of the LTCC substrate depends on the reactivity of the co-fired material containing ceramic oxides, glass, metal, organic solvent and also the firing conditions such as temperature, time and ambient air [29]. Better reproducibility increases the uniformity of finished product characteristics and therefore increases the process yield.…”

Multilayer glass–ceramic composites for microelectronics: processing and properties

“…The shrinkage was then calculated using: [24.1] Repeatability and consistency of the shrinkage percentage must be the top criteria when designing an LTCC product. The shrinkage of the LTCC substrate depends on the reactivity of the co-fi red materials (ceramic oxides, glass, metal and organic solvent) and also on fi ring conditions such as temperature, time and the amount of oxygen in the ambient air (Alias, 2012). Good reproducibility increases the uniformity of the fi nished product and therefore increases the process yield.…”

“…During the sintering process, the glass phase may decompose into the liquid phase creating the capillary force for neighboring particles to come closer and react. If the glass phase is not uniformly distributed, grain growth is not homogeneous (Alias, 2012). Therefore achieving a good dispersion of the glass frit during the initial process is necessary for giving the LTCC a well-controlled homogeneous microstructure.…”

Influence of firing process quality on dielectric constant of microwave LTCC substrates

“…Investigation including crystal structure, shrinkage and density versus sintering temperature was carried out for Ferro A6S (Alias, 2012). Influence of firing temperature on dielectric properties in microwave range was examined only for non-standard, high or middle permittivity LTCC materials (Ko et al, 2006;Choi et al, 2004).…”