1-2B23 窒化珪素セラミックスの R-曲線挙動
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概要
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The R-curve behavior of a silicon nitride ceramic with well-developed needle-like microstructure is discussed, in which the effects of the test specimen geometry and the crack size on the observed R-curves are mainly addressed. The R-curve behavior is dictated by grain bridging which develops along the crack face behind the propagating crack-tip. It is emphasized that the R-curve is not a charactristic material behavior, and strongly dependent on the crack size and its geometry.
- 1992-10-14
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