Nano Archive

In-situ Observation of Fracture Behavior on Nano Structure in NITE SiC/SiC Composite by HVEM

Shibayama, Tamaki and Matsuo, Genichiro and Hamada, Kouichi and Watanabe, Seiichi and Kishimoto, Hirotatsu (2011) In-situ Observation of Fracture Behavior on Nano Structure in NITE SiC/SiC Composite by HVEM. IOP Conference Series: Materials Science and Engineering, 18 (16). p. 162013.

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Official URL: http://stacks.iop.org/1757-899X/18/i=16/a=162013

Abstract

We have been successfully done in situ observation on the sequence of fracture event at the interface of NITE SiC/SiC composite examined by using miniaturized double notched shear specimen for TEM prepared by Focused Ion Beam method. In this study, we used nano-mechanics TEM experimental apparatus to investigate not only microstructure evolution and but also load and displacement curve at once in High Voltage Electron Microscope. Our results summarize as follows. Cracks were initiated at the interface between carbon coating layer on the SiC fiber and SiC matrices, and propagated along the interface. Load drop in the load and displacement curve during in-situ TEM was clearly observed at the crack initiation. The shear strength by using the miniaturized specimen is about ten times higher than that obtained by the standard testing.

Item Type:Article
ID Code:11123
Deposited By:Prof. Alexey Ivanov
Deposited On:01 Nov 2011 23:22
Last Modified:02 Nov 2011 00:47

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