Journal of the Ceramic Society of Japan
Online ISSN : 1882-1022
Print ISSN : 0914-5400
ISSN-L : 0914-5400
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High Temperature Mechanical Properties of Partially Sinter-Forged Porous Anisotropic Silicon Nitride
Naoki KONDOYoshiaki INAGAKIJian-Feng YANGTatsuki OHJI
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2003 Volume 111 Issue 1292 Pages 285-287

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Abstract
Mechanical properties of porous anisotropic silicon nitrides, fabricated by a partial sinter-forging technique, were investigated in the temperature range from room temperature (R.T.) to 1400°C. The fabricated specimens, with porosity of about 24%, exhibited a relatively high strength as well as a high fracture energy. These good properties were maintained even at temperatures as high as 1300°C. This achievement of good properties is very likely due to the combined effects of grain alignment, presence of pores between grains and yttria sintering aid refractoriness.
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© 2003 The Ceramic Society of Japan
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