Abstract:The liquid-phase sintering method was used to prepare a glass lens forming core composed of SiC-Al 2 O 3 -Y 2 O 3 . Spark plasma sintering was used to obtain dense sintered bodies. The sintering characteristics of different SiC sources and compositions of additives were studied. Results revealed that, owing to its initial larger surface area, α-SiC offers sinterability that is superior to that of β-SiC. A maximum density of 3.32 g/cm 3 (theoretical density [TD] of 99.7%) was obtained in α-SiC-10 wt% (6Al 2 O 3… Show more
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