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2002  Volume 34 

Properties and Microstructure of Silicon Carbide (SiC) Cemented Sintered by Hot Isostatic Pressing (HIP) Treatment
Mitsuyoshi NAGANO, Yasuhide MORI, Shigeya SAKAGUCHI, Kouichi NIIHARA, Takahumi KUSUNOSE
Key words silicon carbide, hot isostatic pressing, oxide-sintering aids, densification, flexural strength


It was difficult to density Silicon Carbide (SiC) ceramics enough to achieve the theoretical density due to its low sinterability. In this experiment, SiC ceramics with high strength, nearly theoretical density and pore less microstructure were obtained by adding oxide-sintering aids forming liquid phase at high temperature and carrying out Hot Isostatic Pressing (HIP) sintering after normal sintering. However, the sinterability and microstructure of the SiC ceramics were influenced a great deal by quantity and grain size of sintering aid and density before HIP sintering.
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