Microstructure characteristics for anorthite composite glass with nucleating agents of TiO2 under non-isothermal crystallization

The effect of TiO2 and P2O5 on densification behavior and properties of Anortite-Diopside glass-ceramic substrates

“…Sintering and crystallization parameters of anorthite-based GCs strongly depend on the composition of parent glass and added nucleating agents [8,9]. Furthermore the resultant porosity due to insufficient densification can degrade the mechanical properties and increase the dielectric loss [9].…”

Low Temperature Cofired Ceramics

“…The CTE increased with increasing rutile content since rutile has a higher CTE than anatase [119]. The anorthite (CaO-Al 2 O 3 -2SiO 2 : CaAl 2 Si 2 O 8 ) predominant glass ceramic system has been extensively investigated and regarded as a potential material for LTCC applications [95,[121][122][123][124][125][126]. Anorthite is an important material for LTCC substrates due to its lower coefficient of thermal expansion and lower relative permittivity than alumina [122].…”

“…It was reported [125,126] that the sintering temperature can be lowered below 900°C in anorthite glass-ceramic by reducing the particle size of glass powders to the submicrometer scale. Lo et al [124] reported that anorthite crystals show preferential nucleation at specific sites with rutile crystals precipitated from the glassy matrix. Rutile plays the role of nucleating agent to reduce the crystallization temperature lower than 900°C for anorthite-based glass-ceramics.…”

Novel Double-Layer Structure LTCC Substrate with Enhanced Flexural and Adhesions Strengths

“…Several types of LTCC materials, with different dielectric constants and dielectric loss, have been developed and modified according to the needs of the specific applications. In such systems, some mixtures of silica‐based glass and crystalline Al 2 O 3 have been studied as a substrate material for LTCC module because of their high flexural strength and superior chemical durability 1–3 …”

“…In such systems, some mixtures of silica-based glass and crystalline Al 2 O 3 have been studied as a substrate material for LTCC module because of their high flexural strength and superior chemical durability. [1][2][3] In the mixture of silica-based glass and Al 2 O 3 , feldspar (MAl 2 Si 2 O 8 ), is precipitated by the reaction, resulting in three phases, Al 2 O 3 , feldspar, and glass. 1,4,5 The amount of glass and Al 2 O 3 phases is reduced and the amount of feldspar phase is increased during sintering process.…”