Open AccessCrystallisation Kinetics of aβ
Author(s) -
Oscar Rubem Klegues Montedo,
Dachamir Hotza,
Antônio Pedro Novaes de Oliveira,
Róbert Mészáros,
Nahum Travitzky,
Peter Greil
Publication year - 2012
Publication title -
advances in materials science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 42
eISSN - 1687-8442
pISSN - 1687-8434
DOI - 10.1155/2012/525428
Subject(s) - materials science , ceramic , crystallization , kinetics , sintering , activation energy , glass ceramic , differential scanning calorimetry , mineralogy , composite material , analytical chemistry (journal) , thermodynamics , chemistry , physics , organic chemistry , quantum mechanics
LZSA (Li2O-ZrO2-SiO2-Al2O3) glass ceramic system has shown high potential to obtain LTCC laminate tapes at low sintering temperature (<1000°C) for several applications, such as screen-printed electronic components. Furthermore, LZSA glass ceramics offer interesting mechanical, chemical, and thermal properties, which make LZSA also a potential candidate for fabricating multilayered structures processed by Laminated Objects Manufacturing (LOM) technology. The crystallization kinetics of an LZSA glass ceramic with a composition of 16.9Li2O⋅5.0ZrO2⋅65.1SiO2⋅8.6Al2O3 was investigated using nonisothermal methods by differential thermal analysis and scanning electronic microscopy. Apparent activation energy for crystallization was found to be in the 274–292 kJ⋅mol−1 range, and an Avrami parameter n of 1 was obtained that is compared very favorably with SEM observations
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