(State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China)
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DOI:
10.7502/j.issn.1674-3962.2012.01.05
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Abstract:
The development of leucite based glass ceramics was reviewed from three aspects of fabrication methods, thermal stability and mechanical properties Compared with traditional glass crystallization methods, the sintering method, i e, the leucite crystals were first synthesized and then were sintered with a low soften temperature glass, was more competitive for controlling the size of leucite crystals Leucite content was influenced by firing temperature and time, which further influenced the thermal expansion coefficient (TEC) of glass ceramics, so firing temperature and time must be strictly controlled The leucite crystal diameter in glass ceramic should be less than 4 μm, which can minimize microcracking in glass ceramics The leucite glass ceramic fabricated by the authors crystallized completely after annealed at 950 ℃ for 60 min and the leucite crystal size of the glassceramic was about 1 μm